A machine too used for production of The diameter of a circle coinciding with An alloy of copper and zinc

flat surfaces or pieces too large or too the top of the teeth of an internal gear a. chromium
heavy to hold in a shaper: a. Pitch diameter b. bronze
a. Tool grinder b. Root diameter c. brass
b. Shaper c. Internal diameter d. aluminum
c. Planer d. Central diameter A welding operation in which a non-
d. Power saw The total depth of a tooth space, equal ferrous filler metal melts at a
A machine tool used in the production to addendum plus dedendum temperature below that of the metal
of flat surfaces on pieces too large or a. Full depth joined but is heated above 450 oC
too heavy or, perhaps too awkward to b. Working depth a. Brazing
hold in a shaper c. Whole depth b. Spot welding
a. Shaper d. Dedendum c. Gas welding
b. Planer A machine tool in which abrasive d. Projection welding
c. Tool grinder wheel is used as cutting tool to obtain The operation of cooling a heated
d. Power saw a very smooth finish piece of work rapid by dipping it in
The portion of the gear tooth space a. Drill water, brine or oil
that is cut below the pitch circle and is b. Grinder a. Tempering
equal to the addendum plus the c. Planer b. Annealing
clearance d. Shaper c. Quenching
a. Top root It is used principally to machine flat or d. Normalizing
b. Dedendum plane surfaces with a single-point tool A machine tool used to measure flat
c. Addendum a. Drill surfaces
d. Top land b. Shaper a. shaper
The operating of cooling a heated piece c. Planer b. planer
of work rapidly by dipping it in water, d. Tool grinder c. grinder
brine or oil Cutting a hole by means of rotating d. lathe
a. quenching tool of the work may revolve and to the Heating above transformation range
b. tempering tool remain fixed as in the lathe usually, 1300 oF to 1350 oF, and cooling
c. normalizing a. Piercing slowly to soften the metal and increase
d. annealing b. Notching in machining
The total permissible variation in the c. Boring a. Annealing
size of a dimension; the difference d. Perforating b. Hardening
between the limits of size The moment of inertia of a rectangle c. Normalizing
a. allowance whose base is “b” and height “h” d. Tempering
b. tolerance about its base is : Heating above the transformation
c. variance a. bh3/12 temperature and quenching usually in
d. interface b. bh/36 oil, for the purpose of increasing the
A machine tool which is very similar to c. bh3/3 hardness:
a shaper except that the ram d. bh2/4 a. Annealing
reciprocates vertically rather than One of the following is not a common b. Hardening
horizontally term relating to the classification of fits c. Normalizing
a. lathe a. Tunking d. Tempering
b. grinder b. Snug The process of forming metal parts by
c. planer c. Medium force fit the use of a powerful pressure from a
d. slotter d. Bound hammer or press to obtain the desired
A tool which when pressed into a Hearingbone gears are gears which: shape, after the metal has been heated
finished hole in a piece of work, a. Do not operate on parallel shaft to its plastic range
provides centers on which the piece b. Have a line of contact between a. rolling
may be turned or otherwise machined the teeth b. forging
a. Mash c. Consist of two left handed c. turning
b. Butt helical gears d. casting
c. Mandrel d. Tend to produce thrust on the A machine tool used to form metal
d. Wobble shafts parts by removing metal from a
Fusion process in which the metal is Internal stresses existing in a welded workplace by the use of a revolving
heated into a state of fusion permitting connection: cutter with many teeth each tooth
it to flow together into a solid joint a. Are not relieved when the weld having a cutting edge which removes
a. Electric arc welding is peened its share of the stock
b. Gas welding b. Are not relieved by heat a. Drilling machine
c. Spot welding treatment b. Boring machine
d. Projection welding c. Maybe relieved when the weld is c. Milling machine
A hand tool used to measure tension peened d. Broaching machine
on bolts d. Are relieved by x-ray analysis A machine too used to finish internal or
a. Indexer In general the design stress and factor external surfaces, such as holes or
b. Torque wrench of safety are related as follows: keyways by the use of cutter called a
c. Torsionmeter a. Design stress = ultimate stress broach, which has a series of cutting
d. Tensiometer times factor of safety edges or teeth
A hand tool used to measure engine b. Design stress = ultimate stress a. Drilling machine
crank web deflection divided by factor of safety b. Boring machine
a. Distortion gage c. Design stress = design stress c. Milling machine
b. Feeler gage divided by ultimate stress d. Broaching machine
c. Line center gage d. Design stress = factor of safety Used to true and align machine tools,
d. Deflection gage divided by design stress fixtures, and works, to test and inspect
The gear with teeth on the outer A group of thin steel strips for the size trueness of finished work, and
cylindrical surface measuring clearances to compare measurement either
a. Outer gear a. Depth gage heights or depths or many other
b. External gear b. Feeler gage measurements
c. Spiral gear c. Lay-out gage a. Dial gauge
d. Helical gear d. Clearance gage b. Dial indicator
c. Tachometer
 d. Speedometer The depth of tooth space below the c. Lathe machine
A manganese steel containing pitch circle d. Boring machine
approximately 0.20% carbon a. Dedendum A gripping device with two or more
a. SAE 1320 b. Working depth adjustable jaws set radially
b. SAE 1230 c. Full depth a. chuck
c. SAE 2340 d. Tooth depth b. carriage
d. SAE 4230 The uniform heating of steel above the c. tailstock
A type of bolt intended for use in usual hardening temperatures, d. fan
bolting wooden parts together or wood followed by cooling freely in air Joining metal by means of high current
to metal. It has a short portion of shank a. annealing at low voltage. During the passage of
just underneath a round head, which is b. normalizing current, pressure by the electrodes
designed to keep the bolt from turning c. hardening produces of forge weld
in the wood when the nut is tightened d. tempering a. Spot welding
a. U-bolt The process of checking or producing b. Resistance welding
b. Carriage bolt checkers on the surface of a piece by c. Steam welding
c. Eye bolt rolling checkered depressions into the d. Gas weldin
d. Stud bolt surface A machine tool used for producing
A machine tool used to enlarge a hole a. knurling holes in metal by the use of a cutting
by means of an adjustable cutting tool b. hamming tool called drill
with only one cutting edge c. breading a. Drilling machine
a. Drilling machine d. embossing b. Boring machine
b. Boring machine A metal turning machine tool in which c. Milling machine
c. Milling machine the work, while revolving on a d. Broaching machine
d. Broaching machine horizontal axis, is acted upon by a An alloy copper and tin
A kind of gears used for heavy duty cutting tool which is made to move a. brass
works where a large ratio of speed is slowly (feed) in a direction more or less b. bronze
required and are extensively used in parallel to the axis of the work c. iron
speed reducers (longitudinal feed) d. tin
a. Bevel gears a. Milling machine A circle coinciding with a tangent to the
b. Worm gears b. Broaching machine bottom of the tooth space
c. Helical gears c. Lathe machine a. Root circle
d. Spiral gears d. Boring machine b. Pitch circle
When meshed gear, it is used to Galvanized iron is a term referring to c. Addendum circle
change rotary motion to reciprocating iron coated with : d. Dedendum circle
motion a. Tin The process of heating a piece of steel
a. Gear shaft b. Zinc to a temperature within or above
b. Gear tooth c. Magnesium critical range and cooling rapidly
c. Gear rack d. Aluminum a. Normalizing
d. Gear motor The permissible variation in the size of b. Hardening
The distance form the center of one a dimension the difference between c. Annealing
tooth of a gear to the center of the next the limits of size d. Tempering
consecutive tooth measured on the a. Allowance A set of gages consisting of thin strips
pitch b. Variance of metal of various thickness mounted
a. Circular pitch c. Clearance in a steel case or holder and is widely
b. Module d. Tolerance used for measuring and checking
c. Diametral pitch A machine tool used to sharpen or clearance
d. Pitch circle shape tools by using an abrasive wheel a. Feeler gage
A material that can wear away a a. Tool grinder b. Depth gage
substance softer than itself b. Shaper c. Line center gage
a. phenol c. Planer d. Lay-out gage
b. abrasive d. Power saw An alloy of copper, tin and small
c. tungsten The operation of making a cone- amount of phosphorus
d. chromium shaped enlargement of the end of a a. chromium
Steel ball for ball bearings are hole, as for a recess for a flat head b. bronze
manufactured by: screw c. brass
a. Turning a. countersinking d. aluminum
b. Rolling b. knurling One of the following is not a tap used
c. Casting c. squaring for cutting threads in holes
d. Cold heading d. perforating a. Tapping tap
A machine tool used principally to A stainless steel is obtained principally b. Plug tap
machine flat or plane surfaces with by the use of the following alloying c. Taper tap
single-point cutting tool element d. Bottoming tap
a. Grinder a. chromium An index or dividing head
b. Shaper b. tungsten a. A part of a drill press
c. Planer c. carbon b. Used to rotate the work
d. Turret lathe d. phenol c. Not use to cut helixes
Uniting two process of metal by means A kind of bolts which has no head an d. Always manually operated
of a different metal which is applied instead has threads on both ends A machine tool used to cut metals part
between the two in molten state a. Stud bolts of light, medium, and large sections
a. Casting b. Acme threaded bolts using a reciprocating hacksaw blade
b. Welding c. Square threaded bolts a. Tool grinder
c. Soldering d. Hex bolts b. Shaper
d. Brazing A machine tool in which metal is c. Planer
The portion of a gear tooth that removed by means of a revolving cutter d. Power saw
projects above outside the pitch circle with many teeth, each tooth having a The of gear teeth to each mm pitch
a. Top relief cutting edge which removes its share diameter
b. Dedendum of the stock a. Diametral pitch
c. Addendum a. Milling machine b. Module
d. Tooth space b. Broaching machine c. Circular pitch
 d. English module A group of thin steel strips for Welding operation in which a non-
Heating to a subcritical temperature, measuring clearances ferrous filler metal melts at a
about 1,100 oF to 1300 oF and holding a. Distortion gage temperature below that of the metal
at a temperature for a suitable time for b. Feeler gage joined but is heated above 450 oC
the purpose of reducing internal c. Line center gage a. Gas welding
residual stresses d. Deflection gage b. Spot welding
a. Annealing A kind of gears used to transmit motion c. Brazing
b. Hardening from one shaft to another shaft at an d. Steam welding
c. Normalizing angle to the first The ability of metal to be deformed
d. Stress relieving a. Bevel gears considerably without rupture
A kind of chuck which should not be b. Worm gears a. ductility
used where extreme accuracy is c. Helical gears b. plasticity
required d. Spiral gears c. malleability
a. Collet chuck A machine tool used to machine flat or d. elasticity
b. Magnetic chuck plane surface with a single point A tool used in measuring diameters
c. Four jaw chuck cutting tool a. caliper
d. Universal chuck a. Tool grinder b. nanometer
Heating to some 100 oF above the b. Shaper c. tachometer
transformation range with subsequent c. Planer d. pyrometer
cooling to below that range still air at d. Power saw The operation of machining the end of
room temperature to produce uniform Reheating to a temperature below the a workpiece to make the end square
structure of the metal transformation range, followed by any with the axis
a. Annealing desired rate of cooling to attain the a. squaring
b. Hardening desired properties of the metal b. buffing
c. Normalizing a. Annealing c. lapping
d. Tempering b. Hardening d. honing
A method used in softening a piece of c. Normalizing The number of teeth per inch of pitch
metal that is too hard to machine and d. Stress relieving diameter and which gives some
is done by heating steel slowly above A mechanism which usually do the indications of the size of the gear teeth
the usual hardening temperature, indexing in a machine tool a. Module
keeping it at the heat for ½ to 2 hours, a. Slotter b. Pitch circle
then cooling slowly, preferably in a b. Chuck c. Diametral pitch
furnace c. Dividing head d. Circular pitch
a. broaching d. Indexer It consists of shaping a piece by
b. quenching The operation of enlarging a hole by bringing it into contact with a rotating
c. normalizing means of an adjustable cutting tool abrasive wheel
d. annealing with only one cutting edge a. drilling
The process of working metals by the a. Drilling b. boring
application of sudden blows or y b. Broaching c. grinding
steady pressure c. Milling d. broaching
a. welding d. Boring An imaginary circle passing through
b. extursion In a lathe, it comprises the main the points at which the teeth of the
c. forging spindle, the necessary mechanism for meshing gears contact each other
d. swaging obtaining the various spindle speed a. Pitch circle
A device for accurately measuring and also certain gears which are used b. Addendum circle
diameters to operate the quick change gear c. Dedendum circle
a. Radiometer mechanism d. Base circle
b. Profilometer a. Headstock The material used in high speed
c. Spectrometer b. Carriage processes
d. Micrometer c. Tailstock a. High speed metal
It is used to produce a variety of d. Fan b. Chromium
surface by using a circular-type cutter A cylindrical bar of steel with threads c. Cast iron
with multiple teeth formed around it and grooves or flutes d. Carbon steel
a. Grinding machine running lengthwise in it, intersecting The clearance between the tooth
b. Shaper with the threads to form cutting edges. profiles of a gear tooth
c. Drilling machine It is used to act internal threads a. Toothspace
d. Milling machine a. groove b. backlash
An operation of sizing and finishing a b. lap c. flank
hole by means of a cutting tool having c. tap d. width
several cutting edges d. flute A hand tool used to measure tension
a. notching Addendum of a cycloid gear tooth is: on bolts
b. piercing a. Cycloid a. Indexer
c. turning b. Epicycloid b. Torsiometer
d. reaming c. Straight rack c. Torque wrench
A material that can wear away a d. Involute d. Tensiometer
substance softer than itself An alloy of copper and zinc The process of forming metal parts by
a. abrasive a. brass the use of dies after the metal is
b. corrosive b. bronze heated to its plastic range
c. tungsten c. iron a. rolling
d. alloy d. tin b. forging
In usual spur gearing The shop term used to include the c. turning
a. The pitch circle and the base marking or inscribing of center points, d. casting
circle are the same circles, arcs, r straight lines upon A kind of chuck which has reversible
b. Working depth incudes the metal surfaces, either curved or flat, jaws which could be adjusted
clearance for the guidance of the worker separately
c. Tooth outline are usually a. Shaping a. Collet chuck
involute curves b. Hobbing b. Independent chuck
d. Tooth outline are always c. Laying out c. Four jaw chuck
cycloidal curves d. Shaping d. Two jaw chuck
It fits to the main spindle of a lathe and The range of motor power in kW of a A group of thin steel strip used for
is so called because it acts as a universal milling machine, max feed measuring clearances
bearing surface on which the work movement 1270 mm lengthwise, 355 a. Feeler gage
rests. It revolves with the work. When mm lateral, 508 mm vertical is: b. Tachometer
compared with the hardness of the a. 11 to 15 kW c. Micrometer
dead center in the tailstock, it is b. 16 to 21 kW d. Caliper
usually soft, and is so made since it
c. 7.5 to 10 kW A hand tool used to measure tension in
does no work.
d. 22 to 30 kW bolts
a. Ram center
b. Spindle center The motor power in kW of a punch a. Torque wrench
c. Live center press, 50.8 mm hole diameter, 25.4 b. Tachometer
d. Bearing center mm thickness, for soft steel is: c. Shaver
The operation of cooling a heated piece a. 15 kW d. Tensor
of work rapidly by dropping it in water, b. 21 kW Ratio of pitch diameter to the number
brine or oil. c. 7.5 kW of teeth
a. Normalizing d. 30 kW a. Diametral pitch
b. Quenching The motor power in kW of a forming or b. Module
c. Annealing bending machine 1600 mm width, 508 c. Contact ratio
d. Squeezing mm head movement is : d. Helical overlap
The total permissible variation in the a. 7.5 kW A machine tool which is made to move
size of a dimension, the difference b. 11 kW slowly while acting on the work which
between the limits of the size. c. 15 kW is revolving on a horizontal axis
a. Deformation d. 22 kW a. Lathe machine
b. Variance The range of motor power in kW of a b. Broaching machine
c. Tolerance Engine lathe machine, average service c. Planer
d. Allowance 1000 mm to 1300 mm swing. d. Shaper
An alloy of copper and zinc. a. 11 to 15 kW A machine tool used to finish internal
a. Aluminum b. 16 to 21 kW and external surfaces by the use of a
b. Bronze c. 7.5 to 10 kW cutter called a broach, which has a
c. Brass d. 22 to 30 kW series of cutting edges or teeth
d. Nickel The ability of metal to withstand forces a. Lathe machine
The maximum stress induced in a thus following a number of twist. b. Broaching machine
material when subjected to alternate a. Shear strength c. Planer
or repeated loading without causing b. Bearing strength d. Shaper
failure. c. Endurance limit Used to machine flat or curved
a. Yield point d. Deformation surfaces with a tool which moves in a
b. Ultimate point A total deformation measured in the reciprocating motion
c. Endurance limit direction of the line of stress. a. Planer
d. Proportional limit a. strain b. Shaper
Of the following metals, which will b. elasticity c. Grinder
respond to heat treatment? c. elongation d. Lathe
a. Cast iron d. contraction Which of the following materials that
b. Wrought iron A metallic element of copper – tin alloy. can wear away a substance softer than
c. Medium iron a. aluminum itself
d. Low carbon iron b. brass a. Abrasive
A machine tool in which an abrasive c. bronze b. Tungsten
wheel is used as a cutting tool to d. chromium c. Carbon
obtain a very high degree of accuracy d. Corrosive
and a smooth finish on metal parts, A metallic element and only metal that A machine tool in which an abrasive
including soft and hardened steel. is liquid at ordinary temperature. wheel is used as a cutting tool to
a. Grinding machine a. aluminum obtain a very smooth finish.
b. Broaching machine b. mercury a. Planer
c. Milling machine c. zirconium b. Shaper
d. Boring machine d. zinc c. Power saw
The maximum stress to which a The ability of metal to withstand loads d. Grinder
material can be subjected without a without breaking down It is used to produce a variety of
trace of any permanent set remaining a. Strength surface by using a circular type cutter
upon a complete withdrawal of the b. Elasticity with multiple teeth.
stress. c. Rigidity a. Milling machine
a. Ultimate stress d. Deformation b. Broaching machine
b. Rupture stress An alloying element used principally to c. Beading machine
c. Elastic limit produce stainless steel d. Hemming machine
d. Proportional limit a. aluminum The softening of metals by heat
Which of the following metals is easy b. brass treatment and most commonly
to chisel? c. bronze consists of heating the metals up to
a. Alloy steel d. chromium near molten state and then cooling
b. Stainless steel A coating material used to produce them very slowly.
c. Manganese steel galvanized iron a. Quenching
d. Cast iron steel a. zirconium b. Tempering
b. zinc c. Annealing
c. aluminum d. Forming
d. chromium
The common deoxidizer and cleanser A machine tool used principally to Which of the following is not a
of steel, forming oxides and sulfates, machine flat or place surfaces with a classification of iron one?
that are carried off in the slag. single point cutting tool. a. Hematite
a. Manganese a. Shaper b. Magnetite
b. Carbon b. Planer c. Sulfurite
c. Tungsten c. Grinder d. Siderite
d. Sulfur d. Broaching machine Fluid film desired between two
A device used to prevent leakage of Which of the following is not a part of surfaces having relatively sliding
media. lathe machine? motion
a. Seal a. tailstock a. Lube oil
b. Packings b. headstock b. Graphite
c. Teflon c. carriage c. Packing
d. Graphite d. fan d. Lubrication
A total resistance that a material offers A metallic element and the only metal A tool used for measuring diameters.
to an applied load. that is liquid at ordinary temperature. a. Micrometer
a. Flexure a. Austenite b. Tachometer
b. Stress b. Mercury c. Pyrometer
c. Elasticity c. Manganese d. Caliper
d. Rigidity d. Martensite The total deformation measured in the
The maximum stress induced in a A property of material which relates the direction of the line of stress.
material when subjected to alternating lateral strain to the longitudinal strain. a. Axial deformation
or repeated loading without causing a. stress b. Elongation
failure. b. Modulus of Elasticity c. Strain
a. Elastic limit c. Poisson’s ratio d. Unit stress
b. Proportional limit d. Deformation A kind of gear used to transmit motion
c. Rupture strength The maximum stress to which a from one shaft to another shaft at an
d. Endurance limit material may be subjected before angle to the first.
The ability of metal to withstand loads failure occurs. a. Worm gear
without breaking down is: a. Rupture stress b. Spiral gear
a. Stress b. Yield stress c. Helical gear
b. Strength c. Ultimate stress d. Bevel gear
c. Strain d. Allowable stress Ferrous metals contain relatively large
d. Elasticity The total deformation measured in the amount of :
A fine grained, salty silica rock used for direction of the line of stress. a. Carbon
sharpening edge tools. a. Stress b. Manganese
a. Eutectoid b. Strain c. Phosphorous
b. Austenite c. Endurance limit d. Sulfur
c. Olistone d. Poisson’s ratio The minimum thickness of steel
d. Pearlite The maximum stress to which a members exposed to weather and
A tool with hardened points used for material can be subjected without a accessible for painting is:
scribing circles or laying of distances. trace of any permanent set remaining a. 6 mm
a. Trammel upon a complete withdrawal of the b. 8 mm
b. Caliper stress. c. 4 mm
c. Divider a. Ultimate limit d. 10 mm
d. Micrometer b. Proportional limit A welding operation in which a non-
Usually a copper-tin alloy is: c. Endurance limit ferrous filter metal melts at a
a. Aluminum d. Elastic limit temperature below that of the metal
b. Nickel The maximum stress induced in joined but is heated above 450 oC.
c. Brass material when subjected to alternating a. Arc welding
d. Bronze or repeated loading without causing b. Brazing
Any material that retard the flow of failure. c. Spot welding
electricity used to prevent passage or a. Ultimate strength d. Butt welding
escape of electric current from b. Yield strength A machine which can flatten surfaces
conductors. c. Endurance limit on a horizontal, vertical or angular
a. Insulators d. Rupture strength plane.
b. Bricks The range of motor power in kW of a a. Shaper
c. Ceramics cylindrical grinding machine 600 x 50 b. Planer
d. Refractories mm wheel size, 2,400 to 4,200 mm c. Power saw
The process of working metals by the center distance is: d. Tool grinder
application sudden blows or by a a. 11 to 15 kW A machining operation whereby the
steady pressure. b. 16 to 21 kW tool rotates while the feed is stationary.
a. Rolling c. 7.5 kW a. shaping
b. Forging d. 22 to 30 kW b. milling
c. Casting A highly transparent and exceedingly c. turning
d. Turning hard crystalline stone of almost pure d. reaming
The area of a machine shop where carbon. The operation of cooling heated piece
metal is being melted to form a new a. Gold of work rapidly by dropping it in water,
shape is : b. Diamond brine or oil.
a. Welding area c. Bronze a. Quenching
b. Mass production area d. Crystalline b. Tempering
c. Foundry area c. Annealing
d. Tool and die d. Normalizing
A machine tool used to produce a c. Fatigue strength The ability of material or metal to resist
variety of surface by using a circular d. Torsional strength being crushed is:
type cutter with multiple teeth An alloy of copper and zinc a. Compressive strength
a. Lathe machine a. aluminum b. Fatigue strength
b. Milling machine b. brass c. Torsional strength
c. Broaching machine c. bronze d. Bending strength
d. Grinding machine d. chromium A welding operation in which a non-
Any material that retard the flow of A kind of gear used to transmit motion ferrous filler metal melts at a
electricity, used to prevent passage or from one shaft to another shaft at an temperature below that of the metal
escape of electric current from angle to the first. joined but is heated above 450 oC.
conductors. a. Spiral gear a. Spot welding
a. refractory b. Worm gear b. Gas welding
b. ceramics c. Helical gear c. Brazing
c. Coating material d. Bevel gear d. Arc welding
d. insulator A circle coinciding with a tangent to the A machine used in shaping metal by
The maximum stress to which a bottom of the tooth spaces. means of abrasive wheel or removal of
material may be subjected before a. Pitch circle metals with an abrasive is called :
failure occurs. b. Root circle a. Planer
a. Rupture strength c. Base circle b. Power saw
b. Ultimate strength d. Outside circle c. Shaper
c. Yield strength Materials, usually ceramics, employed d. Grinding machine
d. Proportional limit where resistance to very high The process of working metals by the
An amorphous solid made by fusing temperature is required, as for furnace application of sudden blows or by a
silica with a basic oxide. lining and metal melting pots steady pressure.
a. Pearlite a. Insulators a. Trimming
b. Rock b. Gaskets b. Welding
c. Silicon c. Packings c. Forging
d. Glass d. Refractories d. Lancing
A total resistance that a material offers Which of the following is not a kind of A kind of gear used for heavy duty
to an applied load. mandrel? works where a large ratio of speed is
a. Friction force a. Expansion mandrel required and are extensively used in
b. Stress b. Contraction mandrel speed reducers.
c. Rigidity c. Taper mandrel a. Spiral gear
d. Compressive force d. Gang mandrel b. Bevel gear
A kind of gear used for heavy duty Name of mechanism which a welding c. Worm gear
works where a large ratio of speed is operator holds during gas welding and d. Helical gear
required and are extensively used in at the end of which the gases are A machining operation whereby the
speed reducers. burned to perform the various gas tool reciprocates and the feed is
a. Helical gear welding. stationary.
b. Worm gear a. Mash a. Reaming
c. Bevel gear b. Core b. Planing
d. Spiral gear c. Wobble c. Shaping
Fluid film desired between two d. Torch d. Turning
surfaces having relative sliding motion. A soft yellow metal, known since A property of material which relates the
a. Lubrication ancient times a precious metal which lateral strains to the longitudinal strain.
b. Seal all material values are based. a. Rigidity
c. Packing a. Solidus b. Elasticity
d. Safety shield b. Bronze c. Poisson’s ratio
c. Gold d. Deflection
A kind of gear used to transmit motion d. Austenite Flexible material used to seal
from one shaft to another shaft at A heavy rotating body which serves as pressurized fluids, normally under
angle to the first. reservoir for absorbing and dynamic conditions.
a. Helical gear redistributing kinetic energy. a. Packings
b. Worm gear a. Shaft b. Teflon
c. Bevel gear b. Governor c. Seals
d. Spiral gear c. Flywheel d. Safety shield
Which of the is not a classification of d. Puncher Materials, usually ceramics, employed
iron ore? The process of producing a variety of where resistance to very high
a. Hematite surfaces by using a circular type cutter temperature is requires, as for furnace
b. Magnetite with multiple teeth. linings and metal melting pots.
c. Sulfurite a. Milling a. Refractories
d. Siderite b. Drilling b. Gaskets
Used in the production of flat surfaces c. Broaching c. Insulators
on piece too large or too heavy to hold d. Boring d. Safety shield
in a shaper Which of the following metals will A machining operation whereby the
a. Planer respond to heat treatment? tool reciprocated and the feed is
b. Shaper a. Cast iron stationary is called:
c. Grinder b. Medium carbon steel a. Shaping
d. Shaver c. Wrought steel b. Reaming
Which of the following is not a strength d. Low carbon steel c. Planning
property of metals ? d. Turning
a. Tensile strength
b. Rocking strength
Fluid film desired between two b. Brittleness In flange coupling the weakest element
surfaces having relative sliding motion. c. Plasticity should be:
a. Lube oil d. Creep a. Flange
b. Lubrication The ability of metal to stretch, bend or b. Key
c. Graphite twist without breaking or cracking. c. Bolts
d. Grease a. Elasticity d. Shaft
Which of the following is a non- b. Ductility A flange coupling is:
magnetic ? c. Brittleness a. Used for collinear shaft
a. Cast iron d. Plasticity b. Used for non-collinear shafts
b. Alloy steel The property of steel which resist c. Rigid coupling
c. Cast steel indention or penetration. d. Flexible
d. Manganese steel a. Hardness Splines are used when:
The method of cold working by b. Elasticity a. The power transmitted is low
compression c. Ductility b. The power to be transmitted is
a. Broaching d. None of these high
b. Lapping For high speed application the c. Axial relative motion between
c. Piercing minimum number of teeth in small shafts and hub is necessary
d. Reaming sprocket should be: d. Flame hardening
The softening of metals by heat a. 18 to 24 The process commonly used for
treatment and most commonly b. 26 to 30 thermo-plastic material is:
consists of heating the metals up to c. 14 to 18 a. Diecasting
near molten state and then cooling d. 24 to 28 b. Injection moulding
them very slowly. The crest diameter of a screw thread is c. Shell moulding
a. Annealing same as: d. Cold forming
b. Hardening a. Pitch diameter Select the one that has highest specific
c. Normalizing b. Minor diameter gravity?
d. Tempering c. Major diameter a. Aluminum
A circle the radius if which is equal to d. Base diameter b. Lead
the distance from the gear axis to the A babbitt is: c. Brass
pitch point a. A cutectic of iron and iron d. High carbon steel
a. Pitch circle phosphide Age-hardening is related with:
b. Root circle b. A gadget for measuring volume a. Cast iron
c. Base circle c. A measure of magnetic induction b. Stainless steel
d. Outside circle produces in a material c. Duralumin
The process of producing a variety of d. Antimony bearing lead or tin d. German silver
surfaces by using a circular type cutter alloy Foundry crucible is made of:
with multiple teeth. Type of bolt commonly used in the a. German silver
a. Piercing construction that is threaded in both b. Lead
b. Cutting ends. c. Mild steel
c. Embossing a. Hex bolt d. Graphite
d. Milling b. Stud bolt Trimming is a process associated with:
The total permissible variation in the c. Square threaded bolt a. Forging
size of a dimension; the difference d. Eye bolt b. Machining of metals
between the limits of the size. Cast iron flywheels are commonly c. Electroplating
a. Tolerance designed with factor of safety of: d. Press work
b. Fits a. 9 to 12 Choose the one that will have highest
c. Allowance b. 8 to 11 cutting speed.
d. Clearance c. 10 to 13 a. Aluminum
A kind of gear used for heavy duty d. 7 to 10 b. Brass
works where a large ratio of speed is Spiral gears are suitable for c. Bronze
required and are extensively used in transmitting: d. Cast iron
speed reducers. a. Any power Dilatometer is used to find out which
a. Worm gear b. Small power property of molding sand.
b. Spiral gear c. Huge power a. Permeability
c. Helical gear d. Pulsating power b. Hot strength
d. Bevel gear The type of cam used for low and c. Fineness
Which of the following is not a part of moderate speed engines is generally: d. Moisture content
lathe machine? a. Flat Hastalloy contains:
a. tailstock b. Involute a. Copper
b. fan c. Tangent b. Nickel and copper
c. carriage d. Harmonic c. Copper and aluminum
d. headstock The rated life of a bearing changes: d. Nickel and molybdenum
Which process does not belong to the a. Inversely as cube of load The maximum hardenability of any
group? b. Directly as load steel depends on:
a. Vise grip c. Inversely as square of load a. The carbon content
b. Adjustable wrench d. Inversely as load b. The chemical composition
c. Torque wrench Belt slip may take place because of: c. The grain size
d. Feeler gage a. Loose load d. The alloying elements present
The ability of the material to return to b. Heavy belt A tool with hardened steel points used
its original shape after being elongated c. Driving pulley too small for scribing or laying of distances.
or distorted when the forces are d. All of the above a. Plain scriber
released. b. Divider
a. Elasticity c. A Trammel
 d. hermaphrodite The color for a pipeline of electricity in The ability of a moving body to perform
A machine tool used principally to the color coding of pipe is: work.
machine flat or plane surfaces with a a. Light orange a. Internal energy
single pointed tool. b. White b. Potential energy
a. Shaper c. Silver grey c. Kinetic energy
b. Planer d. Light blue d. Flow work
c. Drill The most important element that
d. Power saw The maximum size of the fillet weld controls the physical properties of
Which of the following is not used to that can be made in single pass is: steel is:
temper steel? a. 3mm a. Carbon
a. Brine b. 6mm b. Silicon
b. Oil bath c. 7mm c. Manganese
c. Water bath d. 4mm d. Tungsten
d. Steam bath The good deoxidizer in steel melting is: In majority of machine members, the
Fluid film desired between surfaces a. Manganese damping capacity of the material
relative sliding motion. b. Aluminum should be:
a. Lube oil c. Silicon a. Zero
b. Lubrication d. All of these b. High
c. Grease Tools usually used in woof pattern c. Low
d. Graphite making in foundry shop. d. Anything
Which of the following is easy to a. Band saw The kind of center which is being
chisel? b. Saws and chisels attached and meshed to the tailstock
a. Cast iron c. Knives and drills spindle which is also static while the
b. Alloy steel d. Grinder work is rotating.
c. Cast steel The deformation that results from a a. Dead center
d. Manganese steel stress and is expressed in terms of the b. Live center
A device that measures atmospheric amount deformation per inch. c. Focal center
pressure. a. Elongation d. Work center
a. Piezometer b. Strain Zero axial thrust is experienced in:
b. Hydrometer c. Poisson’s ratio a. Herringbone gears
c. Barometer d. Elasticity b. Helical gears
d. Odometer The best material for brake drum is: c. Bevel gears
Which of the following is not a kind of a. Cast iron d. Worm gears
cast iron? b. Steel The minimum thickness of steel
a. Malleable iron c. Aluminum members exposed to weather and
b. Head iron d. Wrought iron accessible for painting is:
c. Gray iron The ability of a material to resist being a. 4mm
d. White iron crushed. b. 6mm
Material, usually ceramics, employed a. Tensile strength c. 8mm
where resistance to very high b. Shearing strength d. 10mm
temperature is required as for furnace c. Compressive strength The softening of metal by heat
linings and metal melting pots. d. Torsion treatment and most commonly consist
a. Bricks At quite low temperature(say – 75oC) of heating the metal up to near molten
b. Insulators the notched bar impact value of steel. state and then cooling it very slowly
c. Refractories a. Increases significantly a. annealing
d. Ceramics b. Decreases significantly b. knurling
The principal material used in high c. Remain unchanged c. indexing
production metal working tools. d. Depends on heat treatment d. soldering
a. Hyper – Eutectoid Which of the following is not part of the A machining operation whereby the
b. High speed steel headstock? tool reciprocates and the feed is
c. lead a. Spindle stationary is called :
d. High speed carbon b. Anvil a. shaping
The ratio of stress to strain within the c. Back gear b. reaming
elastic limit. d. Motor c. planning
a. Creep Which one is different from the d. turning
b. Modulus of rigidity remaining? Gears for wrist watches are generally
c. Modulus of elasticity a. Nitriding manufactures by:
d. Poisson’s ratio b. Cyaniding a. Molding
The last point at which a material may c. Electroplating b. Stamping
be stretched and still return to its d. Flame hardening c. Galvanizing
undeformed condition upon release of Which of the type of chain is used in d. Honing
the stress. motorcycles? In general, alloys with high nickel
a. Rupture limit a. Silent content retain toughness to quite low
b. Elastic limit b. Pintle temperature up to:
c. Proportional limit c. Bush roller a. -250oF
d. Ultimate limit d. Long b. -360oF
The internal resistance a material A kind of gear used to transmit motion c. -320oF
offers to being deformed and is from one shaft to another shaft at an d. -240oF
measured in terms of applied load. angle to the first. The color of pipeline of fuel oil in the
a. Strain a. Worm gear color coding of pipe is:
b. Elasticity b. Bevel gear a. Light blue
c. Stress c. Helical gear b. Brown
d. Resilience d. Spur gear c. White
 d. Light orange Rankine formula is valid up to In the color coding of pipe, the color for
Projection welding is: slenderness ratio of: pipeline or communication is:
a. Continuous spot welding a. 60 a. Light blue
process b. 80 b. White
b. Used to make mesh c. 120 c. Brown
c. Multi-spot welding process d. 150 d. Light orange
d. Used to form A special metal formed when two or Muntz metal contains:
Universal coupling is: more metals are melted together. a. Copper-aluminum
a. Used for collinear shafts a. Monel b. Copper-in
b. Used for non-collinear shafts b. Alloy c. Copper-nickel
c. Type of flange coupling c. Solder d. Copper-zinc
d. Rigid coupling d. Hastalloy Which of the following is not a kind of
In power metallurgy the process of In arc welding operations the current mandrel?
heating the cold pressed metal powder value is decided by: a. Expansion mandrel
is called: a. Length of welded portion b. Taper mandrel
a. Deposition b. Voltage across the arc c. Contraction mandrel
b. Granulation c. Size of the electrode d. Foundry mandrel
c. Sintering d. Thickness of plate Subjecting a substance to a high
d. Precipitation Delta iron occurs at temperature of: temperature below the fusion point,
A heavy rotating body which serves as a. Room temperature usually to make it friable.
a reservoir for absorbing and b. Above melting point a. Calcinations
redistributing kinetic energy. c. Between 1400oC & 1535oC b. Fusion
a. flywheel d. Between 1000oC & 1400oC c. Boiling
b. governor Which of the following ropes are more d. Superheating
c. shaft flexible? Manganese steel standard designation
d. puncher a. 6 to 19 is SAE __.
An elastic body whose primary b. 6 to 7 a. 8XXX
function is to deflect under load. c. 8 to 19 b. 10XX
a. Spring d. 6 to 37 c. 12XX
b. Brake The ability of a metal to withstand d. 13XX
c. Stopper forces that cause a member to twist. The mass of the body per unit volume.
d. Clutch a. Shear strength a. Volume flow rate
The process of working metals by the b. Tensile strength b. Density
application of sudden blows or by c. Bearing strength c. Weight
steady pressure. d. Torsional strength d. Mass
a. casting A machine used in shaping metal by Substances having sufficient carbon
b. turning means of an abrasive wheel or the and/or hydrogen for chemical oxidation
c. forging removal of metals with an abrasive is to produce exothermally, worthwhile
d. rolling called : quantities to heat.
For a high corrosion resistant stainless a. Planer machine a. Lubrication
steel, what minimum chromium b. Power saw b. Graphite
content is required? c. Shaper machine c. Grease
a. 8.0% d. Grinding machine d. Fuels
b. 4.5% A machine tool in which an abrasive In the color coding of pipe, the color for
c. 1.5% wheel is used as a cutting tool to a pipeline or air is:
d. 8.5% obtain a very smooth finish. a. Light blue
The operation of cooling a heated piece a. Broaching machine b. Light orange
of work rapidly by dipping it in water, b. Planer c. White
brine or oil. c. Tool Grinder d. Green
a. quenching d. Milling Machine A device used to prevent leakage of
b. annealing In the color coding of pipe, the color for media.
c. tempering pipeline of steam is: a. Packing
d. normalizing a. Light orange b. Safety shield
The property of a material which resist b. White c. Gasket
forces action to pull the material apart. c. Silver grey d. Seals
a. Shear strength d. Light blue Which does not belong to the group?
b. Tensile strength Hardening the surface of iron-based a. Resistance welding
c. Compressive strength alloys by heating them below the b. Soldering
d. Bearing strength melting point in contact with a c. Hardening
Least shrinkage allowance is provided carbonaceous substance. d. Brazing
in the case of which of the following: a. Carburizing Any material that retard the flow of
a. Cast iron b. Normalizing electricity, used to prevent or escape of
b. Aluminum c. Martempering electric current from conductors.
c. White cast iron d. Hardening a. Bricks
d. Brass Steel balls for ball bearings are b. Insulators
In a standard coarse thread bolt, the manufactures by: c. Refractories
stress concentration is maximum at: a. Cold heading d. Ceramics
a. All over the surface b. Casting The phenomenon of weld decay takes
b. Top surface c. Rolling places in:
c. Root d. Turning a. Cast iron
d. Flank b. Brass
c. Bronze
d. Stainless steel
In the color coding of pipe, the color for The imperfection in the crystal How is tubing measured?
a pipeline of water is: structure of metal is: a. Inside diameter
a. Light blue a. Impurity b. Outside diameter
b. Green b. Fracture slip c. Thickness of wall
c. Brown c. Slip d. Wire gage
d. Silver grey d. dislocation Which of the following metals is non-
A plug gauge is used to measure: Which of the following statement(s) is magnetic?
a. Taper bores correct for an oilless bearing: a. Cast iron
b. Cylindrical bores a. The oil film is maintained by b. Alloy Steel
c. Spherical holes supplying oil under pressure c. Cast Steel
d. Screw threads b. The oil film pressure is produced d. Manganese Steel
The area of the machine shop where only by rotation of the journal. A machining operation whereby the
the metal is being melted to form a c. Do not need external supply of tool reciprocates and the feed is
new shape. lubricant stationary.
a. Welding area d. Grease is needed to be applied a. Planing
b. Mass production area after some intervals b. Shaping
c. Foundry area Which of the following statements(s) is c. Turning
d. Tool and die area correct in “carbon steel castings”? d. Reaming
For moderate speed of mating gears, a. The percentage carbon is less Which of the following is not use for
the ideal ratio of contact is than 1.7% cutting threads in holes?
a. 1.35 – 1.55 b. The percentage carbon is a. Tapping tap
b. 1.0 – 1.3 between 1.7% to 2% b. Plug tap
c. 1.25 – 1.45 c. The percentage for alloying c. Taper tap
d. 1.25 – 4.0 elements is controlled d. Bottoming tap
In order to realize the advantage of d. None of the above Herring bone gears are gears which:
fluid friction, it is essential to have: Aluminum alloys for pressure die a. Do not operate on parallel shafts
a. No oil film casting: b. Have a line contract between
b. Converging oil film a. Must not be free from hot the teeth
c. Diverging oil film shortness c. Consists of two left handed
d. Parallel oil film in bearing b. Must have iron as one of the helical gears
Which of the following describes the constituents d. Tend to produce thrust on the
“slip” in belt drive? c. Must not posses considerable shafts
a. Loss in power fluidity Which of the following statements is
b. Difference between the angular d. Must be light true for the internal stresses existing in
velocities of two pulleys Super conductors: a welded connection?
c. Difference between linear speed a. Exit at temperature below 10K a. Internal stresses are not relieved
of the rim b. Are the dense metals without by heat treatment
d. Difference between the linear voids b. Internal stresses are not
speed of the rim of pulley and c. Are non-metallic substances relieved when weld is peened
the belt on it. d. Are the purest forms of metals c. Internal stress may be relieved
Up to what percent thickness of plate, When large number of components are when weld is peened
edge preparation for welding is not turned and parted off form a bar, the d. Internal stresses are relieved by
needed? chuck generally used is: x-ray analysis
a. 2 mm a. Two jaw chuck In usual spur gearing, which of the
b. 4 mm b. Four jaw chuck following statement(s) is correct?
c. 8 mm c. Collet chuck a. Pitch circle and base circle are
d. 12 mm d. Magnetic chuck the same
Piston compression rings are made of If V id the volume of metal in casting b. Working depth includes the
what material? and A is its surface area, then the time clearance
a. Steel of solidification will be proportional to: c. Tooth outline are usually
b. Bronze a. V2 , 1/A involute curves
c. Aluminum b. 1/V2 , A2 d. Tooth outline are usually
d. Cast iron c. V , 1/A2 cycloidal curves
A cold chisel is made of what? d. V2 , 1/A2 Which of the following is the not the
a. Mild steel What tool is used in foundry for other name of circumferential stress
b. German silver repeating the mould? for thin walled cylinders.
c. High carbon steel a. Swab a. Hoop stress
d. Cast iron b. Gagger b. Girth stress
Which of the following cams where the c. Bellows c. Tangential stress
follower reciprocates or oscillates in a d. Rammer d. Longitudinal stress
plane parallel to the axis of rotation? Which of the following does not have to How do you call the ratio of the
a. Cam curves be lubricated when drilling? volumetric stress to volumetric strain?
b. Radial cam a. Brass a. Modulus in shear
c. Cylindrical cam b. Steel b. Stress to strain ratio
d. Tangential cam c. Monel c. Volumetric ratio
How is the material described if it d. Mild steel d. Bulk modulus
recovers its original dimensions when The tool used precision work to Hearing bone gears are gears which:
the load is removed? smooth or enlarge holes is called a: a. Do not operate parallel shafts
a. Elastic a. Round out b. Have a line contact between
b. Plastic b. Drift pin the teeth
c. Brittle c. Reamer c. Tend to produce and thrust on
d. malleable d. Protractor the shafts
 d. Consists of two left handed Clutch slippage while clutch is The melting point of babbitt is
helical gears engaged is especially noticeable: approximately:
The hardness of steel increases if it a. During idling a. 1000°F
contains: b. A low speed b. 650°F
a. Martensite c. During acceleration c. 750°F
b. Pearlite d. During braking d. 500°F
c. Austenite A single ply leather belt running at a Which of the following is maximum in
d. All of the above belt velocity of 300 ft/min likely to 18-4-1 high speed steel?
How do you call a steel with 0.8% transmit per inch of width: a. Tungsten
carbon and 100% pearlite? a. 2.3 Hp b. Chromium
a. Austenite b. 3.0 Hp c. Argon
b. Solidus c. 4.0 Hp d. Iron
c. Hyper-eutectoid d. 5.0 Hp A kinematic chain needs a minimum:
d. Eutectoid Speedometer drive is generally taken a. 2 links and 2 turning pairs
Rope brake dynamometer uses what? form: b. 3 links and turning pairs
a. Oil as lubricant a. Gear box c. 4 links and 4 turning pairs
b. No lubricant b. Fan belt d. 3 links and 2 turning pairs
c. Grease as lubricant c. Fly wheel What is the recommend best cutting
d. Water as lubricant d. Frontwheel angle of the drill for work on steel or
The compression members tend to What is the percentage of carbon in cast iron?
buckle in the direction of: Eutectoid steel? a. 39 degrees
a. Axis of load a. 0.02 % b. 49 degrees
b. Minimum cross-section b. 0.30 % c. 59 degrees
c. Least radius of gyration c. 0.63 % d. 29 degrees
d. Perpendicular to the axis of load d. 0.80 % The ability of metal to withstand tools
Which of the following is the The behavior of metals where in without breaking down is:
orientation of the axes of the two strength of a metal is increased and a. Stress
shafts in cross helical worm? the ductility is decreased on heating at b. Strength
a. Parallel a relatively low temperature after cold c. Strain
b. Non-parallel working is called: d. Elasticity
c. Intersecting a. Clustering The presence of sulphur in pig iron
d. Non-parallel and non- b. Twinning makes:
intersecting c. Screw dislocation a. The casting unsound
The height of tooth above the pitch d. Strain aging b. It brittle
circle or the radial distance between In general, to engage securely and c. It hard
pitch circle and top land of the tooth. prevent dragging, what is the clearance d. It is easy machinable
a. Addendum between release bearing and release In testing a material for endurance
b. Dedendum collar in the clutch? strength, it is subjected to:
c. Top rooth a. 2 – 3 mm a. Completely reversed load
d. Top land b. 4 – 5 mm b. Static load
Which of the following could be the c. 6 – 7 mm c. Impact load
effect of cold working? d. 8 – 9 mm d. Dynamic lo
a. Increase the fatigue strength The draft allowance on metallic pattern Which of the following is used to
b. decrease the fatigue strength as compared wooden ones is: measure the clearance between the
c. Does not influence fatigue a. More value and tappet of an automobile
strength b. Same engine?
d. None of these c. Less a. Shape gauge
Which of the following is not an angle d. More or less depending on size b. Slip gauge
measuring device? Which of the following where the gear c. Feeler gauge
a. Bevel protector tooth vernier is used to measure? d. Vernier scale
b. Sine bar a. Module The working load P for a chain for crane
c. Combination square b. Gear tooth profile applications is expressed in terms of
d. Angle iron c. Gear tooth thickness of gear diameter of link “d” in cm as follows.
Which of the following pairs is formed tooth a. P = 1.5d2
if shaft is revolving in a bending? d. Pitch line thickness of gear tooth b. P = 25d2
a. Lower pair If t is the thickness of sheet to be spot c. P = 50d2
b. Turning pair welded, then electrode tip diameter is d. P = 500d2
c. Sliding pair equal to _______. The diameter of the washer is
d. Cylindrical pair a. t2 generally:
What is meant by drossing? b. 2 sq. rt. of t a. Equal to the diameter of the bolt
a. A method of cleaning the casting c. Sq. rt. of t b. Slightly more than the diameter
b. An inspection method for d. 1.5 sq. rt. of t of the bolt
castings Coaxing is the procedure of increasing: c. Slightly less than the diameter of
c. A method of deoxidation of a. Metal strength the bolt
molten metal b. Metal hardness by surface d. Of any size that suits the
d. The formation of oxides on the treatment application
molten metal surface c. Metal resistance to corrosion by In case of gears the addendum is given
What is the usual value of helix angle of coating by:
a drill? d. Fatigue limit by overstressing a. One module
a. 120 degrees the metal by successively b. 2.16 x module
b. 110 degrees increasing loadings c. 1.57 x module
c. 60 degrees d. 1.25 x module
d. 30 degrees
Cutting speed for some materials are d. 1639°C d. 150040-1650 Mpa
as under which one of the following It is the ability of a material to absorb In case of a knuckle joint, the pin is
could be cutting speed for brass? energy when deformed elastically and most likely to fail in:
a. 30 m/min to return it when unloaded. a. Shear
b. 40 m/min a. Creep b. Tension
c. 80 m/min b. Fatigue strength c. Compression
d. 50 m/min c. Resilience d. Double shear
Which of the following where turn d. Toughness Copper and most of its alloys can
buckle has? In usual spur gearing, the: hardened by which of the following?
a. Left hand threads on one end a. Pitch circle and abase circle are a. Cold working
and right hand threads on other the same. b. Soaking
end b. Working depth includes c. Patenting
b. Right hand threads on both ends clearance d. Case hardening
c. Left hand threads on both ends c. Tooth outline are always Which of the following will best
d. No threads cycloidal curves describe sunk key?
How do you call a body having identical d. Tooth outline are usually a. The keyway is helical along shaft
properties all over? involute curves b. The keyway is cut in shaft only
a. Heterogeneous The column splice is used for c. The keyway is cut in hub only
b. Homogeneous increasing: d. The key is cut in both shaft and
c. Elastic a. Cross-sectional area of the hub
d. Ductile column At what temperature range where
In general, the design stress and factor b. Length of the column ferromagnetic alpha iron exists?
of safety are related as follows: c. Strength of the column a. Below 723°C
a. Design stress = ultimate stress d. All of the above b. 700 - 910°C
time factor of safety. What tool is used in foundry for c. 1000 – 1440°C
b. Design stress = ultimate stress something and cleaning out d. Above 1539°C
divided by factor of safety. depression in the mould? What is the usual percentage of cut on
c. Factor of safety = design stress a. Swab the return stroke of hack saw blade?
divided by ultimate stress. b. Gagger a. 0
d. Ultimate stress = factor of safety c. Bellows b. 5
divided by design stress. d. Rammer c. 7
When measuring a drill for size, Which of the following is not used to d. 9
measure across the resemble the shape of tool bit? How do you call a cam where in the
a. Margins a. Thread cutting follower reciprocates or oscillates in a
b. Flutes b. Center cutting plane parallel to its axis?
c. Shank c. Square nose a. Circular cam
d. Point d. Round nose b. Reciprocating cam
How do you call the tool used for Galvanized iron is a term referring to c. Cylindrical cam
cleaning files? iron coated with: d. Oscillating cam
a. File cleaner a. Tin Which of the following stresses that is
b. File card b. Zinc independent of loads?
c. File oilstone c. Magnesium a. Shear stress
d. Scraper d. Aluminum b. Residual stress
How many links are there in a Which of the following metals will c. Design stress
pantograph? respond to heat treatment? d. Yield stress
a. 3 a. Cast iron Which of the following is the best
b. 4 b. Wrought Iron process for butt welding of two plates
c. 5 c. Medium Carbon Steel each of which is 25 mm thick?
d. 6 d. Low Carbon Steel a. Electro slag welding
Arc metal patterns are used for: At what temperature that gamma iron b. Gas welding
a. Precision castings exist? c. Submerged arc welding
b. Small castings a. Between 910oC to 1400oC d. Steam welding
c. Large castings b. Between 1400oC and 1539oC How do you call the distance of the
d. Large scale production of c. Near melting point tooth which is equal to the sum of the
castings d. Room temperature addendum and dedendum?
Fatigue failure occurs when a part is If the first digit in AISI and SAE a. Full depth
subjected to: designations is one (1), then it b. Working depth
a. Compressive stress indicates what? c. Whole depth
b. Tensile stress a. Carbon steels d. pitch
c. Torsional stress b. Nickel steels What is the function clutch in the
d. Fluctuating stress c. Molybdenum steels machine tool?
When is the pressure release in d. Chromium steels a. Alignment of drive
resistance welding? A pantograph is a mechanism having: b. Lowering of drive
a. After the weld cools a. Lower pairs c. To insure that shafts line up at
b. During heating period b. Rolling pairs high speed
c. After completion of current c. Spherical pairs d. To contact shaft so that the
d. Just at the time of passing the d. Higher pairs driven shaft will rotate with the
current What is the range of the tensile driving shaft and to disconnect
Paramagnetic alpha iron changes to strength of common varieties of cast them at all.
gamma iron at what temperature? iron?
a. 440°C a. 40-60 Mpa
b. 910°C b. 150-180 Mpa
c. 970°C c. 840-5000 Mpa
Which of the following cams where the A circle bounding the bottom of the A type of gear tooth cut inside a
follower reciprocates or oscillates in a teeth: cylinder or ring
plane perpendicular its axis of a. Addendum circle a. Rack gear
rotation? b. Addendum cylinder b. Ring gear
a. Tangential cam c. Pitch circle c. Miter gear
b. Cam curves d. Dedendum circle d. Internal gear
c. Radial cam Alloy steel known for its resistance to Test is designed primarily for
d. Cylindrical cam corrosion, abrasion, and wear that is application to electric welded tubing
The mould for casting ferrous materials usually ideal for mill grinding of ore in for detection of lack of penetration or
in continuous casting process is made cement and concentrator application. overlaps resulting from flash removal
of what materials? It is usually combined with in the weld.
a. Copper molybdenum to increase the depth a. Butt weld
b. Medium carbon steel hardening. b. Paste
c. High carbon steel a. Manganese chromium steel c. Lap weld
d. Low carbon steel b. Chromium-moly steel d. Double butt weld
Arc below takes place in: c. Chorome-nickel-moly steel Milling machine accessories are used
a. Gas welding d. Manganese-moly steel to hold milling cutter in the milling
b. Arc welding when straight A machinery operation whereby the machine
polarity is used tool rotates while the feed is stationary. a. Spindle – nose tooling
c. Arc welding when reversed a. Shaping b. Milling machine cise
polarity is used b. Milling c. Vertical milling attachment
d. Welding stainless steel c. Turning d. Milling machine arbors
Type if V-belts to use in a driving pulley d. Reaming Have the same thermal and minimum
with speed of 360 rpm and transmitting The change in length per unit original film thickness limitation as sleeve
5 Hp. length is bearing
a. Type A belts a. Strain a. Ball bearing
b. Type B belts b. Stress b. Roller bearing
c. Type C belts c. Deformation c. Thrust bearing
d. Type D belts d. Elastic modulus d. Oil bearing
Which if the following is not a common An oil storage roof formed to Which tool does not belong to the
term relating to the classification of approximately the surface of a right group?
fits? cone, supported only at its periphery a. Vice grip
a. Tunking a. Self-supporting umbrella roof b. Feeler gage
b. Snug b. Self- supporting dome roof c. Torque wrench
c. Medium force fit c. Supported cone roof d. Adjustable wrench
d. Bound d. Self-supporting cone roof Ferrous metals contain a relatively
During tensile test, which if the An oil storage tank roof formed to large amount of
following stress-strain curve(s) fits for a approximately spherical surface, a. manganese
glass rod? supported only at its periphery b. carbon
a. A straight line a. Self-supporting umbrella roof c. sulfur
b. A parabola b. Self-supporting cone roof d. phosphorus
c. An irregular curve c. Self-supporting A fillet weld whose size is equal to the
d. A sudden break d. Supported cone roof thickness of the thinner joint member
Stainless steel is obtained principally Within the elastic limit, the stress is a. Butt joint
by the use of which of the alloying proportional to strain. b. Butt weld
elements? a. Hooke’s law c. Tack weld
a. Chromium b. Modulus of elasticity d. Full –fillet weld
b. Nickel c. Offset ratio The cheapest and the most abundant
c. Carbon d. Buckingham’s principle engineering material
d. Tungsten The length of arc between the two a. aluminum
How are gears for watches generally sides of a gear tooth on the pitch circle b. steel
manufacture? a. Circular thickness c. Cast iron
a. Die casting b. Axial plane d. babbits
b. Machining on hobber c. Helix angle A gear is one in which angle is 90
c. Power metallurgy process d. Chordial curves degrees that is the pitch cone has
d. Stamping It refers to any layer or deposit of become a plane
What is the effect of alloying zinc to extraneous material on the hat transfer a. Crown gear
copper? surface b. Angular gear
a. Increases hardness a. Low line c. Miter gear
b. Impart free-machining properties b. Pressure drop d. Spiral gear
c. Improve hardness and strength c. Fouling They are usually the steel or steel
d. Increase strength and ductility d. Scaling casting
(if added up to 10-30%) The ability of material or metal to resist a. Mild steel
A twist drill is specified by which of the being crushed is b. Carbon steel
following? a. Fatigue strength c. Fire box steel
a. Its shank and diameter b. Bending strength d. Drop forge dies
b. Shank, material and flute size c. Torsional strength Gears used to transmit power between
c. Its diameter and lip angle d. Compressive strength shafts axis of which it intersect
d. Shank, material and diameter a. Spur gears
b. Bevel gears
c. Helical gears
d. Straight bevel gears
A corrosion occurs within or adjacent Accident prevention is The maximum stress which is reached
to a crevice formed by contact with a. An association of employers, during a tension test:
another piece of the same or another organization and individuals a. Stress
metal: b. The foreman’s responsibility b. Elasticity
a. Pitting just as much as production c. Strain
b. Galvanic c. The responsibility of top d. Tensile strength
c. Erosion management Galvanized steel plate is
d. Crevice d. A job of a safety director a. Aluminum
What heat treatment process can cast One important skill that operators of b. Tin
steel materials of high chrome, high machine tools must have is an c. Zinc
manganese, etc. type steel be understanding of measurement which d. Manganese
subjected for the purpose of machining demands A bevel gears of the same size
process? a. speed mounted on a shaft at 90 degrees
a. Annealing b. precision a. Crown gears
b. Tempering c. sociability b. Spur gears
c. Normalizing d. neatness c. Angular gears
d. Quenching Test sometimes referred to as an d. Miter gears
Which of the following is not the work upsetting test A weld made to hold the parts of a
of a machinist? a. Bend weldment in proper alignment until the
a. Reboring b. Flaring final welds are made
b. Overhauling c. Flange a. Butt weld
c. Grinding d. Crush b. Tack weld
d. Boring The follower reciprocates or oscillates c. Fillet weld
The corrosion of iron or iron-based in a plane perpendicular to the axis of d. Full fillet weld
alloys rotation of the cam. Commonly utilized/cheapest shaft
a. Rusting a. Radial cam material available in the market with
b. Crazing b. Cylindrical cam carbon content of 0.28 to 0.34%
c. Chalking c. Cam curves a. SAE 4132
d. Fritting d. Tangential cam b. SAE 4320
It is used to enable milling machine to Strength of a material is that of a stress c. SAE 1030
take climb milling cuts intensity determined by considering d. SAE 4130
a. Helical driving mechanism the maximum test load to act over the A cone formed by elements which are
b. Spindle original area of the test specimen: perpendicular to the elements of the
c. Read out a. Yield point pitch cone at the large end
d. Backlash eliminator b. Ultimate strength a. Cone distance
Which of the following metals is non- c. Breaking strength b. Back cone
magnetic? d. Elastic strength c. Root cone
a. Manganese steel A machine used in testing steel d. Cone center
b. Cast steel generally strike the specimen with an A weld place in a groove between two
c. Alloy steel energy from 220 to 265 ft-lb. abutting members
d. Cast iron a. Izod test a. Full-fillet weld
The space between the adjacent teeth b. Charpy test b. Tack weld
a. tooth c. Rockwell test c. Butt weld
b. flack d. Test blocks d. Fillet weld
c. backlash The total amount of permanent The deterioration of organic coating
d. width extension of the gage length measured characterized as completely
Determine the estimated weight of an after the specimen has fractured and is a. Chalking
A-36 steel plate of size ½ x 4 x 8 expressed as percentage increase of b. Rusting
a. 280 kg the original gage length c. Chocking
b. 332 kg a. Elongation d. Fritting
c. 301 kg b. Strain Which of the following is not a
d. 297 kg c. Stress classification of iron ore
Steel containing large amounts of mild d. Elastic limit a. siderite
nickel and chromium Which of the following is not part of a b. hermatite
a. Carbon steel lathe machine? c. sulfurite
b. Stainless steel a. fan d. magnetite
c. Alloy steel b. carriage The machine which can flatten surface
d. Cat steel c. headstock on a horizontal, vertical or angular
A cylindrical tank with 10 in inside d. tailstock plane is:
diameter contains oxygen at 2500 psi. Which of the following is not a kind of a. Drilling machine
calculate the required wall thickness in cast iron? b. Shaper machine
mm under stress of 28,000 psi a. Gray iron c. Power saw
a. 11.44 mm b. White iron d. Lathe machine
b. 11.34 mm c. Malleable iron The size of an equal-length fillet weld
c. 10.6 mm d. Lead iron shall be based on the length of the
d. 10.3 mm Which of the following metal is easy to largest
It has molybdenum alloy except chisel? a. Isosceles right triangle
a. SAE 43XX a. Alloy steel b. square
b. SAE 41XX b. Manganese steel c. Right triangle
c. SAE 6XXX c. Stainless steel d. rectangle
d. SAE 5XXX d. Cast iron
Major component of bronze casting If gears cannot connect parallel shafts, The ability of metals to stand loads
a. Copper they are called: without breaking down
b. Manganese a. Cycloidal gears a. strain
c. Zinc b. Helical gears b. stress
d. Lead c. Spur gears c. elasticity
Which of the following is not part of the d. Toothed gears d. strength
headstock? What load P which cause a total An iron has physical properties closely
a. Anvil deformation of 0.036 inch of a steel resembling those of mild steel
b. Spindle rock which has a cross section area of a. Malleable cast iron
c. Motor 4 in2 and a length of 6 ft. b. Malleable iron
d. Back pressure a. 55,000 lb c. White iron
Split pulley or pulley made of separate b. 40,000 lb d. Gray iron
section bolted together at the rim, the c. 60,000 lb The temperature above which the alloy
maximum speed should be limited to d. 50,000 lb is liquid and will run
about _____% of the maximum speed A type of welding whereby a wire or a. Melting point
of solid pulley powder from the nozzle of a spray gun b. Fow point
a. 65 to 75% is fused by a gas flame, arc or plasma c. Pour point
b. 45 to 50% jet and the molten particles are d. Liquids
c. 55 to 60% projected in a form of a spray by means SAE steel that responds to heat
d. 80 to 90% of compressed air or gas treatment
The shearing strain of a block of metal, a. Electro-slug building a. SAE 1060
3 inches high is subject to a shearing b. Electro-beam welding b. SAE 1117
high force which distorts the top c. Plasma-arc welding c. SAE 1030
surface through a distance of 0.0036 d. Metal spray welding d. SAE 1020
inch. An alloy of tin, copper, antimony, or Weld-metal impact specimen shall be
a. 0.0015 rad sometimes lead: taken across the weld with one face
b. 0.008 rad a. Gold substancially parallel to and within:
c. 0.0010 rad b. Babbitt a. 3/4 “
d. 0.0012 rad c. Aluminum b. 1/32”
Which of the following is the d. Cast iron c. ¼ ”
differential of the shear equation? An iron in which most of the carbon is d. 1/16”
a. Bending moment chemically combined with the iron: The unit of deformation is called:
b. Load of the beam a. Cast iron a. Torsion
c. Tensile strength of the beam b. Gray iron b. Strain
d. Slope of the beam c. White iron c. Stress
Which of the following materials to be d. Malleable iron d. shear
utilized to reduce cost in the A weld of approximately triangular Imparts of reciprocating motion to a
manufacturing of large worm gears? cross section that join two surfaces at single point cutting tool
a. Alloyed aluminum approximately right angles as in lap a. Dividing head
b. Bronze rim with cast iron spider joint: tee joint; corner joint b. Slotting attachment
c. Cast iron rim with bronze spider a. Single welded lap joint c. Circular pitch
d. All of the above b. Fillet weld d. Circular milling attachment
The ratio of stress to the corresponding c. Tack weld A test for pipe used for coiling in sizes 2
strain below the proportional limit d. Butt weld inches
a. Stress-strain diagram Determine the number of teeth in a a. Flaring
b. Gage method driver of two spur gears mesh which b. Crush
c. Modulus of elasticity has a velocity ratio of 0.75. The driven c. Flange
d. Tensile strength gear has 36 teeth d. Bend
Killed steel is very much associated a. 50 The area of the machine shop whose
with b. 46 metal is being melted to form a new
a. manganese c. 48 shape is the:
b. sulfur d. 26 a. Foundry area
c. phosphorous Major component of bronze casting is: b. Tool and die
d. silicon a. Copper c. Welding area
Wheels are sometimes used for the b. Manganese d. Mass production area
transmission of high power when an c. Zinc A machine used for the testing of very
approximately constant velocity ratio is d. Lead thin steel or surface layers
desired: What process does not belong to the a. Charpy test
a. Bevel cones group? b. Izod test
b. Friction gearing a. Brazing c. Description test
c. Spur friction wheels b. Soldering d. Rockwell test
d. Evans friction wheels c. Hardening Through how many degrees must an
Gearing in which motion or power that d. Resistance welding involute cam turn in order to raise its
is transmitted depends upon the The follower reciprocates or oscillates follower 3 inches if the diameter of the
friction between the surfaces in in a plane parallel to the axis of the base circle is 5 inches.
contact rotation: a. 58.7 deg
a. Bevel gears a. Cam curves b. 180 deg
b. Spur friction wheels b. Cylindrical cam c. 64.4 deg
c. Evans friction cones c. Tangential cam d. 68.79 deg
d. Friction gearing d. Radial cam
A 3” diameter short shaft carrying 2 The path traced by a point moving at a Negative allowance is also called:
pulleys close to the bearings transmit fixed distance from an axis and with a a. Interference of metal
how much horsepower if the shaft uniform motion to the axis and a point b. Feeler gage
makes 280 rpm moving such a path: c. micrometer
a. 199 hp a. Helical motion d. tolerance
b. 198 hp b. Spherical motion V-belts operate efficiently at speed of
c. 200 hp c. Translational about (fpm) :
d. 210 hp d. Path of a point a. 4500
It is hardening treatment whereby a The minimum clearance allowed for b. 4400
cast metal is being heated to a very meshing spur gears with a circular c. 4200
high temperature then suddenly pitch of 0.1571 and diametral pitch of d. 3600
subjected to rapid cooling to improve 20. the spur gear have 25 teeth Which of the following is not used to
hardenability or wear resistance is a. 0.007855 resemble the shape of tool bit ?
called b. 0.007558 a. Round nose
a. Normalizing c. 0.008578 b. Center cut
b. Tempering d. 0.007585 c. Square nose
c. Annealing The frustums of two cones are used in d. Thread cutting
d. Quenching a manner to permit a variation of Safety features that must be placed
Which of the following elements when velocity ratio between two parallel and maintained at machine,
large quantity is harmful to ferrous shafts blacksmith, welding and foundry shop.
metal? a. Evans friction cones a. Safety goggle
a. Sulfur b. Bevel cones b. Walkway guide
b. Silicon c. Spherical cones c. Safety notices in markings
c. Zinc d. Friction gearing d. All of these
d. Aluminum Determine the estimated weight of an What is the modulus of elasticity if the
Flexible material used to seal A-36 steel plates size 3/16” x 6’ x 20’ stress is 44,000 psi and a unit strain of
pressurized fluids, normally under a. 919 lbs 0.00105 ?
dynamic condition b. 1012 lbs a. 41.905 x 106
a. Nylon c. 829 lbs b. 42.300 x 106
b. Seal d. 735 lbs c. 41.202 x 106
c. Teflon Heating of metal above the critical d. 43.101 x 106
d. Packing temperature and then cooling slowly A mechanism which usually do the
To prevent leakage in dynamic seal usually in the furnace to reduce the indexing in a machine tool:
a. Gasket hardness and improve the a. Universal chuck
b. Seals machinability is called b. Slooter
c. Felts a. Normalizing c. Dividing head
d. Packings b. Annealing d. indexing
Cast alloy steel for very high c. Tempering When the hole is smaller than the
temperature application d. Quenching shaft, it will take pressure to put the
a. Manganese-nickel steel casting Is a form of correction that develop on parts together. The allowance is said to
b. High chrome steel casting a highly localized areas on a metal be negative and is termed :
c. Chrome nickel steel casting surfaces a. Negative tolerance
d. High manganese casting a. Crevice b. Negative allowance
A joint between two overlapping b. Erosion c. Negative fits
members in which the overlapped c. Galvanic d. Interference of metal
edge of one member is welded with a d. Spitting A type of coupling that allows slight
fillet weld: Type of bolt commonly used in the amount of torsional angular flexibility
a. A single welded lap joint construction that is threaded in both due to introduction with some elastic
b. Double welded lap joint ends. material cylindrically wrapped around
c. A single lap joint with backing a. Stud bolt the bolts in the flange.
d. Tack weld b. Acme threaded bolts a. Simple elastic bonded coupling
An important accessories of milling c. Square threaded bolts b. Elastic material bushed
machines d. Hex bolts coupling
a. Milling machine vise The three-moment equation may be c. Elastic material bonded coupling
b. Cutters used to analyze: d. All of the above
c. Ram a. Tapered column A system of forces in space is in
d. Vertical milling attachment b. Continuous beam equilibrium. If two unequal and
Split pulley or pulley made of separate c. Composite beam opposite collinear forces are added,
sections bolted together at the rim, the d. Axially end loaded beam which of the following if any us true?
maximum speed should be limited to Type of V-belt to use in a driving pulley a. Equilibrium is maintained
about _____% of the maximum speed with speed of 360 rpm and transmitting b. Equilibrium is destroyed
of solid pulley. 5 hp : c. An unbalance moment exists
a. 65 to 75% a. Type C belts d. None of these is true
b. 45 to 50% b. Type B belts The capacity of metal to withstand load
c. 55 to 60% c. Type A belts without breaking is :
d. 80 to 90% d. Type D belts a. Strength
Which of the following is not used to Recommended best cutting angle of b. Stress
temper steel? drill for work on steel or cast iron is c. Elasticity
a. Oil bath _____ degrees. d. Strain
b. Brine/salt bath a. 48
c. Steam bath b. 63
d. Water bath c. 59
d. 50
In a pair of gears, ______ is the plane c. projectiles In shear pin or breaking pin design, we
perpendicular to the axial plane and d. acceleration may use the data experienced by Link-
tangent to the pitch surface. Which of the following acronyms is not Belt for 1/8 inch to pins and breaking
a. Pitch generally used as standard stress is _____ksi.
b. Pitch plane a. ASTM a. 40
c. Pitch circle b. SAE b. 55
d. Pitch point c. IPS c. 50
The maximum stress to which a d. AISI d. 48
material may be subjected before The smallest area at the point of Cold working of steel plates make the
failure occurs: rupture of a tensile specimen divided metal _______.
a. Ultimate strength by the original area is called: a. Tougher
b. Ultimate stress a. Percentage elongation b. More ductile
c. Endurance limit b. Izod test c. Harder
d. Tensile stress c. Charpy test d. More malleable
Permanent deformation or strain may d. Percentage reduction of the A property of material which relates the
occur without fracture. area lateral strain to the longitudinal strain
a. malleability Metal that assists lubrication or a. Stress
b. elasticity lubricant in itself: b. Strain
c. ductility a. zinc c. Poisson’s ratio
d. plasticity b. antimony d. Strength
Length of contact between two mating c. babbitt Ratio of unit lateral deformation to the
parts in a screw and nut threads d. lead unit longitudinal deformation:
measured axially is called: The property that characterizes a a. Poisson’s ratio
a. Arc of contact material ability to be drawn into wire: b. Strain
b. Depth of engagement a. Ductility c. Stress
c. Length of engagement b. Thermal conductivity d. Modulus of rigidity
d. Axis of contact c. Tensile strength For a high corrosion resistant stainless
The best instrument for measuring a d. Endurance limit steel, what minimum chromium
thousand of an inch Which of the following materials is content is required ?
a. micrometer unsuitable as a bearing : a. 8%
b. tachometer a. Teflon b. 4.3%
c. caliper b. Low carbon steel c. 1.1%
d. pyrometer c. Cast iron d. 5.8%
Outstanding safety record contributes d. Nylon Deals only with the motion of bodies
to: What is commonly shop practice to without reference to forces that cause
a. High productivity prevent solder from running away from them:
b. Outstanding performance that surface to be joined? a. dynamics
expects reward from a. Surround the work with clay b. kinetics
management b. Introduce around the work rolled c. statistics
c. Confidence in foreman’s ability wet cloth d. kinematics
to perform well c. Put asbestos sheeting around It is the difference of addendum and
d. Pride and enthusiasm to one-self the work dedendum which is equivalent to the
Separate forces which can be so d. All of these whole depth less working depth.
combined are called: Major and minor diameters are a. Fillet space
a. Non-concurrent forces commonly used in: b. Fillet radius
b. Couple a. Screw thread c. Clearance
c. Combined forces b. bolts d. Backlash
d. Concurrent forces c. gear An object thrown upward will return to
Which of the following is not a d. All of these earth with the magnitude of terminal
structural steel class? A liquid metal: velocity equal to:
a. Low carbon steel a. Mercury a. zero
b. Stainless steel b. Lead b. One-half the initial velocity
c. Medium carbon steel c. Zinc c. Twice the initial velocity
d. Tool and die steel d. Aluminum d. The initial velocity
When two elastic bodies collide, which What is the difference between brass The ability of a metal to be deformed
of the following laws can be used to and bronze? considerably without rupture is called:
solve for the resulting velocity? a. Brass is composed of copper a. Malleability
a. Dalton’s Law and zinc while bronze is b. elasticity
b. Avogadro’s Law compose of copper and tin c. ductility
c. Conservation of energy b. Brass is composed of copper and d. plasticity
d. Conservation of momentum zinc while bronze is basically What is the moment of inertia of a
and conservation of energy copper and tin plus non-ferrous rectangle about its base?
Copper and most of its alloys can be alloy such as manganese, a. bh2/6
hardened by: aluminum, and chromium b. bh3/3
a. Patenting c. Bronze is reddish in color while c. Bh2/3
b. Cold working brass is a mixture of copper and d. Bh3/12
c. Case hardening antimony Statement that a given body is in static
d. Soaking d. Bronze is mostly an alloy of equilibrium means that the body
It is a science of motion that can be copper and tin while brass is a cannot:
solved in terms of scalar or vector mixture of copper and antimony a. Have any type of motion
algebra: b. Be acted upon by more than one
a. Kinematics force
b. Curvilinear translation c. Undergo any displacement
 d. Have any acceleration A type of gear commonly used in Normal stress relieving temperature for
A kind of thread that is generally used parallel- shaft transmission especially cast steel:
a. UNEC when a smooth, continuous action is a. 200 to 350 F
b. UNC essential as in high speed drives up to b. 400 to 500 F
c. UNF 12,000 fpm : c. 300 to 400 F
d. UNEF a. Bevel gear d. 450 to 550 F
A kind of thread in which the width of b. Herringbone gear What is the property of a material
the thread us approximately equal to c. Spur gear which resists forces acting to pull the
the depth of the thread and the space d. Helical gear material apart?
between threads are approximately A metal characteristic that withstands a. Shear strength
equal. forces that causes twisting. b. Tensile strength
a. Square thread a. Torsional strength c. Torsional strength
b. Acme thread b. Modulus of elasticity d. Compressive strength
c. Buttress thread c. Twisting moment The reciprocal of the diametral pitch
d. Whitworth thread d. elasticity equivalent to the ratio of pitch
A lathe machine threading mechanism What happens to a drill if the operating diameter to the number of teeth:
: speed is too fast? a. lead
a. Reverse gear and lever a. Drill will crack b. clearance
b. Spindle gear b. Drill will become overheated and c. module
c. Change stud gear will bend d. involute
d. All of these c. Drill will become overheated Most effective alloying element for
The hardness of helical and and will be drawn from steel reducing brittleness of steel at very low
herringbone gear teeth after heat d. Drill will become very dull and temperature:
treatment is 210 to 300 Brinell wear fast a. manganese
Hardness, for gear and pinion is at : The angle, at the base cylinder of an b. molybdenum
a. 360 Brinell min. involute gear, that the tooth makes with c. silicon
b. 400 Brinell max. the gear axis : d. nickel
c. 340 – 350 normal a. Base helix angle The phenomenon of continuous
d. All of these b. Pressure angle stretching under load even if the stress
Fillet radius in machine parts is usually c. Arc of recess is less than the yield point :
introduced to: d. Arc of approach a. Elasticity
a. Improve the lock of the parts It equalizes the energy exerted and the b. Ductility
b. Reduce concentration of stress work done thus preventing excessive or c. Plasticity
and extend life of the parts sudden changes of speed: d. Creep
c. Avoid obstruction a. flywheel For moderate speed of mating gears,
d. Necessary to lessen casting b. balance wheel the ideal ratio contact is:
weight c. flywheel pulley a. 1.25 – 4.00
Device used to measure accurately d. All of these b. 1.20 – 1.45
speed: Non-ferrous filler metal is melted into c. 1.00 – 1.30
a. speedometer grooves or as fillet on the mother d. 0.35 – 1.45
b. Dial indicator metal; the base metal is not melted. What is the difference between the
c. tachometer This is commonly used for joining iron shaper and a planer?
d. Dial gage based machine parts or in repair works a. The tool of the shaper moves
Clearance to a new boiler installation of some materials. It is called: while on the planer is
to the existing or old plant building a. Spot welding stationary.
should follow a minimum clearance of b. Braze welding b. The shaper can perform slotting
______ between top of the boiler proper c. brazing operation while the planer
and the ceiling as stated in the PSME d. Gas welding cannot
code. If the velocity of a mass is the same all c. The shaper handles large pieces
a. 2000 mm (max) the time during which motion takes while the planer handles only
b. 1000 mm (max) place is called: small pieces
c. 2130 mm (max) a. deceleration d. The tool of the shaper moves in
d. 2150 mm (max) b. Uniform motion reciprocating motion while the
It is used in conjunction with circular c. acceleration tool in the planer moves in rotary
cross sectional members to retain oil d. None of these motion.
and prevent dirt, foreign particles, A shaft is to be checked for What type of gear which can transmit
moisture and to permit pressure concentricity. A suitable method of power at a certain angle.
differential between exterior and performing the check is: a. Helical gear
interior of the applied part: a. Bench centers and dial b. Worm gear
a. seal indicator c. Bevel gear
b. gasket b. Line shafting bearing alignment d. Herringbone gear
c. Safety shield c. Observing vibration of the Finding the resultant of two or more
d. packing shafting forces is called :
All are associated with the grade of d. None of these a. Coplanar force
steel except: All are associated with standard b. Non-coplanar forces
a. SAE 43XX material specified except: c. Couple
b. SAE 13XX a. American Iron and Steel Institute d. Composition of forces
c. SAE 10XX b. Society of Automotive Engineers
d. SAE 74XX c. Southeast Asia Iron and Steel
Institute
d. American Society for Testing
Materials
The distance a helical gear or worm Hydrostatic bearing is one which: The path of contact involute gears
would thread along its axis in one a. The lube oil is supplied under where the force/power is actually
revolution if it were free to move axially pressure transmitted. It is a straight imaginary
is called :______. b. Lube oil is not pressurized line passing through the pitch point
a. Length of action c. There is no lube oil and tangent to the base circle.
b. Length of contact d. Bearing is lightly loaded a. Principal reference plane
c. land Poisson’s ratio is the ratio of: b. Pitch point
d. lead a. Shear strain to compressive c. Front angle
The arbitrary modification by removing strain d. Line of action
a small portion of a tooth material at b. Elastic limit to compressive The nominal diameter of the bolts is
the tip of the gear tooth is called: strain the:
a. Tip removal c. Lateral strain to longitudinal a. Major diameter
b. Tip undercut strain b. Minor diameter
c. Tip relief d. Elastic limit to proportional limit c. Mean diameter
d. Pressure angle cut Considering a maximum safe center d. All of these
Machine tool used for laying straight distance of sprockets should be _____ Hypoid gear is special type of gear like :
lines on metal surfaces made of sharp pitches. Very long center distance a. Worm gear
tool steel is called cause catenary tension on the chain. b. Spur gear
a. Plain scriber a. 70 c. Herringbone gear
b. A trammel b. 80 d. Bevel gear
c. Hermaphrodite caliper c. 60 A lathe with multiple cutting stations:
d. divider d. 50 a. Turret lathe
The product of the resultant of all In the gear design, the total work load b. Engine lathe
forces acting on a body and the time must be equally shared by its arms. c. Manual lathe
that the resultant acts: Rim must be rigid to support these d. None of these
a. Angular impulse arms and also the head is Which of the following is not structural
b. Angular momentum recommended for its stiffening value. class of steel?
c. Linear impulse The assumption in the detailed design a. Low carbon steel
d. Linear momentum of rim thickness and depth of beam is b. Tool and die steel
A material that should be avoided in _____ circular pitch (Pc) c. High chrome alloy steel
constructing wood pattern: a. 0.65 d. High strength low alloy steel
a. Sap wood b. 0.50 A furnace used in melting ferrous
b. Kiln dried wood c. 0.56 metals:
c. Heart wood d. 0.44 a. Annealing furnace
d. Core portion of wood The first derivative of kinetic energy b. Tempering furnace
The gradual chemical reaction by other with respect to velocity is: c. Induction furnace
substance such that the metal is a. power d. Normalizing furnace
converted to an oxide or other b. acceleration Tooth width meaimprovessured along
compounds : c. momentum the chord at the pitch circle:
a. corrosion d. None of these a. Flank
b. cheaping Name the type of chuck commonly b. Face width
c. rusting used for holding workpiece in a lathe c. Width of space
d. weathering operation? Example, 3-jaw universal d. Chordal thickness
A property of matter which causes it to chuck, 4-jaw independent chuck Alloy that strength of steel at high
resist any change in its motion or state a. Magnetic jaw chuck temperature application.
of rest. b. 2-jaw independent a. tungsten
a. brake c. 8-jaw universal b. molybdenum
b. friction d. combination c. chromium
c. inertia What type of gear is used for high d. All of these
d. impulse speed operation? A machinery operation whereby done
Which do not belong to foundry or a. helical with the work accurately fastened has
metal casting shop? b. spur a reciprocating (forward and backward)
a. Shake-out machine c. bevel motion and the tool head is stationary.
b. Molding machine d. worm a. shaping
c. Coremaking One of the causes of spur gear tooth b. planning
d. Forging machine breakage is the unbalanced load on c. turning
It is advised that in rubber belts one end of the tooth that results in d. reaming
application / mounting, it should have higher stresses than when the load is The center of gravity of a solid pyramid
an initial tension of ______ inch/ply. evenly distributed. To minimize this or cone with a total height of H is :
a. 18 to 24 problem, the face width “b” should not a. 1/4 H
b. 15 to 20 be greater than the thickness (or pitch) b. 3/5 H
c. 12 to 15 of the tooth. In the absence of test c. 1/3 H
d. 10 values, the following can be a guide: d. 1/3 H
Ordinary steel begins to lose strength a. 2.5 Pc < b <4 Pc This particular cutting tool material
and elasticity significantly at about b. 2.0 Pd < b <4 Pd could withstand cutting temperature of
:________ °F c. 2.5 Pd < b <4 Pd 1800 F and higher at cutting speed
a. 900-1000°F d. 2.0 Pd < b <4 Pc beyond those possible with other
b. 800-900°F cutting tool materials
c. 750-850°F a. Titanium carbide
d. 600-700 °F b. ceramic
c. Carbide grade
d. Cubic boron nitride
____ thread used where the thread Is the permissible variation of the size Chromium steel ( to include heat and
requires great strength and usually cut of a dimension corrosion resistant) designation
square on one side slanting on the a. tolerance a. SAE 56XX
other side b. allowance b. SAE 514XX
a. janno c. Clearance c. SAE 61XX
b. buttress d. interference d. SAE9XX
c. Square The ration of the moment of inertia of The motion of an object
d. double the cross section of the beam to the diminished/decreased speed
What is the common cutting fluids section modulus a. deceleration
used for cutting metals a. Equal to the radius of gyration b. Retarded motion
a. Water with soda and borax b. Equal to the area of the cross c. Negative impulse
b. Light mineral oil section d. All of these
c. Soluble oil c. Measure of distance What tool will be used in making wood
d. All of these d. Dependent on the modulus of pattern in the foundry shop
It improves red hardness of steel elasticity a. Band saw
a. Chromium The single force which produces the b. Drill machine
b. cobalt same effect upon a body as two or c. Saw and chisel
c. boron more forces acting together is called: d. hammer
d. lead a. Resultant force In general, the design stress and factor
Product of mass and linear velocity is b. Co-planar force of safety are related as follows
known as c. Couple a. Design stress = ultimate stress
a. impulse d. Non coplanar force times factor of safety
b. Linear momentum The good deoxidizer in steel melting b. Design stress = ultimate stress
c. Angular momentum a. manganese divided by factor of safety
d. impact b. silicon c. Factor of safety= design stress
Some experiments made at Cornell c. aluminum divided by ultimate stress
University showed that experience d. All of these d. Ultimate stress = factor of safety
mechanic could bread a _________ bolt Liners are normally made of divided by design stress
due to tightening a. Cast iron The usual ratio of water to soluble oil
a. 3/8 “ b. Alloyed bronze used as cutting fluid
b. 5/8 “ c. Alloyed steel a. 50% water to 50% oil
c. ½” d. Alloyed aluminum b. 2 water to 1 oil
d. 7/16 “ Range of helix angle on helical gear c. 3 water to 1 oil
A plane perpendicular to the axial a. Less than 18 d. 4 to 80 water 1 oil
plane and to the pitch plane. In gears b. 15-25 The concave portion of the tooth
with parallel axis, the transverse plane c. 20-35 profile where it joints the bottom of the
and the plane of rotation coincide d. 35-40 tooth space
a. Transverse plane Opposite direction parallel forces a. Fillet curve
b. Principal reference plane a. concurrent b. Fillet radius
c. Normal plane b. coplanar c. Bottom depth
d. Pitch plane c. couple d. fillet
In machine shop, had forging operation d. Non-coplanar The factor of safety generally applied in
of lengthening a piece of stock while The best instrument for measuring wire rope design starts at 3-4 for
reducing the cross sectional area of thousandth of an inch standing rope application, 5-12 for
work is called a. micrometer operating rope and ____ for hazard to
a. bloating b. tachometer life and property application line
b. Upsetting c. Caliper foundry operation
c. spreading d. pyrometer a. Higher value
d. Draining out Which of the following is not a b. 7-10
What type of bearing which totally structural class of steel c. 8-10
encloses the shaft a. High speed steel d. 10-18
a. Offset bearing b. Tool and die All are functions of lubricating oil
b. Central bearing c. Low carbon except
c. Babbit bearing d. High carbon a. adhesion
d. Full bearing It is recommended for high speed b. Corrosion prevention
The yield strength of a regular yellow application that the minimum number c. Act as coolant
brass (65 to 79% Cu, 30 to 35% Zn) can of teeth in small sprocket should be d. To lighten the load
be increased/ improved by: a. 26 to 30 Type of chuck wherein the work piece
a. Cold working b. 12 - 16 with standard diameter or size could
b. tempering c. 26 - 28 be attached fast and quick specially
c. Chill casting d. 18-24 small size work of mass production
d. Heat treatment The amount by which the width of a a. Lathe drive plate
Alloy steel axle under repeated tooth space exceeds the thickness of b. Clamp toe dog
load/stress will eventually fail if the the engaging tooth on the pitch circles c. Collet attachment
load/stress above the endurance of the a. backlash d. Steady center rest
steel under consideration. The b. clearance Tap not used for cutting thread
endurance limit of the steel is therefore c. undercut ________
a. Equal to the allowable stress of d. Chordal thickness a. Tapping tap
the module of elasticity b. Bottoming tap
b. Equal to half of the ultimate c. Plugging tap
strength d. Taper tap
c. Equal to the module of elasticity
d. Equal to 80% of the elastic limit
__________ Is the theoretical profile of Non metallic material of high melting The purpose of these parts in
the thread for a length of one pitch in temperature being used as furnace application are to have better bearing
the axial plane on which design forms lining to seal the guard against marring etc.
of both the external threads are based a. Quartz bricks a. Bearing journal
a. Basic form of thread b. refractories b. Metallic seal
b. Effective thread c. Silica sand c. washer
c. Basic profile of thread d. Dolomite clay bricks d. Shaft seal
d. Design form of external thread What will be the effect in bushing gears The recommended age limit of fire tube
Killed steel is always associated with without backlash boilers
a. silicon a. jamming a. 35 years
b. manganese b. overheating b. 30 years
c. phosporous c. overload c. 40 years
d. sulfur d. All of these d. 50 years
What is the SAE specification number The color of pipe for communication is It refers to the surface of the gear
of Molybdenum-chromium-nickel a. White between the fillets of adjacent teeth
a. 48XX b. Blue a. Top land
b. 47XX c. Yellow b. Bottom land
c. 46XX d. orange c. pitch
d. 45XX Internal stress exerted by the fibers to d. fillet
The angle included between the sides resists the action of outside force is Intermediate gear is also called ______
of the thread measured in an axial called gear in a gear train arrangement
plane in a screw thread a. Shearing stress a. idler
a. Angle of thread b. Tensile stress b. pinion
b. Angle between thread or 40 c. Ultimate stress c. Third gear
c. Helix angle thread d. Compressive stress d. Mounted gear
d. Half angle thread or 20 Finding the resultant of two or more The top and bottom land for gears is
The property of a material that relates forces is called similar formed to crest and ______ for
the lateral strain to longitudinal strain a. Co-planar forces screw thread
a. strain b. Non coplanar forces a. flank
b. stress c. Couple b. Root
c. Poisson’s ratio d. Composition of forces c. Flank tooth
d. Endurance limit Height of the tooth above pitch circle d. Top land
It is used to change rotary motion to or radial distance between pitch circle The distance a helical gear or worn
reciprocating motion and top land and the tooth would thread along its axis in one
a. Helical gear a. Top tooth revolution if it were free to move axially
b. Rack gear b. addendum a. lead
c. Worm gear c. land b. thread
d. Spur gear d. Hunting tooth c. pitch
Not adaptable to welding due to Galvanized iron is term referring to iron d. land
strength and poor ductility coated with Silicon manganese steel designation,
a. Copper parts a. aluminum SAE _____
b. Aluminum parts b. tin a. 72XX
c. Cast iron parts c. zinc b. 40XX
d. All of these d. manganese c. 92XX
Which of the following does not belong Endurance strength is nearly d. 9XX
to the group proportional to the ultimate strength Which does not belong to the group
a. welding but not with a. SAE
b. soldering a. Yield strength b. AISI
c. casting b. Design stress c. SEA II
d. brazing c. Shear stress d. ASTM
It is considered semi-solid lubricant d. All of the above What is the SAE specification number
a. Lube oil Which of the following is most popular of Molybdenum
b. graphite soldering of metal a. SAE 2XXX
c. grease a. 10/80 b. SAE 3XXX
d. All of these b. 45/55 c. SAE 4XXX
Used in as cast conditions steel c. 50/50 d. SAE 5XXX
casting with carbon content less than d. 60/40 Gear used to transmit power at high
________ % C Which of the following is the velocity ratios between non
a. 0.26 differential of the shear equation intersecting shafts that are usually but
b. 0.20 a. Bending moment of the beam not necessarily at right angle
c. 0.15 to 0.18 b. Tensile strength of the beam a. Helical gear
d. 0.25 c. Slope of the elastic curve b. Bevel gear
The changes in shape or geometry of d. Load of the beam c. Worm gear
the body due action of a force on it is One of the following materials is not d. Spiral gear
called deformation or mentioned for wire rope pulley/sheave Plus or minus of the tolerance is also
a. Shear stress applications called
b. stresses a. plastic a. Total tolerance
c. compressive b. iron b. Unilateral tolerance
d. strains c. paper c. Bilateral tolerance
d. Copper alloy d. none of these
The maximum stress induced in a A metal which has a high electrical Which of the following is an unsafe
material when subjected to conductivity bit should not be used for condition in operating a lathe machine
intermittent or repeated load without high temperature metal a. Wearing denim pants/safety
causing failure is called a. silicon shoes
a. Ultimate stress b. zinc b. Wearing canvass apron
b. Endurance limit c. Chrome alloy c. Operating with safety gloves
c. Ultimate torque d. carbide d. Wearing safety goggles/hearing
d. Elastic limit The brittleness in steel at elevated aid
In involute teeth, the pressure angle is temperature is All terms and abbreviations deal with
often defined as the angle between the a. Hard drawn wire rope arrangement except this
line of action and the line of tangent to b. Cold lap ___which deals with wire rope material
the pitch circle. It is also termed as c. Red shortness strength
a. Helix angle d. Residual stresses a. preformed
b. Angle of recess The reciprocal of a diametral pitch or b. IWRC
c. Angle of obliquity the ratio of pitch diameter to number of c. Mps
d. Arc of action teeth d. Lang lay
Stresses that are independent loads a. lead Relief angle of single-point cutting mild
a. Working stress b. module steel cast iron and other average work
b. Operating stress c. involute as recommended should be in ranges
c. Residual stress d. clearance of _____ degrees for high speed tools
d. Shear stress Common defects encountered in the a. 8-12
The function of clutch in the machine foundry shop steel casting operation b. 10-15
tools is and also in welding practices c. 5-7
a. Lowering the drive a. cracks d. 12-16
b. Alignment of drive shaft b. Cold shot Mirror finish has surfaces finess of
c. To disconnect or connect at will c. Parting time _____ rms
the drive d. Blow/pin holes a. 1
d. To insure that two shafts lineup Flat leather belting not recommended b. 2-8
at high speed for use in speed excess of _____ fpm c. 1-3
The distance between adjacent rivets a. 3600 d. 2-5
is called b. 4800 It is the ability of the material to resist
a. Pitch c. 6000 deformation under stress
b. crest d. All of these a. plasticity
c. lead In the selection of wire rope, regular lay b. stiffness
d. none of these means wires and strands are arranged c. toughness
For economical cost in the in the following manner d. All of these
manufacturing large worm gears the a. Twisted in same direction Continuous stretching under load even
following materials are usually applied b. Twisted in any direction if the stress is less than the yield point
a. Bronzed rim with cast steel c. Twisted in opposite direction a. plasticity
spider d. Twisted in along direction b. elasticity
b. Cast iron with bronze spider It is recommended not to have a direct c. creep
c. Cast steel rim with brass spider drive and drive sprockets if the ratio of d. ductility
d. Alloyed aluminum rim with cast their teeth exceeds ______, use two or In grater quantity, this element is
iron spider more step combination harmful to the molten ferrous metal
Good stabilizer in stainless steel a. 10 times a. silicon
a. columbium b. 8 times b. Aluminum
b. titanium c. 5 times c. oxides
c. tantalium d. 6 times d. sulfur
d. All of these Eccentrically loaded bearing is also Metals are conductive because
Eccentrically loaded bearing is also called a. The electrons are loosely
called a. Full bearing bound to the nuclei and
a. Full bearing b. Offset bearing therefore mobile
b. Offset bearing c. Partial bearing b. Having characteristic metallic
c. Partial bearing d. Fitted bearing luster
d. Fitted bearing The distance of the tooth, which is c. They are on the left side of the
A furnace used in melting non-ferrous equal to the sum of the addendum and periodic table
metals dedendum d. They have extra electrons are
a. Cupola furnace a. Full depth exhibited by normally possible
b. Crucible furnace b. Whole depth balance state
c. Induction furnace c. Working depth It is arbitrarily defined as the push and
d. Tempering furnace d. dedendum pull
In gear design, the ratio of the pitch Moment curve to simple beam with a. force
diameter in inches to the number of concentrated load at middle span b. work
teeth takes the shape of a c. inertia
a. Module a. triangle d. power
b. Diametral pitch b. rectangular Material may be stretched and still
c. English module c. trapezoid returns to its former form/condition
d. Circular pitch d. Semi eclipse upon release is called
Cold drawing is also called a. plasticity
a. Hard drawn b. Modulus of elasticity
b. Oxidized steel c. ductility
c. Cold lap steel d. Elastic limit
d. Strain hardening
For evenly distributed and uniform d. 70 It is a type of bolt thread on both ends
wear on each meshing gear tooth, the It is a low cost spring material, suitable can be used where a through bolt
ideal design practice is to consider a where service it not severe and impossible.
____ dimensional precision is not needed: a. Coupling bolt
a. Wear resistance alloy addition to a. Helical spring wire b. Carriage bolt
tooth gear b. Stainless steel c. Stud bolt
b. Heat treatment of the gears c. Hard drawn wire spring d. Machine bolt
c. Hardening of each tooth d. Copper If two principal stress is zero, the state
d. Hunting tooth addition The material for engine radiator is of stress is:
Which of the following services is not usually made of: a. Biaxial
considered to a be a work of a a. Yellow brass b. Mono-axial
machinist b. Silicon brass c. Uniaxial
a. reboring c. Admiralty brass d. Triaxial
b. grinding d. Navy brass It is a symbol that the work surfaces
c. overhauling Axially rectangular groove in a hub an should be machined-finished and
d. honing shaft. usually indicated in the drawing and
Which of the following tools does not a. Keyseat placed on line that represent the
belong to the group b. Cotter pin set surface to be machined.
a. Hermaprodite caliper c. Flute a. f
b. divider d. Setscrew point b. 5
c. Double VEE block The distance form point on one gear to c. 20
d. trammel the corresponding point measured d. F.A.O
The ability of metal to resist being along the base circle. When heat-treated wire is coiled cold,
crushed a. Normal pitch it should be stress relieved fir bending
a. Shearing strength b. Circular pitch stress and after cooling it is heated at
b. Compressive strength c. Axial pitch some:
c. Torsional strength d. Diametral pitch a. 400°F
d. Tensile strength What is the reciprocal of the velocity b. 600°F
A petroleum by-product used as an ratio? c. 700°F
electrode in an electric arc furnace a. Train value d. 500°F
melting operation. b. Ratio factor The amount by which the dedendum in
a. Anthracite coke c. Modular value a given gear/pinion exceeds the
b. Foundry coke d. None of these addendum of its mating pinion/gear.
c. Graphite electrodes Safety feature that must be placed and Also the radial distance between the
d. Bituminous coke maintained at Machine, Blacksmith, top of a tooth and the bottom of the
The riveted joints in ASME Code has as Welding and Foundry Shops. mating tooth space.
design surface compressive stress a. Walkway guide a. Tip relief
______ higher than the design tensile b. Safety notice b. Top land
stress. c. Safety goggles c. Clearance
a. 70 % d. Safety notice in markers / d. Space
b. 60 % boards It is the study of the body’s motion
c. 35 % Which of the following is the contact independent of the forces on the body.
d. 50 % ratio for a good gear design? a. Kinetics
The flux that should be provided in a. 1.5 : 1 b. Dynamics
soldering electrical connection or b. 1 : 1.3 c. Kinematics
commutator wires as its tends to c. 1 : 3 d. Mechanics
corrode the connections. d. 1.2 : 2 The normal density of work space
a. Sal ammoniac Web is a part of a drill and is usually requirement to use in the design of a
b. Zinc chloride thicker ______. work room is ______ cubic feet per
c. Stearin a. Beside the land person.
d. Acid fluxes b. Nearing the shank a. 400
Which of the following is a tolerance c. Close to the future b. 388
where the size of a part may be larger d. At the tip portion c. 353
only, or smaller only, than the given An act of cutting out a piece of metal at d. 424
dimension. a desired shape and size. In pressure vessels, which of the
a. Unilateral a. Broaching following resists internal pressure
b. Lateral b. Blanking through tension?
c. Bilateral c. Slitting a. Shell-type element
d. None of these d. Dinking b. Cam type element
What is the hard drawn (80% What is the direction of the c. Plate-type element
reduction) spring wire made of high predominant surface pattern? d. Spherical type element
carbon steel? a. Smoothness What equation to be used in
a. Oil tempered wire b. Waviness computing the acceleration of the
b. Music wire c. Lay center of a rolling ball with a diameter
c. Tension wire d. Roughness of 8 inches.
d. Chromium wire In pressure vessels, which of the a. 0
In drilling soft materials use cutting following resists internal pressure b. rω2
angle as low as 40 degrees but for through bending? c. ω2/r
extremely hard material up to a. Shell-type element d. V2/r
_________ degrees is recommended. b. Cam type element
a. 80 c. Plate-type element
b. 65 d. Spherical type element
c. 75
In gears, an imaginary circle on which d. smoothness Which of the following is not a function
the lever arm is based in: It is the ratio of the mean diameter of of spring?
a. Base circle coil over the coil diameters. a. Absorbs energy
b. Pitch circle a. Wahl factor b. Source of potential energy
c. Addendum circle b. Spring index c. Measure weight
d. Clearance circle c. Coil ratio d. Measure thickness
A line passing through the pitch point d. Lead scale Normally cast iron contains 2% carbon
that is tangent to both base circles of a Progressive change if position of a or more and silicon in the range of
gear is: body is called: _____%.
a. Pressure line a. Acceleration a. 1 to 3
b. Perpendicular line b. Momentum b. 2 to 4
c. Tangent line c. Motion c. 2 to 3
d. Center line d. Force d. 1 to 6
What is the usual factor of safety for a It is the permissible variation of the Which of the following is an example of
pressure vessel? size. rectilinear translation?
a. 4 a. Tolerance a. Locomotive wheels
b. 1.5 b. Limits b. Rack gear
c. 3 c. Fits c. Piston of an engine
d. 5 d. None of these d. Jack
What type of leather belting should be Which of the following is the type of It is a type of bolt finished all over and
used at an ambient temperature above spring made in the form of dished has usually having coarse threads.
140°F and possible acid liquid coming water? a. Coupling bolt
in contact with the belt. a. Air spring b. Stud bolt
a. Welding machine b. Believing spring c. Machine bolt
b. Combination of oak c. Volute spring d. Automobile bolt
c. Oak tanned d. Motor spring In designing gears for power
d. None of these As the rule of thumb the depth of transmission consider an efficiency of
What is the flexural stress when of a foundation could be about 3.2 to _____ _________ as recommended.
symmetrically cross-section beam times the engine stroke. a. 96% or more
when the vertical shear is maximum. a. 4.20 b. 89% or more
a. Infinity b. 4.0 c. 85% or more
b. Zero c. 3.40 d. 98% or more
c. Maximum d. 3.80 The application of electrical current to
d. minimum Which of the following flanges is the corrosion circuit to counter the
It is a locking device that is used to suitable for low and moderate corrosion reaction is called:
maintain pressure between threads of pressure? a. Cathodic protection
the bolt and nut. a. Ring-flange b. Sacrificial anodes method
a. Gasket b. Lap joint flange c. Chemical corrosion process
b. Lock washer c. Tapered-hub flange d. Galvanic action
c. Lock nuts d. Welding neck type It is the surface finish if micrometer in
d. filler It indicates how many times a volume rms.
Bevel gears subjected to corrosion and of material is heavier than an equal a. 1
lightly loaded are usually made of: volume of water. b. 2
a. Bronze a. Specific gravity c. 3
b. Brass b. Specific volume d. 4
c. Duralumin c. Specific weight A major component of cast steel is:
d. All of these d. Specific density a. Silicon
A good general purpose deoxidizer an It is a good design practice for steel b. Iron
promotes fine grain in steel. lineshafting to consider a limit to the c. Manganese
a. Copper linear deflection of __________ d. Chromium
b. Magnesium inch/foot length maximum. Which of the following does not affect
c. Molybdenum a. 0.050 the tensile strength of steel?
d. Silicon b. 0.010 a. Sulphur
Considering that there is no fit, what is c. 0.020 b. Cobalt
the permissible liberal tolerance in d. 0.060 c. Phosphorous
machining work? In a cutting tool the cutting end can d. Boron
a. + 0.010 also be generally called: Deflection of a beam is:
b. + 0.090 a. End cutting edge a. Proportional to the modulus if
c. + 0.020 b. Nose elasticity and moment of inertia
d. + 0.050 c. Back rake b. Proportional to the load imposed
A tolerance where the size of a part is a d. Side rake and inversely to the length
permitted to be either larger or smaller In general the steel springs are made of squared
than the given dimension. relativity of relative high carbon steel c. Inversely proportional to the
a. Unilateral usually: modulus of elasticity and
b. Lateral a. 5 % moment of inertia
c. Bilateral b. Less than 0.5 % d. Inversely proportional to the
d. None of these c. More than 0.5 % weight imposed time the length
Its is the irregularities of departures d. 7.5 %
from the nominal surface of greater
spacing than roughness?
a. Waviness
b. Roughness
c. Lay
What factors can modify the A research agency handling assistance Avoidance of vibration in equipment of
recommended cutting speed of known to all foundry machine shop and machinery foundations, a mass of
work piece? metallurgical plant operation. weight equal to ______ times the forces
a. Rough cutting of work piece a. MIRDC are needed.
b. Modify the shape of the cutting b. BOI a. 10 to 20
tools c. DOST b. 8 to 15
c. Use correctly shaped cutting d. All of these c. 15 to 20
tools What is the overall length of the spring d. 8 to 10
d. Depth of cut when it is compressed until all What is the following wires with good
It is the circle tangent to the addendum adjacent coils touched?. quality and is used for impact loading?
of the meshing gears. a. Free length a. Hard drawn wire
a. Clearance ratio b. Solid length b. Cold drawn wire
b. Base circle c. Compressed length c. Helical spring wire
c. Addendum circle d. Expansion length d. Chromium – Silicon wire
d. Pitch circle Form experience specify the Nickel-Chromium-Molybdenum steel
Which of the following is the ratio of conventional limit of flywheel designation. SAE:
moment and stress? operations to be at 6000 ft/min for cast a. SAE51XX
a. Strain iron and ________ for cast steel. b. SAE74XX
b. Section modulus a. 7000 c. SAE94XX
c. Contraction b. 8000 d. SAE64XX
d. Passion ratio c. 10000 The modulus of elasticity for metals in
It is a type of bolt distinguished by a d. 12000 compression is usually taken as that
short portion of the shank underneath The characteristics of tool steel sustain in:
the head being square or finned or shocks and major impacts is due to its: a. Tension
ribbed. a. Toughness b. Bearing
a. Coupling bolt b. Stiffness c. Yield
b. Stud bolt c. Ductility d. Ultimate
c. Machine bolt d. Machinability The five principal parts of the shaper
d. Carriage bolt A carbon content in the range of ______ are: the table, tool slide, base, ram and
It is the length of a coil spring under no in steel readily responds to heat ______.
load. treatment. a. Column
a. Compressed length a. 0.35 to 40%C b. Vise
b. Free length b. 0.28 to 0.30%C c. Drive motor
c. Solid length c. 0.18 to 0.25%C d. Apron
d. None of these d. 0.12 to 0.15%C A machine shop equipment that can
What type of formulas that is best It is a cheap variety of bolt made in flatten horizontally, vertically or
applied to a very slender column? small sizes. angular plane.
a. Column formula a. Stud bolt a. Shaper machine
b. Slenderness formulas b. Stove bolt b. Welding machine
c. Moment formula c. Machine bolt c. Drill machine
d. Euler formula d. Coupling bolt d. Power saw
For ordinary steel, the modulus of Treatment process that produces a It is the process of pre-stressing or
elasticity usually falls between ______ residual compressive stress at the over-stressing of a hollow cylindrical
million pounds. surface (which occupy more volume) member beyond the elastic range.
a. 20 to 31 and residual tension on the inside that a. Presstagge
b. 35 to 45 results in considerable increase in the b. Autofrettage
c. 20 to 35 fatigue strength for members on c. Stress relieving
d. 25 to 30 torsion/bending: d. Coutersinking
Moment of inertia is also called: a. Partial quenching Which of the following is the basis for
a. Modulus of elasticity b. Heavy oil quenching ASA fits?
b. Weep strength c. Quenching a. Basic number system
c. Radius of gyration d. Shallow quenching b. Basic hole system
d. None of these What is the type of failure due to c. Basic size system
It is hardening treatment whereby a unstability? d. Unit system
cast metal being heated to a very high a. Buckling A screw that requires positive torque to
temperature then suddenly subjected b. Slenderness ratio lower the load, or to loosen the screw if
to rapid cooling to improve c. Stability it has been turned tight against as
hardenability of wear resistance is d. Euler’s failure resistance.
called: Which of the following gears has the a. Power screw
a. Annealing simplest type of teeth? b. Lock screw
b. Normalizing a. Helical gears c. Self screw
c. Tempering b. Spur gears d. Self locking screw
d. Quenching c. Bevel gears Surface connecting the crest and roots
The conical surface at the starting end d. Worm gears of the screw thread.
of the thread is called: Commonly used/produced a. Lead angle
a. Pitch cone screws/bolts/nuts and for engineering b. Length of engagement
b. Chamfer applications is a ______ series. c. Top land
c. Crest a. UNC d. Flank
d. Flute b. ANSI
c. Withworth
d. UNF
The ideal thickness of the cutter at the What is the rotating member used in d. 500 or greater rms
pitch line for cutting helical gears transmitting power? When radii of both the bearing and the
should be ______ of normal circular a. Shaft journal are the same, then the bearing
pitch. b. Counter shaft is said to be:
a. 3/8 c. Axle a. Fitted bearing
b. ¾ d. Washer b. Clearance bearing
c. ½ The soldering material commonly c. Full bearing
d. 5/16 applied for automobile radiator cores d. Ambiguous bearing
The surface of the gear between the and roofing seams. A tolerance where the size of a part is
fillets of adjacent teeth is called: a. 15/85 % tin and lead permitted to be either large or smaller
a. Bottom land b. 50/50 % tin and lead than the given dimension
b. Flank c. 45/55 % tin and lead a. Bilateral
c. Top land d. 20/80 % tin and lead b. Unilateral
d. Flank of tooth It is the name applied to reciprocating c. Lateral
What is the ratio of the minimum circular motion as that a pendulum. d. None of these
strength of joint to the strength of solid a. Intermittent motion A wire rope that the wires and strand
joint in the pressure vessel? b. Reciprocating motion are twisted in the same direction
a. Efficiency c. Oscillation a. Long lay
b. Relative strength d. Momentum b. Perform
c. Performance factor It is a type of spring where thin flat strip c. Regular lay
d. Joint efficiency would up on itself as a plane spiral, d. Lang lay
If a set of spur gears are made, usually anchored at the inside end What type of key that allows the hub to
installed and lubricated properly, they a. Motor spring move along the shaft but prevents the
normally may be subjected to failure b. Garter rotation of the shaft?
like: c. Volute spring a. Woodruf key
a. Tooth spalling d. Helical spring b. Feather key
b. Tooth peening Which of the following considers the c. Gibbs key
c. Pitting 200 series of bearing? d. Square key
d. Shearing a. Heavy For shafts, the shear due to bending is
What is the minimum length of contact b. Medium a maximum at the neutral plane where
in a tapped hole for cast iron? c. Light the normal stress is:
a. 1.7 D d. All of these a. Minimum
b. 1.5 D Under theories of failure, the value of b. Constant
c. 1.2 D shear stress is how many times that of c. Maximum zero
d. 2.1 D the tensile stress? d. Zero
When the hole is smaller than the a. Four times For involute spline, the type of fits
shaft, it will take force or pressure to b. Half used:
put the cold together. In such case the c. Double a. Close fit
allowance is negative. Which of the d. One-fourth b. Sliding fit
following terms is appropriate for such It is used a coupling, or in addition to c. Press fit
allowance? another couplings where, in case of d. All of these
a. Negative fit of metals overload, there is danger of injury to It is the angle between a tangent to the
b. Interference of metal machine or to material in process pitch helix and plane normal to the axis
c. Positive fits of the shaft a. Shear pin of the screw
d. Intangible fits b. Flange coupling a. Helix angle
What is the large wood screw used to c. Involute serrations b. Lead angle
fasten machinery and equipment? d. King pin c. Tangent angle
a. Lag screw What is the other name given to a line d. Vertical angle
b. Loss screw shaft? Which of the following is the
c. Wood screw a. Countershaft recommended initial tension of the
d. Cross screw b. Main shaft belt?
It is the phenomenon occurring when c. Long shaft a. 75 lb/in of width
two touching surfaces have a high d. Head shaft b. 73 lb/in of width
contact pressure and when these When tested in compression, ductile c. 71 lb/in of width
surfaces have minute motion. material usually exhibit _____ d. 80 lb/in of width
a. Prestressing characteristics up to the yield strength
b. Fretting as they do when tested in tension What is the line that passes through
c. Friction a. The same the centers of the bearing and the
d. Carving b. More than journals
For machinery shafts, the permissible c. Less than a. Line of action
deflection is approximately: d. Approximately the same b. Line of centers
a. 0.02 in./ft Which of the following is the c. Line of symmetry
b. 0.03 in./ft approximate density of a fat rubber d. Tangent line
c. 0.01 in./ft belt? What friction devices that are used to
d. 0.05 in./ft a. 0.055 lb/in3 connect shafts?
What do you call the system that have b. 0.0135 lb/in3 a. Clutches
finite values of principal stresses? c. 0.045 lb/in3 b. Spring
a. Triaxial d. 0.0465 lb/in3 c. Brakes
b. Uniaxial Which of the following is the surface d. Holders
c. Mono-axial finish of heavy cuts of coarse feed?
d. Biaxial a. 200 rms
b. 400 rms
c. 80 rms
The regular materials for wire ropes are For wrought steel in its commonly met Which of the following is a particular
made of: commercial forms, it is often assumed bolt used in aeronautical equipment
a. Chromium that the average endurance limit for an a. UNC
b. Wrought iron average Su (50% survival) with the b. UNEF
c. Cast steel Brinell Hardness is limited to: c. UNF
d. High-carbon iron a. 500 d. NC
To avoid excessive wear rate the b. 400 A coupling that transmit power via the
recommended limiting pressure for 6 X c. 240 frictional forces induced by pulling the
19 rope is _____ for manganese cast d. 450 flange toward each other over slotted
steel It is the process that cold works a tapered sleeves
a. 2500 psi limited amount of material, thus giving a. Flange coupling
b. 2000 psi a higher strength, and it leaves a b. Ribbed compression coupling
c. 3000 psi surface compressive stress c. Rigid coupling
d. 2300 psi a. Surface finishing d. Flanged compression coupling
Which of the following ropes is used for b. Tensioning An old name for an unfinished through
lines, hawsers, overhead cranes, and c. Surfacing bolt comes with a square
hoists d. Surface rolling a. Coupling bolt
a. 6 X 37 IWRC What is the usual density of the leather b. Stud bolt
b. 6 X 35 IWRC belt? c. Machine bolt
c. 6 X 25 IWRC a. 0.035 lb/in3 d. Automobile bolt
d. 7 X 26 IWRC b. 0.0135 lb/in3 Which of the following is the measure
What is the usual recommended speed c. 0.025 lb/in3 of torsional stress?
for fabric belts? d. 0.0465 lb/in3 a. Accuracy
a. 4000 to 5000 fpm What are the principal parts of a b. Stiffness
b. 3000 to 4000 fpm Journal Bearing? c. Rigidity
c. 2000 to 3000 fpm a. Bearing and journal d. Precision
d. 2000 and more fpm b. Shaft and babbit Which of the following is used for
The breaking strength of oak-tanned c. Clearance and fitted permanent fits and similar to involute
belting varies from 3 to more than: d. Shaft and cylinder splines except that the pressure angle
a. 5 ksi Which of the following is not a type of is 14.5o?
b. 6 ksi ball bearing? a. Separation load
c. 7 ksi a. Shallow groove ball bearing b. Spline shaft
d. 9 ksi b. Filling-slot ball bearing c. Stub serrations
A bearing in which the radii of the c. Self-aligning ball bearing d. Involute serrations
journal and the nearing are the same d. Deep-groove ball bearing What is the recommended coefficient
a. Fitted nearing A key with one several patented of fluctuation of flywheels for
b. Full bearing methods of keying is driven or pressed punching, shearing, pressing machine?
c. Partial bearing into a hole that is small enough to a. 0.005 – 0.1
d. Clearance bearing close the slit, assembled in radial b. 0.007 – 0.01
On high speed centrifugal blowers, it direction c. 0.03 – 0.05
has been observed that the arc of a. Fit key d. 0.01 – 0.03
contact is reduced from 180o at rest to b. Roll pin Which of the following bolts is
_____ in motion c. Saddle key recommended for general use?
a. 100o d. Pin key a. UNC
b. 90o It is the distance in inches a screw b. UNEF
c. 95o thread (a helix) advances axially in one c. UNF
d. 110o turn d. NC
It is a type of coil where the helical coil a. Pitch An old rule of thumb for transmission
is wrapped into a circle forming an b. Mean pitch shafting is that the deflection should
annular ring c. Lead not exceed _____ of length between
a. Volute spring d. Circular pitch supports
b. Hair spring What is the minimum number of teeth a. 0.01 in. per foot
c. Motor spring on a smaller sprocket for low speed? b. 0.08 in. per foot
d. Garter spring a. 12 c. 0.02 in. per foot
It is suggested that the design factor on b. 21 d. 0.05 in. per foot
the yield strength be about 1.5 for the c. 17 A type of roller bearing in which the
smooth load, about 2 to 2.25 for minor d. 14 balls are assembled by the eccentric
shock loading, and up to ______ for Two shafts at right angles to each other displacement of the inner ring
severe shock loads, especially when may be connected by what a. Shallow groove ball bearing
the loading reverse during operation arrangement? b. Filling-slot ball bearing
a. 4.5 a. Half turn c. Self-aligning ball bearing
b. 3.5 b. Quarter turn d. Deep-groove ball bearing
c. 3.0 c. ¾ run It is a screw fastening with a nut on it
d. 4.0 d. One turn a. bolt
Wire ropes are made from cold-drawn The recommended net belt pull for b. U – bolt
with _____ or more teeth rubber belt is: c. Rivet
a. 21 a. 11.34 lb/ply per inch of width d. Screw
b. 23 b. 13.75 lb/ply per inch of width
c. 25 c. 16.35 lb/ply per inch of width
d. 27 d. 20.34 lb/ply per inch of width
The internal stresses that exist in any What is the minimum number of teeth Under the theories of failure, for static
part of the material that is subjected to on a smaller sprocket for moderate loading of ductile material, the design
temperature and not acted upon by an speed? stress is:
external load a. 17 a. Yield stress / factor of safety
a. Residual stress b. 21 b. Ultimate stress / factor of safety
b. Form stress c. 12 c. Ultimate stress / proportional
c. Superposed stress d. 14 limit
d. Control stress At higher temperature, oil oxidizes d. Yield point / proportional limit
What is the approximate length-to- more rapidly above: What is the limiting torsional deflection
diameter ration of hydrodynamic a. 120oF for machinery shafts, if the criteria of
bearings? b. 200oF limiting torsional deflection vary from
a. 1 c. 140oF 0.08o per foot of length
b. 4 d. 160oF a. 1o
c. 3 For non-metallic gaskets, it has been b. 2.5o
d. 2 found that they should have a certain c. 2o
Which of the following is considered minimum amount of compression as d. 3.5o
advantageous for bearing metals? _____ for a certain cork gasket The tension in the belt due to
a. comformability a. 62% centrifugal force increasing rapidly
b. compatibility b. 86% above about:
c. embeddability c. 68% a. 2500 fpm
d. All of these d. 76% b. 3000 fpm
It is the difference in the radii of the A key that allows the hub to move c. 3500 fpm
bearing and the journal along the shaft but prevents the d. 4000 fpm
a. Even clearance rotation of the shaft The theory of mechanics of materials
b. Clearance ratio a. Woodruff key shows that the results from the
c. Fit clearance b. Gibs key octahedral shear stress theory and
d. Radial clearance c. Feather key those from the maximum distortion-
The minimum value of numerical d. Square key energy theory are:
combined shock and fatigue factor to What is the usual minimum number of a. The same
be applied in every case to the teeth on a smaller sprocket for high b. Less than
computed bending moment of the speed? c. More than
shaft is : a. 21 d. Not related
a. 2.0 b. 24 What is the recommended speed for
b. 1.75 c. 12 leather belts?
c. 1.5 d. 14 a. 6000 to 7000 fpm
d. 1.3 When the line of action of the load, b. 5000 to 6000 fpm
A fastening which has no nut and turns bisects the arc of partial bearing, the c. 7000 to 8000 fpm
in to a threaded hole bearing is said to be: d. 4500 to 5600 fpm
a. Bolt a. Eccentrically loaded What type of fits used for involute
b. Fastener b. Fully loaded spline?
c. Rivet c. Centrally loaded a. Close fit
d. Screw d. Partially loaded b. Press fit
Which of the following indicates the The speed at which the center of mass c. Sliding fit
degree of concentration? will be equal the deflecting forces on d. All of these
a. Power factor the shaft; the shaft with its attached A wire rope that the wires and strands
b. Service factor bodies will then vibrate violently, since are twisted in the opposite direction
c. Stress factor the centrifugal force changes its a. Long lay
d. Stress concentration factor direction as the shaft turns in: b. Perform
A toothed wheel whose tooth elements a. Nominal shaft c. Regular lay
are straight and parallel to the shaft b. Critical shaft d. Lang lay
axis or used to transmit motion and c. Relative speed A typical hub length fall between
power between parallel shafts d. Mean speed a. 1.25D to 2.5D
a. Helical gear It is the stress or load induced by the b. 1.3D to 3.4D
b. Spur gear tightening operation c. 1.25D to 4.0D
c. Worm gear a. Initial stress d. D to 7.0D
d. Bevel gear b. Initial tension If the ends are joined by wire lacing
It is the distance measure axially from c. Residual stress with machine, the usual efficiency of
a point on one thread to the d. None of these joint is:
corresponding point on an adjacent What type of bolt usually used for high- a. 100%
thread pressure pipe flanges, cylinder head b. 75%
a. Axial pitch studs etc. c. 85%
b. Z – pitch a. UNC d. 88%
c. Lead b. UNF What is the difference in radii of the
d. Lead angle c. UNEF bearing and journal?
It is the ratio of the length of the d. 8 UN a. Even clearance
column and the radius of gyration of For minimum quietness, use sprockets b. Clearance ratio
the cross-sectional area about a with _____ or more teeth c. Odd clearance
centroidal axis a. 21 d. Radial clearance
a. Contact ratio b. 23
b. Slenderness ratio c. 25
c. Centroidal ratio d. 27
d. Column ratio
What is the minimum suggested design Fatigue strength is increased by What is the maximum shaft angle for a
factor of wire ropes for miscellaneous repeated loads just below the normal single Hooke’s couplings?
hoisting equipment is: fatigue limit, followed by small step by a. 10o
a. 2 step increase of the loading b. 17o
b. 3 a. Coaxing c. 15o
c. 5 b. Triaxing d. 20o
d. 4 c. Mixing The operating temperature of oil films
Bevel gears of sizes 5 in. to 15 in. d. Relieving in the bearing must approximately:
should not be lift or depress more than Which of the following has been a. 140oF to 150oF
_____, as Gleason statement considered as general purpose rope? b. 140oF to 160oF
a. 0.004 a. 6 X 19 IWRC c. 120oF to 190oF
b. 0.003 b. 7 X 25 IWRC d. 120oF to 190oF
c. 0.002 c. 7 X 25 IWRC Type of bolt commonly used in the
d. 0.001 d. 6 X 9 IWRC construction that is threaded in both
Which of the following is the most Experience suggests that the most ends
dominant cause (approximately 80%) economical designs are obtained for a a. Acme thread bolts
of machine failures? belt speed of: b. Hex bolt
a. Torsion a. 6000 to 7500 fpm c. Square bolt
b. Negligence b. 3000 to 5000 fpm d. Stud bolt
c. Fatigue failures c. 3500 to 4700 fpm The resultant of a pair of equal forces
d. Compression d. 5000 to 1000 fpm but opposite in direction called _____
For thrust bearing, the speed at To avoid excessive wear rate the a. Concurrent
moderate operating condition is: recommended limiting pressure for 6 X b. Couple
a. 50 < Vm > 200 fpm 19 rope is _____ for cast steel c. Non-concurrent
b. 50 < Vm > 250 fpm a. 700 psi d. Resultant
c. 50 < Vm > 220 fpm b. 900 psi What is the recommended coefficient
d. 50 < Vm > 250 fpm c. 1000 psi of fluctuation of flywheels for
What is the range of the endurance d. 1200 psi punching, shearing, pressing machine
ratio or Czaud quotes values for steel? A fit generally used on those is:
a. 0.23 to 0.65 dimensions involved in a fit; such as a. 0.005 – 0.1
b. 0.34 to 0.87 pin in a hole b. 0.002 – 0.07
c. 0.63 to 0.93 a. Unilateral c. 0.03 – 0.05
d. 0.34 to 0.45 b. Lateral d. 0.01 – 0.03
If two intersecting shafts are to be belt c. Bilateral A bolt for general application that
connected _____ guide pulleys are to d. None of these posses a stronger thread is a type of
be used It is the diameter of the imaginary _____ screw
a. 1 cylinder that bounds the crest of an a. BUN
b. 2 external thread and the roots of an b. UNC
c. 3 internal thread c. UNEF
d. 4 a. Mean diameter d. WOOD
A coupling used for absorbing some b. Root diameter The stress that causes the material to
shock and vibration that may appear c. Stress diameter shorten
on one shaft and of preventing the d. Major diameter a. Bearing
occurrences of reversed stresses For transmission shafts the allowable b. Compressive
caused by the shaft deflecting at the deflection is 1 degree in a length of c. Shear
coupling preventing at the coupling _____ diameters d. Tensile
a. Rigid coupling a. 20 The reciprocal of a diametral pitch or
b. Flange coupling b. 25 the ratio of the pitch diameter to the
c. Flexible coupling c. 30 number of teeth
d. None of these d. 40 a. clearance
What is the other name for Kennedy Which of the following ropes is used for b. involute
key? haulage, rigging, guard rails c. lead
a. Tangential key a. 6 X 35 IWRC d. module
b. Woodruf key b. 6 X 15 IWRC All stainless steel type is SAE
c. Saddle key c. 7 X 8 IWRC designation except:
d. Rollpin d. 7 X 7 IWRC a. 92XX
Which of the following is frequently Which of the following considers the b. 300XX
used bolt in automotive and aircraft 300 series of bearing? c. 304XX
industries a. Heavy d. 515XX
a. UNC b. Medium What do impact test determine?
b. UNEF c. Light a. Creep strength
c. UNF d. All of these b. Hardness
d. NC What is the other name given to short c. Toughness
It is relatively finely spaced shafts on machines? d. Yield strength
irregularities of the surfaces a. Spindles Cutting lubricants used in drilling,
a. Smoothness b. Head shafts reaming and tapping for hard sports in
b. Waviness c. Core shafts cast iron
c. Lay d. All of these a. Dry
d. Roughness b. Kerosene
c. Soda water
d. Turpentine
Which of the following welds have d. Tightness d. Willan’s line
been considered as resistance weld What device on a lathe machine used Which of the following gasket material
which is usually round in the same for carrying the revolving spindle? which should avoid hot liquid/steam
dorm as the electrodes that press the a. Head stock applications?
sheets together b. Header a. Asbestos fiber
a. Edge joints c. Head suction b. Nylon fiber
b. Spot welds d. None of these c. Rubberized
c. CIG welds The force that can be combined or d. Wool
d. TIG welds called _____ component forces The kinetics chain in which one link is
SAE 51XXX belongs to the _____ steel a. Different considered fixed for purpose of
family b. Helical analysis but motion is possible on
a. Carbon c. Opposite other links
b. Chromium d. Parallel a. Belting
c. Manganese Gears are manufactured usually in the b. Frame
d. Nickel following processes: milling, c. Mechanism
It is a steel with SAE specification 13XX generating, shaving, grinding and: d. Sprocket chain
a. Chromium a. Blanking It is the grasping of an outside
b. Manganese b. Drinking workpiece in a chunk or a jawed device
c. Molybdenum c. Heat treatment in a lathe
d. Nickel d. Molding a. clucking
Which of the following is nit Which of the following bolts provided b. clamping
recommended for use in a driving with a hole at one end instead of usual c. chucking
speed exceeding 2000 ft/min head d. clamshelling
a. Flat leather belt a. Stud bolt The most known lubricants being
b. Herrinbone gear b. Eye bolt utilized in whatever category of load
c. Silent sprocket c. Machine bolt and speed are oil, air, grease and dry
d. V-belt d. Stove bolt lubricants like:
Property, which enables a material to It is while metal with good oxidation a. Bronze
be drawn into a wire and corrosion resistance. This has also b. Graphite
a. Ductility good electrical magnetic properties c. Lead
b. Elasticity a. Aluminum d. Silicon
c. Plasticity b. Copper It imparts the ductility, toughness, and
d. Utility c. Nickel plasticity of steel
It is friction of wheel inclination from d. Titanium a. Annealing
the vertical position A type of chisel used in cutting of b. Materializing
a. Camber keyways, square corners or slots c. Quenching
b. Toe-in a. Cape d. Tempering
c. Caster b. Diamond head Which of the following types of wood is
d. King pin inclination c. Flat usually used in making wood pattern in
A kind of braking system such that if d. Round the foundry?
the band wraps partly around the brake Which of the following is a machine a. Dried sap wood
drum, and the braking action is which takes large quantities of raw or b. Hard wood
obtained by pulling the band tight into finished materials and binds them with c. Kiln dried wood
the wheel a rope or metal straps or wires into a d. Scrap wood
a. Block brake large package It is the process used to form shallow,
b. Clutch a. Bacher round, raised recessed troughs of
c. Band brake b. Bending machine uniform width in a straight curved or
d. Centrifugal brake c. Baler circular form
The general accepted limit of diamond d. Automatic screw machine a. Hemming
wheel speed should be in the range of Which of the following ropes is b. Beading
_____ fpm galvanized and consists of 6 strands, 7 c. Embossing
a. 1000/2000 wires each, and a hemp core? d. Buldging
b. 2500/3500 a. Reverse lay rope In a _____ design, the lead of a single
c. 3000/4000 b. Guy rope thread is equal to the pitch
d. 5000/6000 c. Lang lay rope a. Bevel gear
It is a chromium steel tape in AISI-SAE d. Regular rope b. Bolt
designation How do you call the forces not lie on c. Helical gear
a. 10XX the same plane? d. Hypoid gear
b. 25XX a. Component Which of the following is a mechanical
c. 50XX b. Composition of forces linkage or mechanism that can turn
d. 40XX c. Non-coplanar about a center or rotation
The lateral strain in axial tension d. Resolution a. Oscillation
members can be calculated by: It is a molybdenum steel-type in AISI- b. Crank
a. Deformation SAE designation c. Coupler
b. Hooke’s law a. 44 XX d. Drag link
c. Poission’s ratio b. 45 XX The arc is covered with a welding
d. Willan’s line c. 50 XX composition, and bare electrode wire
Too much _____ in a flat belt operation d. 51 XX is fed automatically
tend to cause excessive wear slippage The ratio of lateral strain to longitudinal a. Resistance welding
and may burn the belt strain b. Induction welding
a. Play a. Deformation c. Submerged welding
b. Slack b. Modulus of elasticity d. Spot welding
c. stiffness c. Poission’s ratio
Which of the following clutches that c. Differential screw The most common useful tools to
has a disadvantage of heavier rotating d. Variable screw measure diameter in machine shop
masses It is a low cost bearing used world wide operation but normally and always
a. Multiple disc clutch for automobile or low horsepower used with steel scale for measurement
b. Cone clutch motor application. It is made of thin a. Caliper
c. Disc clutch coating of over flat metal strip b. Micrometer
d. Twin clutching a. Babbitt c. Protractor
Find the polar section modulus of a b. Cadmium brass d. Vernier
steel shafting with “D” as the diameter c. Lead It is gear commonly used in parallel
a. πD3/16 d. Thin shaft transmission especially when a
b. πD3/32 All forces in the same plane are called smooth continuous action is essential
c. πD3/32 a. coplanar as in high speed drives up to 12,000
d. πD3/16 b. couple fpm
What is the carbon content range of c. parallel a. Bevel gear
SAE 4140 chrome-moly steel after heat d. resultant b. Helical gear
treatment? A welding which consists of short c. Herringbone ear
a. 0.30/0.45 lengths (2 – 3 in. long) of welds with d. Spur gear
b. 0.38/0.43 space between as 6 inches on centers The distance between the center of
c. 0.38/0.45 a. Intermittent weld oscillation and the point of suspension
d. 0.30/0.50 b. Spot weld is called:
Cutting lubricant used in drilling c. MIG weld a. Fix axis
reaming, and tapping for brass and d. TIG weld b. Center of gravity
bronze Sound travels fastest in: c. Center of percussion
a. Dry a. Air at 0oF and 1 atmosphere d. Radius of oscillation
b. Soda water b. Air at 70oF and 1 atmosphere The effective face width of a helical
c. Soluble oil c. Air at 78oF and 0 lbf / in2 gear divided by the axial pitch. This is
d. Turpentine d. Steel at 70oF sometimes called face overlap
The maximum recommended ideal This is an alloy in bronze casting that a. Angle overlap
number of teeth to use for bigger assists lubrication and in itself a b. Axial overlap
sprocket is: lubricant c. Contact overlap
a. 120 a. Lead d. Helical overlap
b. 127 b. Manganese The process of removing excess metal
c. 132 c. Phosphorus from the edge of a strip to make it
d. 143 d. Tin suitable for drawing without wrinkling
The _____ is one of the rigid members / A pair of equal and opposite ( not or to obtain final complicated shape
bodies joined together to form a kinetic collinear) forces that tend to cause a which was not directly possible by
chain rotation of a body blanking
a. coplanar a. centroids a. Lancing
b. frame b. couple b. Slugging
c. link c. equilibrium c. Notching
d. machine d. vector d. Trimming
What is the special bearing used with Stress that resist being pulled apart It is a plane between mating teeth of
high deflection? a. Compressive the amount of which a tooth space
a. Babbit b. Shear exceed the thickness of an engaging
b. Ball c. Tensile tooth is called:
c. Roller d. Torsional a. backlash
d. Self aligning Prepared tool bit will now consists of b. clearance
For mass production of casting it is face, nose and: c. pitting
generally cheaper to use _____ pattern a. Cutting tool d. space
for longer life b. Shank For longer sprocket chain life the
a. Aluminum c. Sharp tool speed range of _____ fpm is
b. Brass d. Tool edge recommended
c. Metal The yield strength of common yellow a. 1200-1400
d. Wooden brass ( 70% Cu, 30% Zn) can be b. 1500-1600
It is abundantly used worldwide as increased by: c. 1800-2000
coating on top of the plate of a. Annealing d. 2000-2100
automobiles b. Chill casting As a rule the center to center distance
a. Babbit c. Cold working between sprocket should not be less
b. Lead d. Heat treatment than ____ times the diameter of the
c. Manganese Plane of rotation is defined as plane bigger sprocket and not less than 30
d. Tin perpendicular to a times the pitch nor more than about 50
The brake capacity to absorb energy is a. Gear axis times to pitch
known as: b. Gear ratio a. 1.5
a. Energy c. Normal plane b. 2
b. Power d. Pitch diameter c. 2.5
c. Resistance brake Which of the following can be a d. 3
d. Braking torque concurrent? The part of machine that absorbs the
What type of compound screw which a. Collinear energy delivered by a sharp force a
produces a motion equal to the b. Couple blow
difference in motion between the two c. Parallel a. Spring
component screws d. All of these b. Anvil
a. Machine screw c. Brakes
b. Tandem screw d. Flywheel
The progressive change in position of Which of the following is the process of A welding operation that use hot flame
_____ is called motion removing coarse scratches or tool and metal rod
a. Component marks? a. Gas welding
b. Couple a. Polishing b. Arc welding
c. Link b. Buffing c. Resistance welding
d. Mass c. Honing d. Automatic welding
The total frictional energy that is stored d. Lapping In impact force introduced to cause
in the brake parts principally in the Ability of a material to absorb strain the metal to flow in a shaped mold
drum or disk is approximately: energy and will return to its original according to the shape to dies made
a. 56% up state a. Hardness
b. 90% up a. Creep b. Spinning
c. 86% up b. Fatigue strength c. Swaging
d. 75% up c. Hardness d. Toughness
It is a large lathe used for turning and d. Resilience Basic size is the same as design size if
boring cannons What is other term applied to dynamic there is no:
a. Gun lathe seals? a. allowance
b. Engine lathe a. Gasket b. clearance
c. Cannon lathe b. Packing c. limits
d. Turret lathe c. Seal d. tolerance
Maximum moment formula for beam d. Shield Forces of equal in magnitude but
simply supported at both ends and Arc produced by two tungsten opposite in direction are parallel
subject to a load uniformly distributed electrodes into which a jet of hydrogen called:
over is length is directed. a. Acceleration
a. wL/2 a. Atomic hydrogen welding b. Coplanar
b. wL2/8 b. Electro-beam welding c. Couple
c. wL2/16 c. Hydrogen bomb d. Non-coplanar
d. wL/12 d. Hydrogen lancing Which type of hardening will work to
Forces that meet at a common point The resultant cross-sectional area of some extent in all metals?
are called the tensile test specimen divided by a. Annealing
a. Co-linear the specimen original area is called: b. Austenitizing
b. Concurrent a. Charpy test c. Martempering
c. Coplanar b. % elongation d. Work hardening
d. Couple c. Impact test If the velocity is variable and
Composition of forces is at the _____ of d. Izod test regularly/constantly increasing the rate
two or more forces Which of the following that describes of change is called:
a. combination the same material properties all over / a. Acceleration
b. opposition direction and at any particular point is b. Constant work
c. resultant a structural member? c. Moment
d. summary a. Heterogenous d. Motion
What tool(s) will be used in making b. Homogenous A liquid metal at room temperature
wood pattern in the foundry shop? c. Isentropic a. Aluminum
a. Band saw d. Isotropic b. Mercury
b. Drill machine Flat belt that is too tight will induce c. Zinc
c. Hammer strain on the bearing and belt _____ d. Zirconium
d. Saw and chisel a. Life will be shortened 10 - Type of bolt commonly used in the
Stiffness is the material’s ability to b. Result to uneconomical construction that is threaded in both
_____ deformation under stress operation ends
a. Non-planar c. Suffer/shatter a. Acme thread bolts
b. Planar d. Will be sheared/cut b. Hex bolt
c. Resist Circular pitch is measured along the c. Square bolt
d. Stafer ______ in the circular gear d. Stud bolt
Strain or _____ is a change in geometry a. Circle The resultant of a pair of equal forces
/ shape of the body due to action of a b. Line of action but opposite in direction called _____
force on it c. Pitch center a. Concurrent
a. Bending stress d. Pitch diameter b. Couple
b. Deformation The recommend means of supporting c. Non-concurrent
c. Shear stress the chunk during the mounting d. Resultant
d. Stress procedure to the lathe spindle is to What is the recommended coefficient
What operation generally carried out to use: of fluctuation of flywheels for
divide the parent coiled sheet into a. Crane punching, shearing, pressing machine
narrower coils? b. Jack is:
a. Slotting c. Overhead a. 0.005 – 0.1
b. Squeezing d. Ratchet b. 0.002 – 0.07
c. Squaring The helical and herringbone gear teeth c. 0.03 – 0.05
d. Slitting cut after heat treatment should have a d. 0.01 – 0.03
Which of the following bearing is used hardness in the range of 210/300BHN. A bolt for general application that
for low load and less expensive The pinion gear teeth hardness on the posses a stronger thread is a type of
production other hand, ideally/normally should be _____ screw
a. Babbit at _____ BHN a. BUN
b. Ball bearing a. 250/320 b. UNC
c. Roller bearing b. 350/380 c. UNEF
d. Self aligning c. 400/345 d. WOOD
d. 340/350
The stress that causes the material to A kind of braking system such that if d. Round
shorten the band wraps partly around the brake Which of the following is a machine
a. Bearing drum, and the braking action is which takes large quantities of raw or
b. Compressive obtained by pulling the band tight into finished materials and binds them with
c. Shear the wheel a rope or metal straps or wires into a
d. Tensile a. Block brake large package
The reciprocal of a diametral pitch or b. Clutch a. Bacher
the ratio of the pitch diameter to the c. Band brake b. Bending machine
number of teeth d. Centrifugal brake c. Baler
a. clearance The general accepted limit of diamond d. Automatic screw machine
b. involute wheel speed should be in the range of Which of the following ropes is
c. lead _____ fpm galvanized and consists of 6 strands, 7
d. module a. 1000/2000 wires each, and a hemp core?
All stainless steel type is SAE b. 2500/3500 a. Reverse lay rope
designation except: c. 3000/4000 b. Guy rope
a. 92XX d. 5000/6000 c. Lang lay rope
b. 300XX It is a chromium steel tape in AISI-SAE d. Regular rope
c. 304XX designation How do you call the forces not lie on
d. 515XX a. 10XX the same plane?
What do impact test determine? b. 25XX a. Component
a. Creep strength c. 50XX b. Composition of forces
b. Hardness d. 40XX c. Non-coplanar
c. Toughness The lateral strain in axial tension d. Resolution
d. Yield strength members can be calculated by: It is a molybdenum steel-type in AISI-
Cutting lubricants used in drilling, a. Deformation SAE designation
reaming and tapping for hard sports in b. Hooke’s law a. 44 XX
cast iron c. Poission’s ratio b. 45 XX
a. Dry d. Willan’s line c. 50 XX
b. Kerosene Too much _____ in a flat belt operation d. 51 XX
c. Soda water tend to cause excessive wear slippage The ratio of lateral strain to longitudinal
d. Turpentine and may burn the belt strain
Which of the following welds have a. Play a. Deformation
been considered as resistance weld b. Slack b. Modulus of elasticity
which is usually round in the same c. stiffness c. Poission’s ratio
dorm as the electrodes that press the d. Tightness d. Willan’s line
sheets together What device on a lathe machine used Which of the following gasket material
a. Edge joints for carrying the revolving spindle? which should avoid hot liquid/steam
b. Spot welds a. Head stock applications?
c. CIG welds b. Header a. Asbestos fiber
d. TIG welds c. Head suction b. Nylon fiber
SAE 51XXX belongs to the _____ steel d. None of these c. Rubberized
family The force that can be combined or d. Wool
a. Carbon called _____ component forces The kinetics chain in which one link is
b. Chromium a. Different considered fixed for purpose of
c. Manganese b. Helical analysis but motion is possible on
d. Nickel c. Opposite other links
d. Parallel a. Belting
It is a steel with SAE specification 13XX Gears are manufactured usually in the b. Frame
a. Chromium following processes: milling, c. Mechanism
b. Manganese generating, shaving, grinding and: d. Sprocket chain
c. Molybdenum a. Blanking It is the grasping of an outside
d. Nickel b. Drinking workpiece in a chunk or a jawed device
Which of the following is nit c. Heat treatment in a lathe
recommended for use in a driving d. Molding a. clucking
speed exceeding 2000 ft/min Which of the following bolts provided b. clamping
a. Flat leather belt with a hole at one end instead of usual c. chucking
b. Herrinbone gear head d. clamshelling
c. Silent sprocket a. Stud bolt The most known lubricants being
d. V-belt b. Eye bolt utilized in whatever category of load
Property, which enables a material to c. Machine bolt and speed are oil, air, grease and dry
be drawn into a wire d. Stove bolt lubricants like:
a. Ductility It is while metal with good oxidation a. Bronze
b. Elasticity and corrosion resistance. This has also b. Graphite
c. Plasticity good electrical magnetic properties c. Lead
d. Utility a. Aluminum d. Silicon
It is friction of wheel inclination from b. Copper It imparts the ductility, toughness, and
the vertical position c. Nickel plasticity of steel
a. Camber d. Titanium a. Annealing
b. Toe-in A type of chisel used in cutting of b. Materializing
c. Caster keyways, square corners or slots c. Quenching
d. King pin inclination a. Cape d. Tempering
b. Diamond head
c. Flat
Which of the following types of wood is The _____ is one of the rigid members / A pair of equal and opposite ( not
usually used in making wood pattern in bodies joined together to form a kinetic collinear) forces that tend to cause a
the foundry? chain rotation of a body
a. Dried sap wood a. coplanar a. centroids
b. Hard wood b. frame b. couple
c. Kiln dried wood c. link c. equilibrium
d. Scrap wood d. machine d. vector
It is the process used to form shallow, What is the special bearing used with Stress that resist being pulled apart
round, raised recessed troughs of high deflection? a. Compressive
uniform width in a straight curved or a. Babbit b. Shear
circular form b. Ball c. Tensile
a. Hemming c. Roller d. Torsional
b. Beading d. Self aligning Prepared tool bit will now consists of
c. Embossing For mass production of casting it is face, nose and:
d. Buldging generally cheaper to use _____ pattern a. Cutting tool
In a _____ design, the lead of a single for longer life b. Shank
thread is equal to the pitch a. Aluminum c. Sharp tool
a. Bevel gear b. Brass d. Tool edge
b. Bolt c. Metal The yield strength of common yellow
c. Helical gear d. Wooden brass ( 70% Cu, 30% Zn) can be
d. Hypoid gear It is abundantly used worldwide as increased by:
Which of the following is a mechanical coating on top of the plate of a. Annealing
linkage or mechanism that can turn automobiles b. Chill casting
about a center or rotation a. Babbit c. Cold working
a. Oscillation b. Lead d. Heat treatment
b. Crank c. Manganese Plane of rotation is defined as plane
c. Coupler d. Tin perpendicular to a
d. Drag link The brake capacity to absorb energy is a. Gear axis
The arc is covered with a welding known as: b. Gear ratio
composition, and bare electrode wire a. Energy c. Normal plane
is fed automatically b. Power d. Pitch diameter
a. Resistance welding c. Resistance brake Which of the following can be a
b. Induction welding d. Braking torque concurrent?
c. Submerged welding What type of compound screw which a. Collinear
d. Spot welding produces a motion equal to the b. Couple
Which of the following clutches that difference in motion between the two c. Parallel
has a disadvantage of heavier rotating component screws d. All of these
masses a. Machine screw The most common useful tools to
a. Multiple disc clutch b. Tandem screw measure diameter in machine shop
b. Cone clutch c. Differential screw operation but normally and always
c. Disc clutch d. Variable screw used with steel scale for measurement
d. Twin clutchingthe It is a low cost bearing used world wide a. Caliper
Find the polar section modulus of a for automobile or low horsepower b. Micrometer
steel shafting with “D” as the diameter motor application. It is made of thin c. Protractor
a. πD3/16 coating of over flat metal strip d. Vernier
b. πD3/32 a. Babbitt It is gear commonly used in parallel
c. πD3/32 b. Cadmium brass shaft transmission especially when a
d. πD3/16 c. Lead smooth continuous action is essential
What is the carbon content range of d. Thin as in high speed drives up to 12,000
SAE 4140 chrome-moly steel after heat All forces in the same plane are called fpm
treatment? a. coplanar a. Bevel gear
a. 0.30/0.45 b. couple b. Helical gear
b. 0.38/0.43 c. parallel c. Herringbone ear
c. 0.38/0.45 d. resultant d. Spur gear
d. 0.30/0.50 A welding which consists of short The distance between the center of
Cutting lubricant used in drilling lengths (2 – 3 in. long) of welds with oscillation and the point of suspension
reaming, and tapping for brass and space between as 6 inches on centers is called:
bronze a. Intermittent weld a. Fix axis
a. Dry b. Spot weld b. Center of gravity
b. Soda water c. MIG weld c. Center of percussion
c. Soluble oil d. TIG weld d. Radius of oscillation
d. Turpentine Sound travels fastest in: The effective face width of a helical
The maximum recommended ideal a. Air at 0oF and 1 atmosphere gear divided by the axial pitch. This is
number of teeth to use for bigger b. Air at 70oF and 1 atmosphere sometimes called face overlap
sprocket is: c. Air at 78oF and 0 lbf / in2 a. Angle overlap
a. 120 d. Steel at 70oF b. Axial overlap
b. 127 This is an alloy in bronze casting that c. Contact overlap
c. 132 assists lubrication and in itself a d. Helical overlap
d. 143 lubricant
a. Lead
b. Manganese
c. Phosphorus
d. Tin
The process of removing excess metal Forces that meet at a common point The resultant cross-sectional area of
from the edge of a strip to make it are called the tensile test specimen divided by
suitable for drawing without wrinkling a. Co-linear the specimen original area is called:
or to obtain final complicated shape b. Concurrent a. Charpy test
which was not directly possible by c. Coplanar b. % elongation
blanking d. Couple c. Impact test
a. Lancing Composition of forces is at the _____ of d. Izod test
b. Slugging two or more forces Which of the following that describes
c. Notching a. combination the same material properties all over /
d. Trimming b. opposition direction and at any particular point is
It is a plane between mating teeth of c. resultant a structural member?
the amount of which a tooth space d. summary a. Heterogenous
exceed the thickness of an engaging What tool(s) will be used in making b. Homogenous
tooth is called: wood pattern in the foundry shop? c. Isentropic
a. backlash a. Band saw d. Isotropic
b. clearance b. Drill machine Flat belt that is too tight will induce
c. pitting c. Hammer strain on the bearing and belt _____
d. space d. Saw and chisel a. Life will be shortened
For longer sprocket chain life the Stiffness is the material’s ability to b. Result to uneconomical
speed range of _____ fpm is _____ deformation under stress operation
recommended a. Non-planar c. Suffer/shatter
a. 1200-1400 b. Planar d. Will be sheared/cut
b. 1500-1600 c. Resist Circular pitch is measured along the
c. 1800-2000 d. Stafer ______ in the circular gear
d. 2000-2100 Strain or _____ is a change in geometry a. Circle
As a rule the center to center distance / shape of the body due to action of a b. Line of action
between sprocket should not be less force on it c. Pitch center
than ____ times the diameter of the a. Bending stress d. Pitch diameter
bigger sprocket and not less than 30 b. Deformation The recommend means of supporting
times the pitch nor more than about 50 c. Shear stress the chunk during the mounting
times to pitch d. Stress procedure to the lathe spindle is to
a. 1.5 What operation generally carried out to use:
b. 2 divide the parent coiled sheet into a. Crane
c. 2.5 narrower coils? b. Jack
d. 3 a. Slotting c. Overhead
The part of machine that absorbs the b. Squeezing d. Ratchet
energy delivered by a sharp force a c. Squaring The helical and herringbone gear teeth
blow d. Slitting cut after heat treatment should have a
a. Spring Which of the following bearing is used hardness in the range of 210/300BHN.
b. Anvil for low load and less expensive The pinion gear teeth hardness on the
c. Brakes production other hand, ideally/normally should be
d. Flywheel a. Babbit at _____ BHN
The progressive change in position of b. Ball bearing a. 250/320
_____ is called motion c. Roller bearing b. 350/380
a. Component d. Self aligning c. 400/345
b. Couple Which of the following is the process of d. 340/350
c. Link removing coarse scratches or tool A welding operation that use hot flame
d. Mass marks? and metal rod
The total frictional energy that is stored a. Polishing a. Gas welding
in the brake parts principally in the b. Buffing b. Arc welding
drum or disk is approximately: c. Honing c. Resistance welding
a. 56% up d. Lapping d. Automatic welding
b. 90% up Ability of a material to absorb strain In impact force introduced to cause
c. 86% up energy and will return to its original the metal to flow in a shaped mold
d. 75% up state according to the shape to dies made
It is a large lathe used for turning and a. Creep a. Hardness
boring cannons b. Fatigue strength b. Spinning
a. Gun lathe c. Hardness c. Swaging
b. Engine lathe d. Resilience d. Toughness
c. Cannon lathe What is other term applied to dynamic Basic size is the same as design size if
d. Turret lathe seals? there is no:
Maximum moment formula for beam a. Gasket a. allowance
simply supported at both ends and b. Packing b. clearance
subject to a load uniformly distributed c. Seal c. limits
over is length d. Shield d. tolerance
a. wL/2 Arc produced by two tungsten Forces of equal in magnitude but
b. wL2/8 electrodes into which a jet of hydrogen opposite in direction are parallel
c. wL2/16 is directed. called:
d. wL/12 a. Atomic hydrogen welding a. Acceleration
b. Electro-beam welding b. Coplanar
c. Hydrogen bomb c. Couple
d. Hydrogen lancing d. Non-coplanar
Which type of hardening will work to It is the process of reheating or drawing A steel numbered SAE-AISI, C1018 and
some extent in all metals? of metal that has been hardened to a contains 0.10% to 0.30% carbon.
a. Annealing comparatively low temperature in a. Low carbon steel
b. Austenitizing order to relieve the hardening strain b. Medium carbon steel
c. Martempering and increase the toughness of the c. High carbon steel
d. Work hardening steel. d. Very high carbon steel
If the velocity is variable and a. Tempering What do impact tests measure?
regularly/constantly increasing the rate b. Annealing a. Compactness
of change is called: c. Cyaniding b. Ductility
a. Acceleration d. Normalizing c. Plasticity
b. Constant work How do you call the tool used to cut d. Toughness
c. Moment threads in a hole? Which of the following alloying
d. Motion a. Top elements used in making high speed
A liquid metal at room temperature b. Bit steel.
a. Aluminum c. Tap a. Molybdenum
b. Mercury d. Reamer b. Nickel
c. Zinc Which of the following has low c. Manganese
d. Zirconium coefficient of expansion, corrosion d. Silicon
What tool is used when preparing to resistant, weak in strength, and used How do you call the metals that
put fitting on copper tubing? for non-ferrous applications as an contain large amount of carbon
a. Tube spreader alloying element? content?
b. Tube retarder a. Aluminum a. Ferrous metals
c. Flaring tool b. Aluminum oxide b. Non-ferrous metals
d. Tube countersink c. Copper oxide c. Base metals
The size of a drill is stamped on the: d. Copper d. Precious metals
a. Point The top surface joining the two sides of All of these are classifications of iron
b. Margin a thread. ore; except what?
c. Shank a. Pitch a. Magnetite
d. Flute b. Crest b. Hematite
A steel of carbon range of 0.45 to 0.75 c. Lead c. Siderite
percent is considered as what type of d. Space d. Sulfurite
steel? Which of the following alloying Which of the following chisels would
a. Low carbon steel elements of steel which makes it be used for cutting oil grooves?
b. High carbon steel extremely hard and resistance to wear a. Diamond-point cutter
c. Medium carbon steel without making it brittle? b. Round-nose chisel
d. Alloyed steel a. Chromium c. Cold chisel
A furnace which consists of blowing a b. Manganese d. Hot chisel
stream of air through a molten mass of c. Molybdenum All these are basic kinds of cast iron,
iron pig. A stream of air turned on d. Nickel except:
through the wind box and enters the Which of the following material(s) is a. Gray iron
converter at the bottom. Manganese, recommended for large sprocket of b. Malleable iron
carbon , and other elements of varying large speed ratio and having fewer c. White iron
amounts are added to produce steel engagement? d. Red iron
which is then poured and solidifies. a. Nickel-chromium steel In threaded members, which of the
a. Open-hearth furnace b. Copper following represents N.F.?
b. Electric furnace c. Cast iron a. National file
c. Cupola d. Aluminum b. Neutral file
d. Bessemer The least among iron ores for it c. National fine
Which of the following is abundant for contains many impurities, poor in iron d. Not found
ferrous metals? content and commonly used in In which of the following carrying
a. Sulfur England. capacity where roller bearing is utilized
b. Phosporous a. Hematite better than ball bearing?
c. Manganese b. Magnetite a. Heavy load
d. Carbon c. Limanite b. High temperature load
When working on bearings and d. Siderite c. Low load
checking for high spots, it is customary Which of the following basic kind of d. Reversing load
to apply what? cast iron is harder and more difficult to Which of the following alloying
a. White lead machine because it contains carbon in elements of steel will tent to increase
b. Dykem blue carbide state? its strength without decreasing its
c. Red lead a. Gray iron toughness or ductility and with its large
d. Prussian blue b. Malleable iron quantities the steel become tough but
Which of the following is the c. White iron develop high resistance to corrosion
specification of molybdenum alloy? d. Wrought iron and shock?
a. SAE 3XXX A steel numbered SAE-AISI, C1035 a. Chromium
b. SAE 4XXX when not rolled and contains 0.30% to b. Manganese
c. SAE 5XXX 0.60% carbon. c. Molybdenum
d. SAE 6XXX a. Low carbon steel d. Nickel
b. Medium carbon steel
c. High carbon steel
d. Very high carbon steel
It is the heat treatment of steel that Which of the following does not have to Which of the following is the smallest
produces extremely hard surface. The be lubricated when drilling? size drill?
process consists of exposing the steel a. Steel a. #80
to hot ammonia for some hours. b. Monel b. #1
a. Nitriding c. Brass c. #60
b. Cyaniding d. Tool steel d. #0
c. Carburizing Which of the following gasket material A white metal, almost as bright as
d. Ammonia bath is not used for high temperature? silver and is malleable and ductile and
A type of ferrous metal which is formed a. Asbestos can be welded.
by remelting pig iron and scrap iron in a b. Plastic nylon a. Nickel
cupola furnace. It is brittle and usually c. Rubberized b. Aluminum
gray in color, and commonly used in d. Wool c. White iron
making casting. In threaded members, which of the d. Lead
a. Cast iron following defines N.C.? The ability of the material to stretch,
b. Malleable iron a. Neutral cut bend, or twist without breaking or
c. Wrought iron b. National cut cracking.
d. Gray iron c. National coarse a. Ductility
The instrument used to reshape a d. Not center b. Malleability
grinding wheel that is grooved or out of How do you call metals have no carbon c. Hardness
round is called s: content? d. Compressibility
a. Wheel aligner a. Ferrous metals To avoid scoring in the bearing surface
b. Wheel emery b. Malleable iron and the shaft due to
c. Wheel dresser c. Non-ferrous metals contamination/absorption of the fine
d. Wheel cutter d. White iron dirt in the bearing during
The instruments used to remove old Before drilling a hole in a piece of operation/lubrication the bearing
packing from packing glands and metal, it should be: material to apply should have good
stuffing boxes are called: a. Marked with chalk ______ properties.
a. Packing tools b. Scribed a. Anti-scoring
b. Gland box cleaners c. Center-punched b. Corrosion resistance
c. Packing bits d. Protracted conformability
d. Packing screws Pipe taps are: c. Corrosion resistance
Which of the following represents a. The same size from end to end d. Embeddability
manganese steel? b. Tapered How do you call the tool used for
a. 13XX c. Not fluted cleaning files?
b. 40XX d. Not hardened a. File cleaner
c. 50XX Which of the following materials having b. File oilstone
d. 10XX thermal expansion of about 10 times c. File card
Which of the following alloying higher than those of metals and has d. Scraper
elements used in springs to make more more heat generated during Case hardening is the process of
reliant. machining? hardening the outer surface of the
a. Silicon a. Aluminum metal and the inner parts are soft.
b. Tungsten b. Asbestos What percentage of carbon content
c. Hardness and resistance c. Plastic that this type of hardening is allowed?
d. Nickel d. PVC a. 15% and above
Which of the following is the largest A classification of iron ore which b. 10 to 20% only
size drill? contains 72.5% iron when pure and the c. Less than 5% only
a. A remaining percentage impurities. d. Any of the following
b. Z a. Hematite The most commonly-used series in the
c. X b. Magnetite bulk production of bolts, screw, nuts
d. XX c. Limatite and other general applications in the
It is a silvery dull, soft metal and the d. Siderite coarse-thread series.
second lightest of all metals used in It is the element used mostly in steels a. UNC
the industry. designed for metal cutting tools. The b. UNF
a. Nickel steels added by this element are c. White iron
b. Aluminum tough, hard and very resistance to d. Lead
c. White iron wear. A steel of carbon range of 0.05 to 0.03
d. Lead a. Chromium percent is considered as what type of
No question b. Tungsten steel?
a. Operator must wear goggles c. Molybdenum a. Low carbon steel
b. The surface to be babbitted must d. Nickel b. High carbon steel
be free of moisture A classification of iron ore which c. Medium carbon steel
c. The surface to be babbited must contains 70% iron when pure and 50% d. Very high carbon steel
be clean iron when mined. The ability of a material to resist loads
d. All of the above a. Hematite that are applied suddenly and often at
It is the element whose chief function b. Magnetite high velocity.
is to strengthen the ferrite. It is used c. Limanite a. Fatigue strength
with tungsten to develop red hardness d. Siderite b. Bending strength
or the ability to remain hard when red How do you call a plane perpendicular c. Compressive strength
hot. to the gear axis? d. Impact strength
a. Chromium a. Normal plane
b. Cobalt b. Pitch plane
c. Molybdenum c. Plane of rotation
d. Nickel d. Radius of gyration
A steel carbon range of 0.75 to 1.7 Which of the following taps should be When preparing to tap a hole for a pipe
percent is considered as what type of used to start a thread? fitting the size of the drill will be:
steel? a. Plug a. Larger than the tap size
a. Low carbon steel b. Bottom b. Smaller than the tap size
b. High carbon steel c. Short c. Equal to the size of the tap
c. Medium carbon steel d. Taper d. None of the above
d. Very high carbon steel How do you call the tool(s) used for What machine is used to flatten
It is the ability of the material to resist cutting pipe threads? surface on a vertical, horizontal or even
loads that are applied suddenly and a. Pipe cutter angular plane?
often at high velocity. b. Pipe threader a. Shaper machine
a. Fatigue strength c. Pipe stock and die b. Power saw
b. Impact strength d. Pipe ratcher cutter c. Boring machine
c. Hardness A tap or die marked ¼ - 20 indicates: d. Drilling machine
d. Shock strength a. ¼” radius – 20 cm. long A steel of carbon range of 0.30 to 0.45
What is the actual torque ratio of a gear b. ¼” diameter – 20 threads per in. percent is considered as what type of
set divided by its gear ratio? c. ¼”radian – 20 threads per in. steel?
a. Approach ratio d. ¼” turn – 20 times a. Low carbon steel
b. Clearance The distance from a point on a screw b. High carbon steel
c. Contact ratio thread to a corresponding point on an c. Medium carbon steel
d. Efficiency adjacent thread, measured parallel to d. Alloyed steel
It is also known as strain drawing. It is the axis. It is copper tin alloy and is named
the process whereby certain degree of a. Pitch either bell metal or brown metal.
hardness is sacrificed in order to b. Lead a. Brass
reduce brittleness and increase the c. Thread b. Bronze
toughness of steel tool. d. Crest c. Munts metal
a. Tempering Which of the following is considered to d. Silver
b. Normalizing be the father of all machine tool? Which of the following is not a
c. Annealing a. Lathe machine standard thread from?
d. Quenching b. Boring machine a. Square
Before splicing electric wires, they c. Drilling machine b. Double flute
should be: d. Milling machine c. American national
a. Tinned Which of the following alloying d. 60 dev. Sharp V
b. Soldered elements of steel will produce fine The amount of variation permitted in
c. Cleaned and tinned grain structure and promotes greater the size of a part. it is the difference
d. Insulated toughness and ductility? between the limits of maximum and
Which of the following iron ores also a. Chromium minimum dimensions of a given part. It
known as “brown hematite” of ferric b. Manganese may be expressed at plus, minus, or as
oxide a yellowish brown powder? c. Molybdenum both plus and minus.
a. Hematite d. Nickel a. Tolerance
b. Magnetite Which of the following types of gear b. Limits
c. Limatite transmit power at a certain angle? c. Variation
d. Siderite a. Bevel d. Clearance
It refers to the internal resistance of a b. Helix A furnace similar to open-hearth. The
materials to being deformed and is c. Herringbone principal difference is the method of
measured in terms of the applied load. d. Spur heating the charged. It is used in
a. Stress It is another king of furnace where cast producing quality of steels because
b. Strain iron is remelted to make into cast iron. melting and refining is closely
c. Ductility The furnace is charges with layers of controlled.
d. Malleability coke and pig iron plus scrap iron. a. Closed-heart furnace
A steel numbered SAE-AISI, C1035 a. Open-hearth furnace b. Electric furnace
when not rolled and contains 0.60% to b. Electric furnace c. Cupola
1.30% carbon and used when extra c. Cupola d. Bessemer
hardness required. d. Bessemer Which of the following size of the drill is
a. Low carbon steel Which of the following is not a cut of used in preparing to tap a hole?
b. Medium carbon steel file? a. Equal to the size of the tap
c. High carbon steel a. Smooth b. Larger than the size of the tap
d. Very high carbon steel b. Half-round c. Smaller than the size of the tap
When measuring a drill from size c. Second cut d. None of the above
measure across the: d. Bastard The property of a material which resists
a. Margins After a piece of pipe has been cut, the forces acting to pull the material apart.
b. Shank hole is cleaned out with a: a. Tensile strength
c. Flutes a. Pipe reamer b. Compressive strength
d. Point b. Pipe taper c. Bending strength
What tool used in precision work to c. Pipe cleaner d. Torsional strength
smooth or enlarge holes? d. Hole cleaner Which of the following is the type of
a. Round out To check the speed of a motor or other cast iron that can stand more shock
b. Reamer rotary machine, one would use a: and blows than regular cast iron?
c. Drift pin a. Galvanometer a. Nodular iron
d. Protractor b. Tachometer b. Malleable iron
c. Micrometer c. Wrought iron
d. Geiger counter d. Gray iron
It is an alloy of copper and zinc. It is The property of a material which resists d. 0.0001” between piston and
approximately 1/3 zinc and 2/3 copper. forces from causing a member to bend cylinder for each inch diameter
a. Brass or deflect in the direction in which the of piston
b. Bronze load is applied. The work should be held _____, when
c. Muntz metal a. Bending strength using a drill press
d. Silver b. Compressive strength a. The hand
Which of the following is not c. Tensile strength b. A vise or clamp
considered to be precious metal? d. Torsional strength c. A gloved hand
a. Silver Which of the following alloying d. Pliers
b. Gold elements of steel will produce the A piece of tool steel held against an
c. Platinum greatest hardening effect like carbon emery wheel will give off
d. Steel and at the same time reduces the a. White sparks with stars on the
It is a furnace that converts pig iron enlargement of its grain structure. ends
into steel by oxidizing out the surplus a. Chromium b. Yellow sparks
carbon and using oxygen by throwing b. Manganese c. No sparks
raw iron ore into the furnace. c. Molybdenum d. Green sparks
a. Open-hearth furnace d. Nickel In general, files are divided into two
b. Electric furnace How do you call the tool used when classes called:
c. Cupola cutting a hole in the side of a round a. Single-cut and double-cut
d. Bessemer piece of metal? b. Rough and smooth
How do you call the tool used when a. Vise c. Fine and coarse
working with large sizes of pipe? b. “V” block d. Heel and sizes
a. Chain pipe wrench c. Jaw holder The length of a file is measured from:
b. Chain holder d. Chuck a. End to end
c. Chain tongs In which of the following where tubing b. Point to end
d. A or B is measured by c. Point to heel
It is a metal of almost pure iron, ductile a. Inside diameter d. Heel to end
and very tough it can be hammered b. Thickness of wall Which of the following will usually
and shaped at high temperature. It has c. Wire gage happen to the blade of flexible
a fibrous structure because of the d. Outside diameter hacksaw applied by too much
presence of slag. A square foot of steel plate 1/8” thick pressure?
a. Nodular iron weighs 5 pounds. The weight of a steel a. Snap easily
b. Malleable iron plate 10 feet long and 4 feet wide b. Buckle or run out of line
c. Wrought iron would be how much? c. Cut too fast
d. Gray iron a. 200 lbs d. Cut on a slant
Hand taps are provided in sets of three. b. 20 lbs Which of the following best defines
Which of the following set of three? c. 2000 lbs soldering?
a. Taper, plug and end d. 20,000 lbs a. It is holding two metals together
b. Taper, plug and bottom Which of the following will likely by heating
c. Short, taper and bottom happen if the angle on a drill is less b. It is joining two metals by a
d. Short, medium and long than 59 degrees? third soft metal that is applied
It refers to that property in steel which a. The drill will make a larger hole in a molten state
resist indention or penetration. It is b. The drill will make a smaller hole c. It is holding two different kinds of
usually expressed in forms of the area c. The hole will take longer to drill metals together
of an indention made by a special ball and more power is required to d. It is joining two metals together
under a standard load, or the depth of drive the drill by heatin
a special indentor. d. The drill will not center properly A surface should be prepared for
a. Hardness What is the correct cutting angle on a soldering by
b. Ductility drill for ordinary work? a. Filing the surfaces
c. Malleability a. 45 deg b. Acid-cleaning the surfaces
d. Wear resistance b. 59 deg c. Scraping the surfaces
Which of the following is used to keep c. 50 deg d. Any of the above
a metal clean while soldering? d. 65 deg Which of the following best defines
a. Flax A piece of stock 8” long is 3” diameter sweating?
b. Flux at one end and 1-1/2” diameter at the a. Soldering two different kinds of
c. Torch other end. The taper per inch is: metal together
d. Insulated a. ½” b. Separating two pieces of metal
The property of a material to resist b. 3/16” that have been soldered together
various kinds of rapidly alternating c. ¾” c. Tinning two surfaces, applying,
stresses. d. 5/16 flux between them, holding the
a. Fatigue strength An approximate safe rule for cutting two together and heating.
b. Bending strength new pistons for steam pumps is to d. None of the above
c. Compressive strength allow: Solder will not unite with a metal
d. Impact strength a. 0.002” between piston and surface that has:
If you wanted to check the face of a cylinder for each inch diameter a. Grease on it
pump slide valve or other flat-faced of piston b. Oxidation on it
valve, you could check for trueness on b. 0.001” between piston and c. Dirt on it
a: cylinder for each inch diameter d. Any of the above
a. Flat board of piston
b. Piece of glass c. 0.010” between piston and
c. Surface plate cylinder for each inch diameter
d. Bearing plate of piston
Prepared soldered paste flux is most The flexible type hacksaw blade is best What is/are the reason(s) of soda being
popular but if you did not have any, you suited for which of the following added to water and is used for cooling
could use: materials? instead of plain water?
a. Hydrochloric acid a. Channel iron a. It reduces the amount of heat
b. Nitric acid b. Aluminum generated
c. Sulfuric acid c. Tubing b. It improves the finish
d. Any of the above d. Any of the above c. It overcomes rusting
For aluminum, special solders are Which of the following safety d. All of these
being used and will usually require precautions should be followed when What is the name of the taper shank
which of the following? renewing a flange gasket? used on drills?
a. More heat a. Drain the line thoroughly a. Miller
b. The same heat as copper wire b. Tie down isolation valves b. Starett
c. Less heat c. Isolate the section to be worked c. Morse
d. The same heat as sheet metal on d. Stanley
A piece of mild steel held against an d. All of these In what operation where “center
emery wheel will give off In installing a new flange gasket, which drilling” is to be found?
a. Bright shiny sparks of the following must be done first? a. Drilling a center in an odd-
b. No sparks a. Flange faces are painted shaped piece of metal
c. Light straw-colored sparks b. Flange faces are absolutely b. Drilling and countersinking
d. Green sparks clean with one tool
A gear wheel making 156 rpm has 56 c. Isolating valves are open c. Centering with one tool and
teeth. It drives another gear at 91 rpm. d. Old gasket is in place drilling with another
The number of teeth on the second In one turn of the screw in a d. Drilling a center in a piece of
gear is: micrometer, it moves its spindle by stock in a drill press
a. 65 what amount? What is the other term for the
b. 50 a. 0.25” operation of “truing” of a grinding
c. 90 b. 0.025” wheel?
d. 96 c. 0.205” a. Centering
Tool steel can be hardened by which of d. 0.110” b. Sizing
the following? What is the approximate melting point c. Dressing
a. Heating red hot and plunging into of Babbit? d. Rounding
water a. 1000 F An approximate safe rule for cutting
b. Heating red hot and cooling in a b. 750 F new piston rings for steam pumps is to
blast of dry air c. 650 F make the ring:
c. Heating red hot and plunging into d. 500 F a. 1/32” larger in diameter per inch
linseed or cottonseed oil How do you call the tool used to cut diameter of cylinder
d. Any of the above, depending on threads on pipe? b. 1/16” larger in diameter than that
type and use a. Pipe tool of the cylinder
At what temperature where soft solder b. Pipe vise c. 1/16” larger in diameter per
approximately melts? c. Pipe stock inch diameter of cylinder
a. 250 deg d. Pipe cutter d. 0.005” larger in diameter per inch
b. 350 deg A double-bottom tank is 18’ wide, 24’ diameter of cylinder
c. 450 deg long and 4’ deep. It is filled with fresh The “tang” of a file is the part that:
d. 550 deg water/ the total capacity in tons is: a. Does the cutting
What material where a scriber is made a. 50 b. Has no teeth
of? b. 55 c. Fits into the handle
a. Carbon steel c. 48 d. Is opposite the handle
b. Tool steel d. 45 What is the effect if the melting point of
c. Cold - rolled steel What is the process used to retard solder is very high?
d. Hot – rolled steel corrosion on iron pipe? a. Weaker the solder joint
Standard vise has _____ jaws? a. Annealing b. Stronger the solder joint
a. Soft b. Soldering c. Softer the solder joint
b. Hard c. Tempering d. Harder the solder joint
c. Semihard d. Galvanizing What is(are) the hand tool(s) used for
d. Semisoft Brazing requires which of the cutting threads on round stock?
When the dial on the cross-feed is following? a. Stock and die
turned 0.010”, how much is removed a. Hard solder b. stock
from the diameter of the stock being b. More heat c. Die wrench
cut? c. Soft solder d. Stock cutter
a. 0.010” d. A and B If the cutting edges of a drill are cut at
b. 0.005” Which of the following groups of pipe different angles:
c. 0.020” sizes is correct? a. The drill will not cut
d. 0.015” a. ¼, ½, ¾, 7/8, 1 b. The hole will be larger than the
Which of the following describes a b. ¼, 3/8, 1/2 , ¾, 1 drill
flexible back hacksaw blade? c. ¼, 3/8, ½, 5/8, 3/4 , 1 c. The hole will be smaller than the
a. Only the teeth hardened d. ¼, ½, 5/8, 1 drill
b. A movable back What will likely to happen if the drill’s d. None of the above
c. Flexible ends speed is too high? Which of the following is not a
d. Only the back hardened a. Cut faster common drill shank?
b. Cut slower a. Straight
c. Lose its temper b. Fluted
d. Not cut c. Taper
d. Bit
Which is very necessary when Grinding wheels have a range of soft to A tapered piece of stock is 2” long, 1-
installing packing in a packing box? hard abrasive materials depending on 1/8” diameter at one end and ¾”
a. Leave one old turn at the bottom the use. Most manufacturers letter diameter at the other end. The taper
of the packing box their wheels from A to Z. which of the per foot is:
b. Remove one turn and install one following mark represents the hardest? a. 2”
new turn of packing a. E b. 2-1/4”
c. Leave sufficient end clearance b. Z c. 2-1/2”
on each turn to allow for c. A d. 2-1/16”
expansion d. E1 Which of the following tools would be
d. Place end cuts directly in line Which of the following would cause hot most useful when taking leads on
with each other bearings? bearings?
In which of the following where straight a. Improper oil a. Dividers
muriatic acid is often used as a flux? b. Improper alignment b. Micrometer
a. Galvanized iron c. Dirt in oil c. Outside calipers
b. Sheet steel d. All of the above d. Center gage
c. Cast iron How do you call the pipe fitting which What is(are) the reason(s) why tapered
d. Any of the above has two openings and provides a turn shanks are used on large drill presses?
Which of the following where “pillar” of 90 degrees? a. The drill can be centered more
files are used? a. An elbow easily
a. Filing slots b. A coupling b. The drill can be easily forced
b. Filing against a shoulder c. A tee out of the sleeve with a drift
c. Filing keyways d. A union c. The shank will not turn when
d. Any of the above What is the use of flux in soldering? cutting
Which of the following is correct in a. Keep the solder from running off d. The shank can be reground when
pouring Babbit? the metal worn
a. It can be done in several pouring b. Keep the metal from getting too What is the wrench size for a ¾” nut?
b. Must be poured all at one time hot a. 1-1/4”
c. Can be done at intervals c. Keep the tip of the soldering iron b. ¾”
d. Must be done in cool place clean c. 1-1/2”
In pipe fittings the term “offset” refers d. Remove and prevent oxidation d. 10/24”
to what? of the metals A piece of stock 8” long is 4” diameter
a. A cut-off running at right angles Which of the following is used to cut on one end and 1” diameter on the
to the original piping gears? other end. The taper per foot is:
b. Two pipes running parallel to a. Gear cutter a. 4”
each other b. Gear center b. 4-1/4”
c. A bend in the pipe c. Gear hob c. 4-1/2”
d. Two sizes of pipe in the same run d. Gear threader d. 4-1/16”
Soft solder is made of which of the A tool bit for cutting an American For which of the following where the
following? National thread should be ground with lathe compound is used?
a. Copper and zinc what angle? a. Angle cutting
b. Tin and copper a. 45 deg b. Facing
c. Tin and lead b. 60 deg c. Grooving
d. Tin and zinc c. 90 deg d. Any of the above
What is the approximate gap clearance d. 30 deg What is the main difference between a
for new piston rings for steam pumps? In machining, which of the following planer and a shaper?
a. 0.003” for each inch diameter could be the reason if tool bit burns? a. The planer has an offset table
of cylinder a. Speed is too low and the shaper has a horizontal
b. 0.001” for each inch diameter of b. Material is too hard table
cylinder c. Speed is to fast b. The shaper has a rotting table
c. 0.010” for each inch diameter of d. Material cannot be cu and the planer has a horizontal
cylinder Hard solder is made of which of the table
d. 0.050” for each inch diameter of following? c. The table of a planer has a
cylinder a. Copper and zinc reciprocating motion past the
On XX heavy pipe the extra metal is b. Tin and copper tool head while the table of the
added to which of the following? c. Tin and zinc shaper s stationary and the tool
a. Outside d. Tin and lead head has a reciprocating
b. Inside Which of the following is the flux motion
c. Half on the inside, half on the usually used for hard solder? d. One is larger than the other
outside a. Rosin If muriatic acid is used as a flux, the
d. Three quarters on the outside, b. Barium soldered area must be cleaned
one quarter on the inside c. Borax thoroughly afterwards to prevent:
When installing new grinding wheel, d. Alum a. Anyone touching it from getting
always use Which of the following where pipe burned
a. Blotting paper gaskets on each wrench (Stillson) was designed to be b. Remaining acid from eating the
side of the wheel used? metal
b. Copper gasket on each side of a. Hexagonal objects c. The acid from evaporating and
the wheel b. Square objects the solder disintegrating
c. Only the steel washers provided c. Round objects d. None of the above
with the machine d. Flat objects
d. None of the above
How do you call the process used to c. The distance from the top of one Which of the following statement(s) is
retard corrosion (rust) on iron pipe and thread to the bottom of the next correct for the “brazed joint”
fitting? thread a. Stronger than a soldered joint
a. Tinning d. The distance from the bottom of b. Weaker than a soldered joint
b. Galvanizing a head on a bolt to the first c. The same strength as a soldered
c. Soldering thread joint
d. Sulphuring What tool is used to check external d. Three times as strong as a
How many flutes does a drill bit have? pipe threads? soldered joint
a. 4 flutes a. Plug gage Where is the correction position of the
b. 2 flutes b. Pitch gage tool bit when facing off a piece of
c. 3 flutes c. Thread gage material in the lathe chuck?
d. No flutes d. Ring gage a. Above center
Copper is annealed by heating to a In which of the following where plug b. Below center
cherry red color and _____. cock offers? c. At the center
a. Dousing in cold water a. More resistance to flow than a d. Off center
b. Dousing in oil globe valve If a piston ring is to be made 1/64”
c. Cooling slowly in air b. The same resistance to flow as a larger in diameter per inch diameter of
d. Dousing in hot water globe valve the cylinder which it is to fit, the
One of the factors involved in the c. Less resistance to flow than a required diameter for a piston ring to fit
choice of a grinding wheel is: globe valve an 8” cylinder will be
a. The kind of material to be ground d. The same resistance to flow as a. 8-1/4”
b. The amount of stock to be an angle valve b. 8-3/4”
removed What is the use of shims? c. 8-1/8”
c. The kind of finish required a. Separate fresh and salt water d. 8-5/32”
d. All of the above lines What should be done first before
The lip clearance of a drill should be b. Replace fuses applying layout blue on a piece of
approximately how many degrees? c. Adjust cylinder liners metal?
a. 20 deg – 25 deg d. Adjust bearing clearances a. roughened
b. 12 deg – 15 deg If you use a dry grinding wheel for b. clean
c. 5 deg – 10 deg sharpening tool bits, dip the end of the c. hot
d. 15 deg – 20 deg bit in water frequently to prevent d. cold
In which of the following where pipe is a. Burning your fingers What is the most common flux to be
measured? b. Annealing the cutting edge of used when soldering brass, copper or
a. Inside diameter the bit tin?
b. Thickness of wall c. Hardening the tip a. Tallow
c. Outside diameter d. The tip from crystallizing b. Borax
d. Wire gage Sheet metal of #18 gage is heavier c. Rosin
Which of the following is correct about than: d. Sal ammoniac
standard wire gage? a. 12 gage The familiar “3/16 – 16” in machine
a. # 10 is larger than # 5 b. 22 gage shop means what?
b. # 1 is smaller than # 2 c. 14 gage a. 6 pieces, 3/8 inch long
c. # 25 is smaller than # 20 d. 16 gage b. Gear with 16 teeth and a 3/8”
d. # 30 is larger than #25 A tank 28” in diameter and 14’ high is arbor hole
What is the reason why drill “squeals” filled with water. The total pressure on c. 3/8” square, 16” long
when cutting? the bottom of the tank is: d. 3/8” diameter, 16 threads per
a. Drill being ground improperly a. 3741 lbs inch
b. Insufficient lubrication b. 2573 lbs What is the usual cutting angle on a
c. Drill being too hot c. 4257 lbs drill for drilling mild steel?
d. Any of the above d. 3000 lbs a. 39 deg
In machine shop, if the lips of a drill are A piece of stock 6” long is 2” diameter b. 59 deg
of different lengths then which of the at one end and is cut with a taper of ½” c. 49 deg
following will likely happen? to the foot. The diameter of the smaller d. 69 deg
a. The drill will not cut will be: A Hacksaw blade with 18 teeth per
b. The hole will be larger than the a. 1-1/2” inch is best suited for cutting are made
drill b. 1-1/4” of what materials
c. The hole will be smaller than the c. 1-3/4” a. Solid stock
drill d. 2” b. aluminum
d. None of these will happen What is/are the primary reason(s) why c. Cast iron
What tool is used to check internal lead is used in solder? d. Any of the above
pipe threads? a. It has a high melting point How is “eleven-sixteenths” of an inch
a. Plug gage b. It is cheap expressed in decimal
b. Pitch gage c. It has a low melting point a. 0.6785
c. Thread gage d. B and C b. 0.6875
d. Ring gage Cast iron weighs 640 lbs per cubic foot. c. .7685
Which of the following defines “pitch” How much is the weight of a cast iron d. .6578
in threads? block 14” x 12” x 18”? When cutting material in a lathe, the
a. The distance of the full length of a. 1200 lbs softer the material being cut the tool
the thread b. 1120 lbs bit should have
b. The distance from a point on c. 1000 lbs a. More top rake
one thread to a corresponding d. 1088 lbs b. Double top rake
point on the next thread c. Less top rake
measured parallel to the axis d. Any of the above
What do you call the process of Which of the following is produced c. Crater wear
removing the sharp edges from a piece through powder metallurgy from d. Tool life
of stock nonferrous metals After any cutting or standard grinding
a. knurling a. Sintered carbides operation the surface of a workplace
b. Planning b. Ceramic tools will consists of
c. chamfering c. diamonds a. Smear metal
d. turning d. Cast nonferrous b. Ultra finishing
A specific method of zinc galvanizing in Which of the following are used in c. Super finishing
which parts are tumbled in zinc dust at specific case, usually in finishing d. Centerless grinding
high temperature operations A method that does not require
a. sheradizing a. Sintered carbides clamping, chucking or holding round
b. Super finishing b. Ceramic tools workpieces
c. polishing c. diamonds a. Centerless grinding
d. pickling d. Cast nonferrous b. Laser machining
Application of a thin phosphate coating Ceramic tools operate at what c. Chemical milling
on steel to improve corrosion temperature d. Ultra finishing
resistance a. Below 2000 F Hacksaw blades are made of what
a. parkerizing b. Below 2200 F materials
b. honing c. Above 2000 F a. Tool steel
c. Hard surfacing d. Above 2200 F b. Tungsten alloy steel
d. Galvanizing Which of the following is not a c. High – speed steel
A zinc coating applied to low carbon measuring device d. Any of the above
steel to improve corrosion resistance. a. Orsat analyser Hacksaw blades with 24 TPI is best
The coating can be applied on a hot dip b. thermometer suitable for cutting which of the
bath, by electroplating or by dry c. Micrometer caliper following materials
tumbling(sheradizing) d. Divider a. Tubing
a. parkerizing A carbon tool steel can be given a good b. Brass and copper
b. honing edge, but is restricted to use below c. Sheet metal over 18 gage
c. Hard surfacing a. 400 – 600 F d. Any of the above
d. galvanizing b. 300 – 400 F Which of the following is described as
Brittle materials produce discrete c. 700 – 800 F the “safe edge” of the file
fragments known as d. 800 – 100 F a. The end opposite the handle
a. A chip breaker groove Cast non ferrous tools are brittle but b. The edge with no teeth
b. Discontinuous chips can be used up to approximately c. The one with the handle
c. Non segmented chips a. 1700 F d. none of the above
d. Type chips b. 2200 F All hard hacksaw blade is best suited
Which of the following is the sum of the c. 2000 F for work in which of the following
rake, clearance and wedge angle d. 600 F a. brass
a. 90 deg They are produced through powder b. Cast iron
b. 180 deg metallurgy from non ferrous metals c. toolsteel
c. 45 deg a. diamonds d. Any of the above
d. 75 deg b. Cast non ferrous What is the use of coolant in the power
What is the relative velocity difference c. Ceramic tools hacksaw when cutting materials
between the tool and the workpiece d. Sintered carbides a. Absorb the heat of friction
a. Cutting speed Which of the following is manufactured b. prevent the blade from
b. Chip velocity from aluminum oxide have the same overheating
c. Shear velocity expected life as carbide tools but can c. Prevent the blade from losing
d. Rake velocity operate at speeds from two to three its temper
How do you call the velocity of the chip times higher d. All of the above
relative to the work piece a. Ceramic tools The work should be held with _______
a. Cutting speed b. diamonds when using a drill press
b. Chip velocity c. High speed steel a. The hand
c. Shear velocity d. Carbon tool steel b. A vise or clamp
d. Rake velocity Soluble in the presence of high c. A pair of pliers
Which of the following is the primary temperature iron used in specific d. Gloves on
parameter affecting the cutting energy cases, usually in finishing operations The best procedure when filing a piece
requirement a. Ceramic tools of metal in a lathe is to take
a. Compressive stress b. diamonds a. Short even strokes
b. Shear stress c. High speed steel b. Long fast strokes
c. Torsional stress d. Carbon tool steel c. Long slow strokes
d. Bending stress Which of the following is a good heat d. Short fast strokes
A plain carbon steel with remove, but it promote rust Before applying layout blue on a piece
approximately 0.9 to 1.3% carbon a. Air kerosene of metal, it must be
which has been hardened and b. diamonds a. Roughened
tempered c. Carbon dioxide b. Cleaned
a. Carbon tool steel d. Water c. Heated
b. High speed steel Taylors equation relates cutting speed d. cold
c. Low speed steel v and tool life T for particular
d. Medium speed steel combination of tool and workpiece, VTn
= constant. This equation is also
known as
a. Flank wear
b. Nose failure
A hacksaw blade with 34 teeth per inch The electro deposition of a coating Ductile material form long, helix –
should be used for cutting which of the onto the workpiece electrical current coiled string chips known as
following items used to drive ions in solution to the a. Continuous chips
a. brass part. The workpiece is the cathode in b. Discontinuous chips
b. Heavy stock the electrical circuit c. Non segmented chips
c. Cast iron a. electroplating d. Type chips
d. Thin wall tubing b. Calorizing The term “set” of a saw best defines
When turning a piece of round metal c. burnishing what
un a lathe, the front clearance should d. buffing a. To set properly in the frame
be smaller for Which of the following is the best file to b. Alternate teeth are turned
a. Large diameter cutting be used when finishing sharp corners slightly to left and right to
b. Cutting angles or slots and grooves make cutting slot slightly
c. Small diameter cutting a. Mill file wider than the thickness of
d. none of the above b. Knife file the blade
After grinding a tool bit the cutting edge c. Square c. The teeth have been case
should be d. Jewelers file hardened for better cutting
a. Case hardened Grinding in which very little material, d. The teeth are set evenly apart
b. Stoned with an oil stone 0.001 to 0.005 in. is removed What is used for finishing a piece of
c. Rubbed with emery cloth a. Grinding work to size with a file
d. Rubbed with crocus cloth b. snagging a. Double cut fine tooth file
The alignment of coupling faces can be c. Honing b. Mill file
checked by which process d. Lapping c. Single cut fine tooth file
a. Using an inside micrometer How do you call the velocity of the chip d. Crossing file
b. Inserting a thermocouple relative to the tool face The energy expended per unit volume
c. Inserting a feeler gage a. Cutting speed removed is known as
between the coupling faces b. Chip velocity a. Specific cutting energy
at various points around the c. Shear velocity b. Metal removal rate
circumference d. Rake velocity c. Cutting horsepower
d. Rotating and measuring to Which of the following is the best d. Absolute cutting energy
nearest permanent fitting instrument for measuring thousandths Shooting sand(i.e sand blasting). Steel
A hot dip or electroplate application of of an inch grit, or steel shot against work pieces
tin steel a. caliper to remove casting sand, scale and
a. Tin plating b. micrometer oxidation
b. Metal spraying c. tachometer a. Abrasive cleaning
c. Organic finishes d. pyrometer b. Tumbling
d. Lapping The purpose of “tempering” is to make c. Barrel finishing
A fine finishing operation, similar to a metal what d. Anodizing
polishing, using a very fine polishing a. harder The spraying of molten metal onto a
compound b. Less brittle product. Methods include metalizing,
a. electroplating c. Softer metal powder spraying and plasma
b. Calorizing d. More brittle flame spraying
c. burnishing Which of the following contains a. Tin plating
d. buffing tungsten or chromium and retains its b. Metal spraying
The covering of surfaces with an hardness up to approximately 1100 F a c. Organic finishes
organic film of paint enamel or lacquer property known as red hardness d. Lapping
a. Tin plating a. Carbon tool steel Addition of _______ to water produces
b. Metal spraying b. Cast nonferrous an efficient, inexpensive cutting fluid
c. Organic finishes c. High speed steel that does not promote rusting
d. Lapping d. Diamond a. Sal soda
The angle at which the tool meets the This process is known as bonderizing b. Kerosene lubricants
workpiece is characterized by when used as a primer for paints c. Straight cutting oils
a. True rake angle a. parkerizing d. Air
b. Clearance angle b. honing Used as a finishing operation since
c. Relief angle c. Hard surfacing very fine and dimensionally accurate
d. Wedge angle d. Galvanizing surface can be produced
A piece of cast iron held against an Which of the following information is a. Grinding
emery wheel will give off what necessary when ordering a file b. snagging
a. Dull yellow sparks a. Size (length) c. Honing
b. Red sparks b. Type of teeth d. Lapping
c. Bright shiny sparks c. shape Describes very rough grinding, such as
d. No sparks d. All of the above that performed in foundries to remove
Contains tungsten or chromium and How do you call the process of fine gates, fins and risers from castings
retains its hardness up to grinding or peening operation designed a. Grinding
approximately 600 C to leave a characteristic pattern on the b. snagging
a. Carbon tool steel surface of a workpiece c. Honing
b. High speed steel a. electroplating d. Lapping
c. Low speed steel b. Calorizing How is the hacksaw blade should be
d. Medium speed steel c. burnishing placed in the frame
What is the primary purpose of knurling d. buffing a. The teeth pointing forward
a. Smooth material b. The teeth pointing backward
b. Roughen material c. One end looser than the other
c. Polish material end
d. Sharpen material
 d. The teeth facing in any c. Approximately 25% Rotating parts in a barrel filled with an
direction d. Approximately 75% abrasive or non abrasive medium.
Cast non ferrous tools are brittle but A plain carbon steel with Widely used to remove burrs, flash,
can be used up to approximately approximately 0.9 to 1.3% carbon scale, and oxides
a. 1000 C which has been hardened and a. Abrasive cleaning
b. 925 C tempered b. Calorizing
c. 1500 C a. Carbon tool steel c. Barrel finishing
d. 750 C b. Cast nonferrous d. Anodizing
In how many positions can a hacksaw c. High speed steel The process of finishing off a piece of
blade be placed in a frame d. Diamond metal with a real smooth finish
a. Two positions What is the typical chip thickness ratio a. A draw filing
b. One position a. 0.50 b. Mill filing
c. Four positions b. 0.75 c. Side filing
d. Three positions c. 0.25 d. Flat filing
The creation (by spraying, plating, d. 1.00 Copper is annealed by heating to a
fusion welding or heat treatment) of When cutting material in a lathe, the cherry red color and
hard metal surface in softer product harder the material being cut, the tool a. Dousing in cold water
a. Parkerizing bit should have b. Dousing in oil
b. Honing a. More side rake c. Cooling slowing in air
c. Hard surfacing b. More top rake d. Dousing in hot water
d. Galvanizing c. Less side rake What is another term of barrel finishing
Files are divided into two general d. No side rake a. Abrasive cleaning
classes. How are these classified Which of the following is the usual b. Tumbling
a. Rough and smooth procedure when cutting a long thin c. Barrel finishing
b. Single cut and double cut piece of metal d. Anodizing
c. Large and small a. Turn the blade upside down in What is normally used in drilling a hole
d. Flat shapes and round shapes the frame in a piece of work held in a lathe chuck
At what speed that carbon steel drill b. Turn the blade at right angles a. Compound rest
should be operated to the frame b. Tailstock and drill chuck
a. Speed grater than that when c. Use a blade with fewer teeth c. Cross-feed
using a high speed drill per inch d. Headstock
b. Speed less than that when d. Set the blade in the frame with Which of the following is the effect if
using a high-speed drill the teeth facing toward you the lathe is put into back gear
c. The same speed as that when Which of the following is a “must” for a. Go backwards of the same
using a high speed drill all hard hacksaw blades speed
d. none of the above a. It has a hard back and flexible b. Faster
It reduce friction and do not cause rust teeth c. slower
but are less efficient of heat removal b. It has a flexible back and hard d. At a slower speed backwards
than water teeth Abrasion of parts against wheels or
a. Sal soda c. It has the entire blade belts coated with polishing
b. Kerosene lubricants hardened compounds
c. Straight cutting oils d. It will only fit a solid frame a. Sheradizing
d. Air hacksaw b. Super finishing
Often ground in the cutting tool face to A process in which metal is dipped in c. Polishing
cause long chips to break into shorter, dilute acid solutions to remove dirt d. Pickling
more manageable pieces grease oxides A drill bit has how many flutes
a. A chip breaker groove a. Sheradizing a. 4 flutes
b. Discontinuous chips b. Super finishing b. 2 flutes
c. Non segmented chips c. Polishing c. 3 flutes
d. Type chips d. pickling d. No flutes
Which of the following is manufactured What is the minimum diameter of What is the approximate distance if the
from aluminum oxide have the same piece of round stock necessary to marking on a micrometer barrel
expected life as carbide tools but can make a square key ¾” on a side a. 0.025” apart
operate at speeds from two to three a. 1.5” b. 0.0025” apart
times higher? They operate below 1100 b. 1.0” c. 0.250” apart
C c. 1.06” d. 2.50” apart
a. Sintered carbides d. 0.75” A scriber is made from what materials
b. Ceramic tools An electroplating- acid bath oxidation a. Carbon steel
c. diamonds process for aluminum and magnesium. b. tool steel
d. Cast nonferrous The workpiece is the anode in the c. Cold-rolled steel
What is the main purpose of electrical circuit d. Hot rolled steel
“annealing” a metal a. Abrasive cleaning Which of the following is used to
a. To make the metal harder b. Tumbling reduce friction, remove heat, remove
b. To make the metal softer c. Barrel finishing chips and protect against corrosion
c. To make the metal harder d. Anodizing a. Water vapor
medium-hard A fine grinding operation used to obtain b. Carbon
d. To make the metal harder and exact fit and dimensional accuracy c. Air
shiny a. Tin plating d. Cutting fluid
Percent of the heat developed in b. Metal spraying
cutting is due to friction between the c. Organic finishes
tool and the workpiece is d. Lapping
a. Approximately 50%
b. Approximately 10%
A superfine grinding operation used to d. Coplanar The sum of their addendums and
expose non-fragmented, crystalline The separate forces which can be so dedendums is:
base meta; combined are called: a. Whole depth
a. Sheradizing a. Concurrent forces b. Width of space
b. Super finishing b. Couple c. Full depth
c. Polishing c. Non concurrent forces d. Working depth
d. Pickling d. Component forces The property of material wherein the
Sintered carbide operate at cutting A material plane was subjected to a content is continuously distributed
speeds how many times as fast as HSS load. When the load was removed the through its entire mass.
tools strain disappeared. From the a. Plasticity
a. 2 to 5 structural change which of the b. homogeneity
b. thrice following can be considered about c. malleability
c. 5 to 7 this material? d. All of these
d. Twice a. It has high modules of The property that characterizes a
How do you call a small piece of metal
elasticity material’s ability to be drawn into a
clogged between the teeth on a file
b. It is plastic wire.
a. Clogs
c. It does not follow Hooke’s law a. Tensile strength
b. Pins
c. Flats d. It is elastic b. Endurance limit
d. Bumps The reciprocal of a diametral pitch or c. Ductility
A grinding operation using stones the ratio of the pitch diameter to the d. Thermal conductivity
moving in a reciprocating pattern. no. of teeth The alloy materials used in the
Leaves a characteristic cross hatch a. Lead production of metal working tools:
pattern b. Involute a. Titanium, phosphorous
a. parkerizing c. Module b. Vanadium, chromium,
b. honing d. Clearance molybdenum
c. Hard surfacing One of these materials is not a c. Tungsten, silicon, hadfield
d. Galvanizing structural steel? d. High carbon steel
The diffusing of aluminum into steel a. Low carbon steel Which of the phases of steel elements
surface producing an aluminum oxide b. Stainless steel has a face-centered cubic structure?
that protects the steel from high c. Tool and die steel a. Pyrite
temperature corrosion d. Medium carbon steel b. Cementite
a. electroplating Flat leather belting not recommended c. Austenite
b. Calorizing for used in a speed in excess of d. All of these
c. burnishing ____fpm. The rigidity of polymer can be
d. buffing a. 3600 increased by:
Cut pieces from flat plates, strips and
b. 6000 a. Furnace melting
coil stock.
c. 4800 b. Crystallization
a. Shearing
d. All of these c. Normalizing
b. Bend allowance
The angle included between the side d. Shot opening
c. Forming dies
of the thread measured in an axial The difference between cast steel and
d. Spring back
plane in a screw thread cast iron:
What is the other name give to gravity a. Angle of thread a. All of these
drop hammers?
b. Helix angle thread b. Cast steel has usually less
a. Board hammers
c. Angle between thread or 40 than 1%
b. Press forging
d. Half angle thread or 20° c. While cast iron ha 2% or 3.6%
c. Powered hammers
The ratio moment of inertia on a cross- carbon range
d. Impactor forging
section of a beam to this section d. Cast iron has lower strength
Suitable for creating parts of zinc, modulus is:
aluminum, copper, magnesium, and more brittle and has lower
a. A measure o distance
lead/tin alloys: ductility than cast steel
b. Equal to the radius of gyration
a. Die casting The most popular of all soldering
and compression materials in use has composition of:
b. Investment casting
c. Multiplied by the bending a. 45/55% tin & lead
c. Centrifugal casting
moment of inertia to b. All of these
d. Continuous casting
determine the yield stress c. 50/50% tin & lead
It is the ration of the pitch diameter in
d. Equal to the area of the cross- d. 60/40% tin & lead
inches to the number of teeth.
section and tension Which of the following raw materials
a. Pitch circle
Alloy that improves strength of steel at are used in the foundry molding
b. Module
high temperature application: operation?
c. English module
a. Aluminum a. Silica sand, bentonite,
d. Pitch diameter
b. Silicon flour/paste water
Which of the following is a unit or
c. Manganese b. Silica sand paste, graphite
energy?
d. Chromium electrode
a. Ft-lb
Length of contact between two mating c. Silica sand and paste
b. BTU/hr
parts in a screw and nut threads d. Silica sand, linseed oil, flour
c. Hp
measured axially is termed Which of the following is not a part of
d. Watt
____________. micrometer caliper?
How do you call directional forces a. Length of engagement
equal in magnitude and parallel. a. Thimble
b. Arc of contacts b. Spindle
a. Non coplanar
c. Axis of contact c. Head screw
b. Couple
d. Depth of engagement d. Anvil
c. Centroid
To avoid brittleness of weld or the c. Strip die A pair of equal and opposite (not
residual stress in the welding it is d. Brake collinear) forces that tend cause a
normally stress relieved of: Molten metal is forced under pressure rotation of a body.
a. Normalizing into a permanent metallic mold known a. Couple
b. Flame hardening as: b. Equilibrium
c. Tempering a. Die c. Centroids
d. Annealing b. Mold d. Vector
Which of the following uses high- c. Alloy The most known lubricants being
energy electrical discharges to shape d. Torpedo utilized in whatever category of load
electrically conducing workpiece? More than how many percent of all die and speed are oil, air, grease and dry
a. Electrochemical machining casting uses zinc alloys? lubricants like:
b. Electrochemical grinding a. 50% a. Bronze
c. Electrical discharge b. 25% b. Silicon
machining c. 75% c. Lead
d. Ultrasonic grinding d. 80% d. Graphite
For common brass tools, wear ratios An entrance to the cavity maybe Relies on closed impression dies to
for the tool and workpiece vary constricted to control the rate of fill produce the desired shape.
between: and such constrictions are known as: a. Hammer forging
a. 4:1 a. Gates b. Open die forging
b. 20:1 b. Downgate c. Smith forging
c. 10:1 c. Sprue d. Drop forging
d. 8:1 d. Risers The ability to resist deformation under
Forms shallow raised letters or other Two parallel shaft connected by pure stress.
designs in relief on the surface of rolling turn in the same direction and a. Plasticity
sheet metal blanks. having a speed ratio of 2.75. what is b. Stiffness
a. Coining the distance of the two shaft if the c. Toughness
b. Embossing smaller cylinder is 22 cm. in diameter. d. All of these
c. Swaging a. 16.60 cm An elastic body whose primary
d. Blanking b. 25.25 cm function is to deflect under load.
It can be used to be shape hard brittle c. 30.25 cm a. Clutch
materials such as glass, ceramics d. 19.25 cm b. Brake
crystals and gem stones, as well as Used to change rotary motion to c. Stopper
tool steel and other metals. reciprocating motion: d. Spring
a. Chemical milling a. Rack gears It is used to cut or burn very small
b. Laser milling b. Helical gears holes in the workpiece with high
c. Ultrasonic machining c. Hypoid gears dimensional accuracy.
d. Electronic erosion d. Herringbones gears a. Electrochemical machining
It produces usable pieces, leaving the Which of the following terms is b. Laser machining
source piece behind as scrap. applied to qualities such as time, c. Chemical milling
a. Punching volume and density? d. Electronic erosion
b. Drawing a. Couple The flash is trimmed off by _______ in a
c. Blanking b. Components subsequent operation:
d. Coining c. Resultants a. Pickling
The workpiece is held in position while d. Scalar b. Flash
the dies are hammered horizontally The changes in shape or geometry of c. Trimmer dies
into it from both sides. the body due to action of a force on it d. Upset
a. Gravity drop hammers or is called deformation or: The best materials for brake drums is:
board hammers a. Shear stresses a. Aluminum
b. Press forging b. Compressive stress b. Steel material
c. Powered hammers c. Stresses c. Cast iron
d. Impactor forging d. Strains d. Wrought iron
Reduce the workpiece area by cold Molten metal is poured into a metal or The use of hardened steel for the
flowing the metal into a die cavity by a graphite mold where pressure is not matting metal gear appears to give the
high compressive force or impact. used to fill the mold. best results and longer operational
a. Coining a. Sand molding life. The usual hardness is in the range
b. Embossing b. Plastic molding of:
c. Swaging c. Gravity molding a. Over 600 BHN
d. Blanking d. Non-gravity molding b. Below 350 BHN
In the gating system, the metal is The ratio of moment of inertia of the c. 300 to 400 BHN
poured into a sprue hole and enters a cross section of a beam to the section d. Over 400 BHN
vertical passage known as: modulus is _______? The repeated hammering of a work
a. Gates a. Equal to the radius of gyration piece to obtain the desired shape.
b. Downgate b. Equal to the area of the cross- a. Spring back
c. Draft section b. Blanking
d. Risers c. Multiplied by the bending c. Punching
A general term used to denote the moment of inertia to d. Forging
blanking, bending and forming and determine the yield stress
shearing of thin gage metals. d. A measure of distance
a. Presswork
b. Transfer die
It consist of two cranks, a stationary Stresses that are independent of loads Following forging, the part will have a
piece called the line of centers and is called __________. thin projection of excess metal known
the connecting rod is: a. Working stress as ________ at the parting line.
a. Five-bar linkage b. Simple stress a. Pickling
b. Three-crank linkage c. Residual stresses b. Flash
c. Four-crank braces d. Combined stress c. Trimmer dies
d. Four-bar linkage Used with dies and punches to form d. Upset
For an evenly distributed and uniform the work pieces. The properties of metal to withstand
wear on each meshing gear tooth, the a. Station loads without breaking down is:
ideal design practice is to consider a: b. Transfer die a. Elasticity
a. Wear resistance alloy addition c. Strip die b. Plasticity
to tooth gears d. Presses c. Strength
b. Heat treatment of the gears Poisson’s ratio is the ratio of d. Strain
c. Hardening of each tooth a. Elastic limit to yield strength Material having a high electrical
d. Hunting tooth addition b. Lateral deformation to the resistance and should not be ass
It is typically used in the manufacture longitudinal deformation conductor or electrical current
of printed circuit boards, is the c. Shear strain to unit strain a. Nickel
selective removal of material not d. Elastic limit to shear strength b. Silicon base alloys
protected by mask. It removes heat by electrolysis in high c. Aluminum oxide
a. Chemical milling current deplating operation. d. Iron oxide
b. Laser milling a. Electrochemical machining Difference between maximum
c. Ultrasonic machining b. Electronic erosion material limits of mating parts. Or it is
d. Electronic erosion c. Electrospark machining a minimum clearance or maximum
The operation of removing scrap d. Electrical discharge machining interference between parts:
blanks from the workpiece, leaving the Continuous stretching under load a. Tolerance
source piece as the final product. even if the stress is less than the yield b. Variance
a. Punching point. c. Fits
b. Drawing a. Plasticity d. Allowance
c. Clanking b. Creep The cast iron flywheels are commonly
d. Coining c. Elasticity designed with a factor of safety of
When an air entrainment agent is put d. Ductility _______.
into a concrete mix. What is the other name of electrolytic a. 14 to 15
a. The water/cement ratio must grinding? b. 8 to 9
be reduced a. Laser grinding c. 10 to 13
b. The strength will decrease b. Electrochemical grinding d. 6 to 12
c. Minimal effect c. Ultranic grinding With _______ the workpiece advances
d. The strength will suffer up to d. Chemical milling through a sequence operations:
50% When the motion is diminished/ a. Presswork
Generally applied on speed reducer decreasing instead of increasing is b. Brakes
due to large speed ratio: called: c. Tonnage
a. Bevel gears a. Deceleration d. Progressive dies
b. Worm gears b. Retarded motion For expensive tool materials, wear
c. Helical gears c. Uniform negative impulse ratios for the tool and workpiece vary
d. Hypoid gears d. All of these between:
It is simply defined as a simple push It is a work-supporting device which is a. 4:1
and pull. bolted to the saddle of the lathe b. 20:1
a. Power machine. It travels with the cutting c. 10:1
b. Work tool it is a prevention of the springing d. 8:1
c. Inertia away of the work piece from cutting The product of the mass and the
d. Force tools velocity of the center of gravity of the
the relative strength of a butt welding a. Rubber-flex collets body is called:
could be safety assumed as _____% b. Follower rest a. Linear momentum
efficiency. c. Tool post b. Linear impulse
a. 95 d. Carriage stop c. Angular impulse
b. 90 Helix angle in the range of ________ d. Angular momentum
c. 98 degree is recommended for wide-face With _______, a mold is produced by
d. 92 helical gears. packing sand around a pattern:
It is recommend not to have a direct a. Less than 15 a. Sand molding
drive between driven and drive b. 20 to 35 b. Gravity molding
sprockets if the ratio of their teeth c. Less than 20 c. Die casting
exceeds _______. Use 2 or more step d. 20 to 22 d. Plastic molding
combination. The differential of the shear equation Pitch diameter less the diameter of
a. 10 times is the: the roller chain is equal to:
b. 5 times a. Deflection of the beam a. Top land
c. 8 times b. Tensile strength of beam b. Addendum
d. 6 times c. Compressive strength of the c. Bottom diameter
beam d. Face overlap
d. Load on the beam
The distance between similar, To facilitate the removal of the pattern, d. Ultimate
equality-spaced tooth surface in a all surfaces parallel to the direction of Which of the following is the ratio of
given direction and along a given line: withdrawal are slightly tapered. This moment and stress?
a. Pitch circle taper is called: a. Strain
b. Pitch a. Gate b. Section modulus
c. Pitch plane b. Riser c. Contraction
d. Pitch diameter c. Sprue d. Passions ratio
The effective face width of a helical d. Draft What is the flexural stress when of a
gear divided by gear axial pitch: Almost always the soldering materials symmetrically cross-section beam
a. Approach ratio are combination of the following when the vertical shear is maximum.
b. Arc of recess alloys: a. Infinity
c. Arc of action a. All of these b. Zero
d. Face overlap b. Tin & antimony c. Maximum
A cold forming process that converts a c. Lead & tin d. Minimum
flat blank into hollow vessel. d. Lead & antimony The riveted joints in ASME Code has as
a. Embossing Which of the forces whose line of design surface compressive stress
b. Drawing actions are parallel but not ________ higher than the design tensile
c. Swaging necessarily equal in magnitudes? stress.
d. Punching a. Couple a. 70 %
With _______, the part shaped by a b. Resultant b. 60 %
slow squeezing reaction, rather than c. Non collinear c. 35 %
rapid impacts d. Non concurrent d. 50 %
a. Drop forging It is a general practice to use the What is the ratio of the following
b. Impact forging following allowable stresses 4000 psi minimum strength of joint to the
c. Press forging for main transmitting shaft and 8500 strength of solid in the pressure
d. Upset forging psi for small short shafts and counter vessel?
If shaft size is specified as-diameter shaft for lineshaft carrying pulley it is a. Efficiency
2.00° max. and 1.99° min. in diameter __________ psi. b. Relative strength
then the 0.010° could be defined as: a. 7800
c. Performance factor
a. Allowance b. 6000
d. Joint efficiency
b. Variance c. 7000
What is the usual factor of safety for a
c. Fit d. 6500 pressure vessel?
d. Tolerance It is used in the production of coins, is a. 4
Involves holding and applying a severe operation requiring high b. 1.5
pressure to round heated blanks. tonnage, due to the fact that the metal
c. 3
a. Upset forming flow is completely confined within the
d. 5
b. Flash die cavity.
It is the permissible variation of the
a. Coining
c. Pickling size.
b. Embossing
d. Parting time a. Tolerance
c. Swaging
The forging blows are repeated at the b. Limits
rate of more than 300 times a minute d. Blanking
c. Fits
for: It is the product of the resultant of all
d. None of these
a. Gravity drop hammers or forces acting on a body and the time.
Considering that there is no fit, what is
board hammers a. Linear momentum
the permissible liberal tolerance in
b. Press forging b. Angular momentum
machining work?
c. Powered hammers c. Linear impulse
a. + 0.010
d. Impactor forging d. All of these
b. + 0.090
When high strength and durability are A coupling that allows axial
c. + 0.020
a requirements for choosing gear flexibility/movement in the operation.
d. + 0.050
materials it is preferable to use Made of alternate bolting of steel,
Which of the following is a tolerance
__________ material. leather, fabric and/or plastic material
where the size of a part may ne larger
a. Hardened bronze into the two flanges
only, or smaller only, than the given
a. Flexible disk coupling
b. Phenolic laminated dimension?
b. Flexible Oldham coupling
c. Steel a. Unilateral
c. Flexible toroidal spring
d. White iron b. Lateral
coupling
Serve as accumulators to feed molten c. Bilateral
metal into the cavity during initial d. Elastic-material bonded
d. None of these
shrinkage coupling
A tolerance where the size of a part is
a. Gates For ordinary steel, the modulus of
permitted to be either larger or smaller
b. Downgate elasticity usually falls between ______
that the given dimension.
c. Draft million pounds.
a. Unilateral
a. 20 to 31
d. Risers b. Lateral
b. 35 to 45
The forging force blows are repeated c. Bilateral
at the rate of several times a minute c. 20 to 35
d. None of these
for: d. 25 to 30
Which of the following is the basis for
a. Gravity drop hammers or The modulus of elasticity for metals in
ASA fits?
board hammers compression is usually taken as that
a. Basic number system
b. Press forging in:
b. Basic hole system
a. Tension
c. Powered hammers c. Basic size system
b. Bearing
d. Impactor forging d. Unit system
c. Yield
When the hole is smaller than the In pressure vessels, which of the d. Lead scale
shaft, it will take force or pressure to following resists internal pressure What is the overall length of the spring
put the cold parts together. In such through tension? when it is compressed until all
case the allowance is negative. Which a. Shell-type element adjacent coils touched?
of the following terns si appropriate for b. Cam type element a. Free length
such allowance? c. Plate type element b. Solid length
a. Negative fits of metals d. Spherical type element c. Compressed length
b. Interference of metal It is the study of the body’s motion d. Expansion length
c. Positive fits of the shaft independent of the forces on the body. It is the length of coil spring under no
d. Intangible fits a. Kinetics load.
What is the direction of the b. Dynamics a. Compressed length
predominant surface pattern? c. Kinematics b. Free length
a. Smoothness d. Mechanics c. Solid length
b. Waviness What is the reciprocal of the velocity d. None of these
c. Lay ratio? In general, the steel springs are made
d. Roughness a. Train value of relatively of relative high steel
It is the irregularities of departures b. Ratio factor usually:
from the nominal surface of greater c. Modular value a. 5 %
spacing than roughness? d. None of these b. Less than 0.5 %
a. Waviness It is a type of bolt finished all over and c. More than 0.5 %
b. Roughness has usually having coarse threads. d. 7.5 %
c. Smoothness a. Coupling bolt It is a low spring material, suitable
d. Lay b. Stud bolt where service is not severe and
It is the surface finish of micrometer in c. Machine bolt dimensional precision is not needed
rms. d. Automobile bolt a. Helical spring wire
a. 1 It is a type of bolt distinguished by a b. Stainless steel
b. 2 short portion of the shank underneath c. Hard drawn wire spring
c. 3 the head being square or finned or d. Copper
d. 4 ribbed. What is the hard drawn (80%
Which of the following gears has the a. Coupling bolt reduction) spring wire made of high
simplest type of teeth? b. Stud bolt carbon steel?
a. Helical gears c. Machine bolt a. Oil tempered wire
b. Spur gears d. Carriage bolt b. Music wire
c. Bevel gears It is a type of bolt threaded on both c. Tension wire
d. Worm gears ends and can be used where a through d. Chromium wire
In gears, an imaginary circle on which bolt impossible. Which of the following wires with good
the lever arm is based in: a. Coupling bolt quality and us used for impact loading.
a. Base circle b. Carriage bolt a. Hard drawn wire
b. Pitch circle c. Stud bolt b. Song wire
c. Addendum circle d. Machine bolt c. Helical spring wire
d. Clearance circle Which if the following is not a type of d. Chromium – silicon wire
It is the circle tangent to the addendum bolt. When heat-treated wire is coiled cold.
of the meshing gears. a. Stud bolt It should be stress relieved for bending
a. Clearance circle b. Steel bolt stress and after cooling it is heated at
b. Base circle c. Machine bolt some:
c. Addendum circle d. Coupling bolt a. 400°F
d. Pitch circle It is a locking device that is used to b. 600°F
The distance form a point on one gear maintain pressure between threads of c. 700°F
to the corresponding point measured the bolt nut. d. 500°F
along the base circle. a. Gasket Which of the following is not a function
a. Normal pitch b. Lock washer spring?
b. Circular pitch c. Lock nuts a. Absorbs energy
c. Axial pitch d. Filler b. Source of potential energy
d. Diametral pitch What is the large wood screw used to c. Measure weight
A line passing through the pitch point fasten machinery and equipment. d. Measure thickness
that is tangent to both base circles of a a. Lag screw Which of the following is the type of
gear is: b. Loss screw spring made in the form of dished
a. Pressure line c. Wood screw washer?
b. Perpendicular line d. Cross screw a. Air spring
c. Tangent line What is the minimum length of contact b. Bellevile spring
d. Center line in a tapped hole for cast iron? c. Volute spring
Which of the following is the contact a. 1.7 D d. Motor spring
ratio for good gear design? b. 1.5 D What is the type of failure due to
a. 1.5 : 1 c. 1.2 D unstability?
b. 1 : 1.3 d. 2.1 D a. Buckling
c. 1 : 3 It is the ratio of the mean diameter of b. Slenderness ratio
d. 1.2 : 2 coil over the coil diameters. c. Stability
a. Wahl factor d. Euler’s failure
b. Spring index
c. Coil ratio
What type of formula that is the best The speed at which the center of mass c. Involute serrations
applied to very slender column? will be equal the deflecting forces on d. King pin
a. Column formula the shaft, the shaft with is attached What is the maximum shaft amgle for
b. Slenderness formulas bodies will then vibrate violently, since single Hooke’s
c. Moment formulas the centrifugal force changes its a. 10°
d. Euler formula direction as the shaft turns in: b. 17°
If two principal stresses is zero, the a. Nominal speed c. 15°
state of stress is: b. Critical speed d. 20°
a. Biaxial c. Relative speed What are the two principal parts of a
b. Mono-axial d. Mean speed Journal Bearing?
c. Uniaxial An old rule of thumb for transmission a. Bearing and journal
d. Triaxial shafting is that the deflection should b. Shaft and babbit
What do you call the system that have not exceed _______ of length between c. Clearance and fitted
finite values of principal stresses? supports. d. Shaft and cylinder
a. Triaxial a. 0.01 in. per foot
When the line of action of the load,
b. Uniaxial b. 0.08 in. per foot bisects the arc of partial bearing, the
c. Mono-axial c. 0.02 in. per foot bearing is said to be:
d. Biaxial d. 0.05 in. per foot a. Eccentricity loaded
A screw that requires positive torque to For transmission shafts the allowable b. Fully loaded
lower the load or loosen the screw if it deflection is 1 degree in a length of c. Centrally loaded
has been turned tight against a ______diameters. d. Partially loaded
resistance. a. 20
What is the difference in raddi of the
a. Self locking screw b. 25 bearing and Journal?
b. Lock screw c. 30 a. Even clearance
c. Self screw d. 40 b. Clearance ratio
d. Power screw What is the limiting torsional deflection c. Odd clearance
What is the rotating member used in for machinery shafts. If the criteria of d. Radial clearance
transmitting power? limiting torsional deflection vary from
a. Shaft 0.08° per foot of length.
When radii of both the bearing and the
b. Counter shaft a. 1°
journal are the same, then the bearing
c. Axle b. 2.5° is said to be:
d. Washer c. 2° a. Fitted bearing
For machinery shafts, the permissible d. 3.5° b. Clearance bearing
deflection is approximately: Bevel gears of sizes 5 in. to 15 in. c. Full bearing
a. 0.02 in./ft should not be lift or depress more than d. Ambiguous bearing
b. 0.03 in. in./ft _____, as Gleason statement.
What is the line that passes through
a. 0.004
c. 0.01 in./ft the centers of the bearing and the
b. 0.003 journals.
d. 0.05 in./ft
c. 0.002 a. Line of action
For shafts, the shear due to bending is
a maximum at the neutral plane where d. 0.001 b. Line of centers
the normal stress is: What type of key that allows the hub to c. Line of symmetry
a. Minimum move along that shaft but prevents the d. Tangent line
b. Constant rotation of the shaft?
Which of the following is considered
a. Woodruff Key
c. Maximum also advantageous for bearing materials?
b. Feather Key a. Comformability
d. Zero
c. Gibbs Key b. Compatibility
The minimum value of numerical
combined shock and fatigue factor to d. Square Key c. Embeddability
be applied in every case to the What is the other name for Kennedy? d. All of these
computed bending moment of the a. Tangential key
A conclusion repeatedly verified by
shaft is: b. woodruff key experiment is that the smoother
a. 2.0 c. Saddle key surface:
b. 1.75 d. Rollpin a. Has the greater load
c. 1.5 What type of fits used for involute capacity of the bearing
d. 1.3 spline? b. Has the lesser capacity of the
What is the other name given to short a. Close fit bearing
shafts on machines? b. Press fit c. Has constant load
a. Spindles c. Sliding fit d. None of these
b. Head shafts d. All of these Which of the following considers the
c. Core shafts It is used for permanent fits and similar 200 series of bearing?
d. All of these to involute splines except that pressure a. Heavy
The other name given to a line shaft is: angle is 14.5°. b. Medium
a. Countershaft a. Separation load
c. Light
b. Main shaft b. Spline shaft
d. All of these
c. Long shaft c. Stub serrations
Which of the following considers the
d. Head shaft d. Involute serrations 300 series of bearing?
It is used a coupling, or in addition to a. Medium
another couplings where, in case of b. Heavy
overload, there is danger of injury to
c. Light
machine or to material in process.
d. All of these
a. Shear pin
b. Flange coupling
A type of roller bearing in which the The two shafts at right angles to each Which of the following laws which
balls are assembled by the eccentric other may be connected by what states that the forces of attraction
displacement of the inner ring. arrangement? between two bodies is directly
a. Shallow groove ball bearing a. Half turn proportional to the production of their
b. Filling-slot ball bearing b. Quarter turn masses and inversely proportional to
c. Self-aligning ball bearing c. ¾ turn distance square between their centers.
d. Deep-groove ball bearing d. One turn a. Hooke’s law
Which of the following is not a type of The minimum number of teeth on a b. Law of gravitation
ball bearing? smaller sprocket for low speed is: c. Law of motion
a. Shallow groove ball bearing a. 12 d. Newton’s law
b. Filling-slot ball bearing b. 21 Any object thrown upward will return to
c. Self-aligning ball bearing c. 17 earth with the magnitude of the
d. Deep-groove ball bearing d. 14 terminal velocity equal to
Which of the following is not a type of The minimum number of teeth on a a. 50% of the initial velocity
ball bearing? smaller sprocket for moderate speed b. 80% of the initial velocity
a. Shallow groove ball bearing is: c. About 90% of the initial
b. Filling-slot ball bearing a. 17 velocity
c. Self-aligning ball bearing b. 21 d. The initial velocity
d. Deep-groove ball bearing c. 12 Flat belt that is too tight will induce
Which of the following is the d. 14 strain on the bearing and belt _______.
approximate density for the leather The minimum number of teeth on a a. Life will be shortened
belt? smaller sprocket for high speed is: b. Result to uneconomical
a. 0.035 lb/in.3 a. 21 operation
b. 0.0135 lb/in.3 b. 24 c. Suffer/shatter
c. 0.025 lb/in.3 c. 12 d. Will be sheared/cut
d. 0.0465 lb/in.3 d. 14 The resulting cross-sectional area of
A toothed wheel whose elements are The resultant of a pair of equal forces the tensile test specimen divided by
straight and parallel to the shaft axis or but opposite in direction is called: the specimen original area is called:
used to transmit motion and power a. Concurrent a. Charpy test
between parallel shafts. b. Couple b. % elongation
a. Helical gear c. Non-concurrent c. Impact test
b. Spur gear d. Resultant d. Izod test
c. Worm gear The helical and herring bones gear SAE 51XXX belongs to the ______ steel
d. Bevel gear teeth cut after heat treatment should family.
The breaking strength of oak-tanned have a hardness in the range of a. Carbon
beltings varies from 3 to more than: 210/300 BHN. The pinion gear teeth b. Chromium
a. 5 ksi hardness on the other hand, c. Manganese
b. 6 ksi ideally/normally should be at d. Nickel
c. 7 ksi ______BHN. In itself. It is a lubricant and usually
d. 9 ksi a. 250/320 one of the important elements in
Experience suggest that the most b. 350/380 casting non-ferrous metals like bronze,
economical designs are obtained for a c. 400 for example
belt speed of: d. 340/350 a. Antimony
a. 6000 to 7500 fpm As a rule the center to center distance b. Babbit
b. 3000 to 5000 fpm between sprocket should not be less c. Lead
c. 3500 to 4700 fpm than _____ times the diameter of the d. Zinc
d. 5000 to 1000 fpm bigger sprocket and not less than 30 Gasket material, which should avoid
The tension in the belt due to time the pitch nor more than about 50 hot liquid/steam applications.
centrifugal force increase rapidly times to pitch. a. Asbestos fiber
above about: a. 1.5 b. Nylon fiber
a. 2500 fpm b. 2 c. Rubberized
b. 3000 fpm c. 2.5 d. Wool
c. 3500 fpm d. 3 The same material properties all over /
d. 4000 fpm A single force, which produces the direction and at any particular point in
For the leather belts, recommended same effect upon a mass as two or a structural member is:
speed is: several forces acting together, is a. Heterogenous
a. 6000 to 7000 fpm called: b. Homogenous
b. 5000 to 6000 fpm a. Components c. Isentropic
c. 7000 to 8000 fpm b. Composition of Forces d. Isotropic
d. 4500 to 5600 fpm c. Resolution of forces For large speed ratio and large
The recommended initial tension of the d. Resultant sprocket utilized it is recommended
belt is: All forces in the same plane are called: cast _____ material since the large
a. 75 lb/in of width a. Coplanar sprocket teeth are having fewer
b. 73 lb/in of width b. Couple engagement.
c. 71 lb/in of width c. Parallel a. Alloyed steel
d. 80 lb/in of width d. Resultant b. Heat treated steel
c. Iron
d. Malleable iron
Roller bearing is utilized on ______ Which of the following gasket material In impact force introduced to cause
carrying capacity and is better than is not used for high temperature? the metal to flow in a shaped mold
ball bearing in this condition. a. Asbestos according to the shape to dies made.
a. Alloyed steel b. Plastic nylon a. Hardness
b. Heat treated steel c. Rubberized b. Spinning
c. Iron d. Wool c. Swaging
d. Malleable iron A plane perpendicular to the gear axis. d. Toughness
To enhance mechanical properties, a. Normal plane Forces of equal in magnitude but
fabrication characteristic or any other b. Pitch plane opposite in direction are parallel called
attributes of steel, some elements are c. Plane of rotation :
added in melting in specific ranges or d. Radius of gyration a. Acceleration
minimum aside from carbon and Specification of molybdenum alloy. b. Coplanar
generally termed: a. SAE 3XXX c. Couple
a. Alloy steel b. SAE 4XXX d. Non-coplanar
b. AISI steel c. SAE 5XXX Composition of force is at the ______ of
c. Bessemer steel d. SAE 6XXX two or more forces.
d. SAE steel A _____ chain is an assembly of lines a. Combination
Materials having thermal expansion of and joints. b. Opposition
about 10 times higher than those of a. Dynamic c. Resultant
metals and has more heat generated b. Kinetic d. Summary
during machining is: Circular pitch is measured along the
c. Sprocket
a. Aluminum _____ in the circular gear.
d. Static
b. Asbestos a. Circle
The recommended means of
c. Plastic b. Line of action
supporting the chuck during the
d. PVC mounting procedure to the lathe c. Pitch center
To hold to minimum, the axial direction spindle is to use : d. Pitch diameter
of deflection/movement, a separate a. Crane Stiffness is the material’s ability to
thrust bearing or preloaded bearing b. Jack _____ deformation under stress.
capable of absorbing considerable a. non-planar
c. Overhead
load is required. The type of bearing to b. planar
d. Ratchet
use is a _____ bearing.
Too much ______ in a flat belt operation c. resist
a. Deep grove ball
tend to cause excessive wear slippage d. stafer
b. Double row angular contract
and may burn the belt. The pipe color code in steam is :
c. Tapered roller bearing
a. load a. blue
d. Wide type self-aligning
b. lack b. gray
Pulley made of _______ ordinarily is 45
c. usage c. silver gray
to 55% less in weight and 2.35 to
d. tightness d. white
2.70% less slippage compared with
It is a chromium steel tape in AISI-SAE What method is used to measure the
_____ pulley
designation. yield point of some brittle materials?
a. Iron/steel
a. 10XX a. Offset ratio
b. Steel/iron
b. 25XX b. Modulus of resilience
c. Wood/Iron
c. 50XX c. Modulus measurement
d. Wood/steel
d. 40XX d. Parallelogram method
To avoid scoring in the bearing surface
Which of the following is not Wood pattern in the foundry is
and the shaft due to
recommended for use in a driving normally constructed out of:
contamination/absorption of the fine
speed exceeding 2000ft/min.? a. Dried sap wood
dirt in the bearing during
a. Flat leather belt b. Hard wood
operation/lubrication the bearing
material to apply should have good b. Herringbone gear c. Kiln dried wood
______ properties. c. Silent sprocket d. Scrap wood
a. Anti-scoring d. V-belt The progressive change in position of
b. Resistance conformability It is a low cost bearing used world wide ______ is called motion
c. Corrosion resistance for automobile or low horsepower a. Component
d. Embeddability motor applications. It is made of thin b. Couple
coating of over flat metal strip. c. Link
What do impact test measure?
a. babbitt d. Mass
a. Compactness
b. Cadmium brass Strain or ____ is a change in
b. Ductility
c. lead geometry/shape of the body due to
c. Plasticity
d. thin action of a force on it.
d. Toughness
The most common useful tools to a. Bending stress
Corresponding piping color for
measure diameter in machine shop b. Deformation
alkaline.
operation but normally and always c. Shear stress
a. Blue
used with steel scale for d. Stress
b. Green
measurement. The effective face width of a helical
c. Red
a. Caliper gear divided by the axial pitch. This is
d. Violet
b. Micrometer sometimes called face overlap.
Type of gear that transmits power at an
c. Protactor a. Angle overlap
angle.
d. Vernier b. Axial overlap
a. Bevel
b. Helix c. Contact overlap
c. Herringbone d. Helical overlap
d. Spur
For mass production of casting it is All stainless steel type is SAE Special bearing used with high
generally cheaper to use: _____ pattern designation except: deflection.
for longer life. a. 92 XX a. Babbitt
a. Aluminum b. 300 XX b. Ball
b. Brass c. 304 XX c. Roller
c. Metal d. 515 XX d. Self aligning
d. Wooden It is white metal with good oxidation For low load and less expensive
It is a plane between mating teeth or and corrosion resistance. This has also production.
the amount of which a tooth space good electrical magnetic properties. a. Babbitt
exceed the thickness of an engaging a. Aluminum b. Ball bearing
tooth is called: b. Copper c. Roller bearing
a. backlash c. Nickel d. Self aligning
b. clearance d. Titanium The lateral strain in axial tension
c. pitting It is a molybdenum steel-tape in AISI- members can be calculated by
d. space SAE designation a. Deformation
The forces that can be combined or a. 44 XX b. Hooke’s law
called component forces. b. 45 XX c. Poisson’s ratio
a. Different c. 50 XX d. Willan’s line
b. Helical d. 51 XX The most abundant being used in
c. Opposite Cutting lubricants used in drilling, automobiles worldwide is coated with
d. Parallel reaming and tapping for hard spots in _____ on top of the plate.
Plane of rotation is defined as plane cast iron. a. Babbitt
perpendicular to a a. Dry b. Lead
a. Gear axis b. Kerosene c. Manganese
b. Gear ratio c. Soda water d. Tin
c. Normal plane d. Turpentine A liquid metal at room temperature.
d. Pitch diameter In a ________ design, the lead of a a. Aluminum
Cutting lubricant used in drilling single thread equal to the pitch. b. Mercury
reaming, and tapping for brass and a. Bevel gear c. Zinc
bronze. b. Bolt d. Zirconium
a. Dry c. Helical gear Steel with SAE specification 13XX
b. Soda water d. Hypoid gear a. Chromium
c. Soluble oil A type of chisel used in cutting of b. Manganese
d. Turpentine keyways square corners or slots. c. Molybdenum
Non-concurrent forces when in action a. Cape d. Nickel
are: b. Diamond head Property, which enables a material to
a. Collinear c. Flat be drawn into a wire.
b. Couple d. Round a. Ductility
c. Parallel The maximum recommended b. Elasticity
d. Scalar ideal number of teeth to use for c. Plasticity
The general accepted limit of diamond bigger sprocket is: d. Utility
wheel speed should be in the range of a. 120 Heating the metal to a temperature
_____ fpm. b. 127 above the critical temperature and
a. 1000/2000 c. 132 from cooling slowly usually done in the
b. 2500/3500 d. 143 furnace to reduce the hardness and
c. 3000/4000 The teeth on the outer ring surface is improve the machinability is a process
d. 5000/6000 called the external gear: called
Prepared tool bit will now consist of a. Developed a. Annealing
face, nose and b. Flank b. Normalizing
a. Cutting tool c. Gear c. Quenching
b. Shank d. Involute d. Tempering
c. Sharp tool A bolt for general application that The stress that causes the material to
d. Tool edge posses a stronger thread is a type of shorten:
This is an alloy in bronze casting that _____ screw. a. Bearing
assists lubrication and in itself a a. BUN b. Compressive
lubricant: b. UNF c. Shear
a. Lead c. UNEF d. Tensile
b. Manganese d. WOOD The most known lubricants being
c. Phosphorus Maximum moment formula for beam utilized in whatever category of load
d. Tin simply supported at both ends and and speed are oil, air, grease and dry
For longer sprocket chain life the subject to a load uniformly distributed lubricants like
speed range of ______ fpm is over its length. a. Bronze
recommended. a. wL/2 b. Graphite
a. 1200-1400 b. wL2/8 c. Lead
b. 1500-1600 c. wL/8 d. Silicon
c. 1800-2000 d. wL/12
d. 2000-2100
Commonly used in parallel shaft d. Shield Roller bearing is utilized on _____
transmission especially when a Acceleration is proportional to the carrying capacity and is better than
smooth continuous action is essential force. ball bearing in thus condition.
as in high speed drives up to 12,000 a. Hooke’s law a. Heavy load
fpm. b. Law of gravitation b. High temperature load
a. Bevel gear c. Law of motion c. Low load
b. Helical gear d. Newton’s law d. Reversing load
c. Herringbone gear Which type of hardening will work to To enhance mechanical properties,
d. Spur gear some extent in all metals? fabrication characteristic or any other
The reciprocal of a diametral pitch or a. Annealing attributes of steel, some elements are
the ratio of the pitch diameter to the b. Austenitizing added in melting in specific ranges or
number of teeth. c. Martempering minimum aside from carbon and
a. Clearance d. Work hardening generally termed ___.
b. Involute Sound travels fastest in : a. Alloy steel
c. Lead a. Air at 0 °F and 1 atmosphere b. AISI steel
d. Module b. Air at 70 °F and 1 atmosphere c. Bessemer steel
What tool will be used in making wood c. Air at 70 °F and 0 lbf/in2 d. SAE steel
pattern in the foundry shop? d. steel at 70 °F Materials having thermal expansion of
a. Band saw The yield strength of common yellow about 10 times higher than those of
b. Drill machine brass (70%Cu, 30% Zn) can be metals and has more heat generated
c. Hammer increased by: during machining is:
d. Saw and chisel a. annealing a. Aluminum
Type of bolt commonly used in the b. Chill casting b. Asbestos
construction that is threaded in both c. Cold working c. Plastic
ends. d. Heat treatment d. PVC
a. Acme threaded bolts Forces not on the same plane are To hold to minimum, the axial direction
b. Hex bolts called _____ of deflection/movement, a separate
c. Square threaded a. Component thrust bearing or preloaded bearing
d. Stud bolt capable of absorbing considerable
b. Composition of forces
Ability of a material to absorb strain load is required. The type of bearing to
c. Non-coplanar
energy and will return to its original use is a _____ bearing.
d. Resolution
state. a. Deep grove ball
The distance between the center of
a. Creep b. Double row angular contract
oscillation and the point of suspension
b. Fatigue strength c. Tapered roller bearing
is called :
c. Hardness d. Wide type sdelf-aligning
a. Fix axis
d. Resilience Pulley made of _____ ordinarily is 45 to
b. Center of gravity
The ratio of lateral strain to longitudinal 55% less in weight and 2.35 to 2.70%
c. Center of percussion
strain. less slippage compared with _____
d. Radius of oscillation
a. Deformation pulley
If the velocity is variable and a. Iron/steel
b. Modulus of elasticity regularly/constantly increasing the rate
c. Poisson’s ratio b. Steel/iron
of change is called :
d. Willan’s line c. Wood/iron
a. Acceleration
Basic size is the same as design size of d. Wood/steel
b. Constant work
there is no : A plane perpendicular to the gear axis.
c. Moment
a. Allowance a. Normal plane
d. Motion
b. Clearance b. Pitch plane
The kinematics chain in which one link
c. Limits c. Plane of rotation
is considered fixed for the purpose of
d. Tolerance d. Radius gyration
analysis but motion is possible in other
Forces that meet at a common point links. The minimum value of numerical
are called : a. Belting combined shock and fatigue factor to
a. Co-linear be applied in every case to the
b. Frame
b. Concurrent computed bending moment of the
c. Mechanism
shaft is :
c. Coplanar d. Sprocket chain
a. 2.0
d. Couple The _____ is one of the rigid
b. 1.75
A pair of equal and opposite (not members/bodies joined together to
c. 1.5
collinear) forces that tend to cause a form a kinematic chain.
rotation of a body. d. 1.3
a. Coplanar
a. Centroids What is the other name given to short
b. Frame
b. Couple shafts on machines?
c. Link
a. Spindles
c. Equilibrium d. Machine
b. Head shafts
d. Vector For large speed ratio and large
c. Core shafts
Stress that resist being pulled apart. sprocket utilized it is recommended
a. Compressive d. All of these
cast _____ material since the large
b. Shear sprocket teeth are having fewer The other name given to a line shaft is :
engagement. a. Countershaft
c. Tensile
a. Alloyed steel b. Main shaft
d. Torsional
b. Heat treated steel c. Long shaft
Dynamic seals are also known as:
a. Gasket c. Iron d. Head shaft
b. Packing d. Malleable iron
c. Seal
The speed at which the center of mass d. 6 x 9 IWRC Which of the following is the
will be equal the deflecting forces on What is the maximum shaft angle for a approximate density if the leather belt
the shaft; the shaft with its attached single hooke’s coupling a. 0.035 lb/in^3
bodies will then vibrate violently, since a. 10 b. 0.0135 lb/in^3
the centrifugal force changes its b. 17 c. 0.025 lb/in^3
direction as the shaft turns in : c. 15 d. 0.0465 lb/in^3
a. Nominal speed d. 20 Which of the following is the
b. Critical speed What are the two principal parts of a approximate density of a fat rubber belt
c. Relative speed journal bearing a. 0.055 lb/in^3
d. Mean speed a. Bearing and journal b. 0.0135 lb/in^3
An old rule of thumb for transmission b. Shaft and babbit c. 0.045 lb/in^3
shafting is that the deflection should c. Clearance and fitted d. 0.0465 lb/in^3
not exceed _____ of length between d. Shaft and cylinder A toothed wheel whose tooth
supports. When the line of action of the load, elements are straight and parallel to
a. 0.01 in. per foot bisects the arc of partial bearing, the the shaft axis or used to transmit
b. 0.08 in. per foot bearing is said to be motion and power between the parallel
c. 0.02 in. per foot a. Eccentrically loaded shafts
d. 0.05 in. per foot b. Fully loaded a. Helical gear
For transmission shafts the allowable c. Centrally loaded b. Spur gear
deflection is 1 degree in a length of d. Partially loaded c. Worm gear
_____diameters. When radii of both the bearing and the d. Bevel gear
a. 20 journal are the same, then the bearing The breaking strength of oak tanned
b. 25 is said to be beltings varies from 3 to more than
c. 30 a. Fitted bearing a. 5ksi
d. 40 b. Clearance bearing b. 6ksi
What is the limiting torsional deflection c. Full bearing c. 7ksi
for machinery shafts, if the criteria of d. Ambiguous bearing d. 9ksi
limiting torsional deflection vary from Which of the following cannot be a Experience suggest that the most
0.08° per foot of length. poissons ratio of a material economical designs are obtained for a
a. 1 ° a. 0.35 belt speed of
b. 2.5 ° b. 0.40 a. 6000 to 7500 fpm
c. 2 ° c. 0.75 b. 3000 to 5000 fpm
d. 3.5 ° d. 0 c. 3500 to 4700 fpm
Bevel gears of sizes 5 in. to 15 in should A conclusion repeatedly verified by d. 5000 to 1000 fpm
not be lift or depress more than ____, experiment is that the smoother For leather belts, recommended speed
as Gleason statement. surface is
a. 0.004 a. Has the greater load a. 6000 to 7000 fpm
b. 0.003 capacity of the bearing b. 5000 to 6000 fpm
c. 0.002 b. Has the lesser capacity of the c. 7000 to 8000 fpm
d. 0.001 bearing d. 4500 to 5600 fpm
What type of key that allows the hub to c. Has constant load For fabric belts, recommended speed
move along the shaft but prevents the is
d. None of these
rotation of the shaft? a. 4000 to 5000 fpm
Which of the following considers the
a. Woodruf Key b. 3000 to 4000 fpm
200 series of bearing
b. Feather Key c. 2000 to 3000 fpm
a. Heavy
c. Gibbs Key d. 2000 and more fpm
b. medium
d. Square Key The tension in the belt due to
c. Light
What is the other name for Kennedy centrifugal force increasing rapidly
d. All of these
key? about
Which of the following considers the
a. Tangential key a. 2500 fpm
300 series of bearing
b. Woodruff key b. 3000 fpm
a. Heavy
c. Saddle key c. 3500 fpm
b. medium
d. Rollpin d. 4000 fpm
c. Light
What type of fits used for involute The recommended initial tension of the
d. All of these
spline? belt is
A type of roller bearing in which the
a. Close fit a. 75 lb/in of width
balls are assembled by the eccentric
b. Press fit b. 73 lb/in of width
displacement of the inner ring
c. Sliding fit a. Shallow groove ball bearing c. 71 lb/in of width
d. All of these b. Filling slot ball bearing d. 80 lb/in of width
It is used for permanent fits and similar c. Self aligning ball bearing Two shafts at right angles to each other
to involute splines except that the may be connected by what
d. Deep groove ball bearing
pressure angle is 14.5 °. arrangement
Which of the following is not a type of
a. Separation load a. Half turn
ball bearing
b. Spline shaft b. Quarter turn
a. Shallow groove ball bearing
c. Stub serrations c. ¾ turn
b. Filling slot ball bearing
d. Involute serrations d. One turn
c. Self aligning ball bearing
Which of the following has been
d. Deep groove ball bearing
considered as general purpose of rope
a. 6 x 19 IWRC
b. 7 x 25 IWRC
c. 7 x 25 IWRC
A statement of how the total moment Which of the following is used to An interrupted quenching process
is derived from a number of forces change the direction of an applied resulting in an autenite to banite
acting simultaneously at a point tensile force transition
a. Goodman’s theorem a. gears a. austempering
b. Soderberg’s theorem b. flywheels b. martempering
c. Varignon’s theorem c. pulleys c. austenitizing
d. Moore’s theorem d. ropes d. martenizing
A simple mechanical machine with the For most wire ropes and chains with The material will become progressively
ability to increase an applied force 180 deg contact, the loss factor at low stronger, harder and more brittle until it
a. hinges speed varies between eventually fails
b. roller a. 1.03 to 1.06 a. Hot working
c. lever b. 1.20 to 1.50 b. tempering
d. spring c. 1.07 to 1.10 c. Cold working
Any device used to raise or lower an d. 1.60 to 1.80 d. Normalizing
object A fine finishing operation similar to A swinging support constructed as part
a. hoist polishing what method to determine of the vessel and that supports the
b. roller the reactions on continuous beams manway cover when it is unbolted and
c. lever a. Two moment equations moved aside
d. spring b. Three moment equations a. nozzle
A measure of the materials ability to c. second moment equations b. handholes
yield and absorb highly localized and d. Third moment equations c. davit
rapidly applied stresses What is the best method for increasing d. orifice
a. hardness a spring’s fatigue life Which of the following is the measure
b. stiffness a. sprickling of torsional stress
c. toughness b. Stress relieving a. accuracy
d. resilience c. Shot peening b. Stiffness
A material can fail after repeated stress d. Shot relieving c. rigidity
loadings even if the stress level never The distance from a point on one gear d. quality
exceeds the ultimate strength to the corresponding point measured When tested in compression, ductile
a. Fatigue failure along the base circle materials usually exhibit ______
b. Ductile failure a. Diametral pitch characteristics up to the yield strength
c. Brittle failure b. Normal pitch as they do when tested in tension
d. Mechanical failure c. Circular pitch a. The same
The load at which a column fails is d. Chordal pitch b. More than
known as Which of the following is a single c. More than
a. Dead load measure that combines the external d. Approximately the same
b. Critical load dynamic load of an application with A tolerance where the size of a part is
c. Moving load the gear drive’s reliability and operating permitted to be either larger or smaller
d. Dynamic load life than the given dimension
The percentage difference in solid and a. Ratio factor a. bilateral
working deflections is knows as b. Reliability factor b. unilateral
a. Clash allowance c. Service factor c. lateral
b. Spring rate d. Life factor d. None of these
c. Spring allowance Describes very rough grinding such as A fit generally used on those
d. Spring index that performed in foundries to remove dimensions involved in a fit such as pin
A shafts natural frequency of vibration gates, fins and risers from casting in a hole
is referred to as the a. snagging a. unilateral
a. Normal speed b. lapping b. unilateral
b. High speed c. honing c. bilateral
c. Critical speed d. Snugging d. None of these
d. Low speed A fine grinding operation used to obtain It is relatively finely spaced
A fine finishing operation similar to exact fit and dimensional accuracy irregularities or surfaces
polishing using a very fine polishing, a. honing a. smoothness
using a very fine polishing compound b. lapping b. waviness
a. burnishing c. buffing c. lay
b. buffing d. burnishing d. roughness
c. calorizing The process of separating different It is the surface finish of heavy cuts or
d. electroplating sizes of the same material coarse feed
A process in which metal is dipped in a. screening a. 200rms
dilute acid solution to remove dirt, b. Seiving b. 400rms
grease and oxides c. Separation c. 80rms
a. pickling d. Fractioning d. 500 or greater rms
b. sheradizing The process of separating a material Which of the following is the most
c. polishing into a variety of specifically sized dominant cause (approximately 80%)
d. Parkerizing groups of machine failures
a. centrifuging a. torsion
b. sieving b. negligence
c. fractioning c. Fatigue failures
d. screening d. compression
For wrought iron steel in its commonly It is frequently used in bolt in c. Centroidal ratio
met commercial forms, it is often automotive and aircraft industries d. Column ratio
assumed that the average endurance a. UNC Under the theories of failure, for static
limit for an average Su (50% survival), b. UNEF loading of ductile material the design
the brinell hardness is limited to c. UNF stress is
a. 500 d. NC a. Yield stress / factor of safety
b. 400 Which of the following is a particular b. ultimate stress / factor of
c. 240 bolt used in aeronautical equipment safety
d. 450 a. UNC c. ultimate stress / proportional
What is the range of the endurance b. UNEF limit
ratio of Czaud quotes values of steel c. UNF d. Yield point/ proportional limit
a. 0.23-0.65 d. NC Under the theories of failure, the value
b. 0.34-0.87 What type of bolt usually used for high of shear stress is how many times that
c. 0.63-0.93 pressure pipe, flanges, cylinder head of the tensile stress
d. 0.34-0.45 studs etc a. Four times
A which of the following indicates the a. UNC b. Half
degree of concentration b. UNEF c. Double
a. Power factor c. UNF d. One fourth
b. Service factor d. 8 UN The theory mechanics of material
c. Stress factor It is the stress or load induced by the shows the results from the octahedral
d. Stress concentration factor tightening operation shear stress theory and those from the
A tolerance where the size of a part is a. Initial stress maximum distortion energy theory are
the internal stresses that exists in any b. Initial tension a. The same
part of the material that is subjected to c. Residual stress b. Less than
temperature and not acted upon by an d. None of these c. More than
external load For non metallic gaskets it has been d. Not related
a. Residual stress found that they should have a certain It is the distance measure axially from
b. Form stress minimum amount of compression as a point on one thread to the
c. Superposed stress ____ for a certain cork gasket corresponding point on an adjacent
d. Control stress a. 62% thread
It is the process that cold works a b. 86% a. Axial pitch
limited amount of material thus giving c. 68% b. z pitch
a higher strength, and it leaves a d. 76% c. lead
surface compressive stress It is a screw fastening with a nut on it d. Lead angle
a. Surface finishing a. bolt It is the angle between a tangent to the
b. tensioning b. U-bolt pitch helix and plane normal to the axis
c. surfacing c. Rivet of the screw
d. Surface rilling d. Screw a. Helix angle
Fatigue strength is increased by A fastening which has no nut and turns b. Lead angle
repeated loads just below the normal in to a threaded hole c. Tangent angle
fatigue limit, followed by small step by a. bolt d. Vertical angle
step increase of the loading b. fastener It is suggested that the design factor on
a. coaxing the yield strength be about 1.5 for the
c. rivet
b. triaxing smoothe load about 2 to 2.25 for minor
d. screw
c. mixing shocking loading and up to___ for sever
An old name for an unfinished through
d. relieving bolt comes with a square shock loads, especially when the
It is the diameter of the imaginary a. Coupling bolt loading reverses during operation
cylinder that bounds the crest of an b. studbolt a. 4.5
external thread and the roots of an
c. Machine bolt b. 3.5
internal thread
d. Auto mobile bolt c. 3.0
a. Mean diameter
It is a type of coil where the helical d. 4.0
b. Root diameter
coils wrapped into a circle forming an A typical hub length fall between
c. Stress diameter
annular ring a. 1.25D to 2.5D
d. Major diameter a. Volute spring b. 1.3D to 3.4D
It is the distance in inches a screw b. Hair spring c. 1.25D to 4.0D
thread( a helix) advances axially in one
c. Motor spring d. D to 7.0D
turn
d. Garter spring A key that are square or flat and
a. pitch
It is a type of spring where thin flat strip tapered with head
b. Mean pitch
wound up on itself as a plane spiral, a. Pin key
c. lead
usually anchored at the inside end b. Gib head key
d. Circular pitch a. Motor spring c. Saddle keys
Which of the following bolts is b. Hair spring
recommended for general use d. None of these
c. Motor spring A key that may either straight or
a. UNC
d. Garter spring tapered. It is usually a drive fit
b. UNEF
It is the ratio of the length of the a. Pin key
c. UNF
column and the radius of gyration of b. Gib head key
d. NC the cross sectional area about a c. Saddle keys
centroidal axis d. None of these
a. Contact ratio
b. Slenderness ratio
A key with one several patented At higher temperatures oil oxidizes
methods of keying is driven or pressed more rapidly above
into a hole that is small enough to a. 120F
close slit, assembled in radial direction b. 200F
a. fit key c. 140F
b. Roll pin d. 160F
c. Saddle keys For thrust bearing, the speed at
d. Pin key moderate operating condition is
A key that that allows the hub to move a. 50 <Vm> 200 fpm
along the shaft but prevents the b. 50 <Vm> 250 fpm
rotation of the shaft c. 50 <Vm> 220 fpm
a. woodruff key d. 50 <Vm> 250 fpm
b. Gibs key If the ends are joined by wire lacing
c. feather keys with machine the usual efficiency of
d. Square key joint is
For involute spline the type of fits used a. 100%
a. Close fit b. 75%
b. Sliding fit c. 85%
c. Press fit d. 88%
d. all of these On the high speed centrifugal blowers
A coupling that transmit power via the it has been observed that the arc of
fractional forces induced by pulling the contact is reduced from 180 deg at rest
flange toward each other over slotted to ______ in motion
tapered sleeves a. 100deg
a. Flange coupling b. 90deg
b. Ribbed compression coupling c. 95deg
c. Rigid coupling d. 110deg
d. Flanged compression The recommended net belt pull for
coupling rubber belt is
A coupling used to absorbing some a. 11.34 lb/ply per inch width
shock and vibration that may appear b. 13.75 lb/ply per inch width
on one shaft and of preventing the c. 16.35 lb/ply per inch width
occurance of reversed stresses caused d. 20.34 lb/ply per inch width
by the shaft deflecting at the coupling For minimum quietness use sprockets
preventing at the coupling with or more teeth
a. Flange coupling a. 21
b. Flange coupling b. 23
c. flexible coupling c. 25
d. None of theses d. 27
It is the difference in the radii of the Wire ropes are made from cold drawn
bearing and the journal with ____ or more teeth
a. Even clearance a. 21
b. Clearance ratio b. 23
c. Fit clearance c. 25
d. Radial clearance d. 27
A bearing in which the radii of the A wire rope that the wires and strands
journal and the nearing are the same are twisted in the opposite direction
a. Fitted nearing a. Long lay
b. Full bearing b. perform
c. Partial bearing c. Regular lay
d. Clearance bearing d. Lang lay
What is the approximate length to A wire rope that the wires and strands
diameter ratio of hydrodynamic are twisted in the same direction
bearings a. Long lay
a. 1 b. perform
b. 4 c. Regular lay
c. 3 d. Lang lay
d. 2 Which of the following ropes is used for
If two intersecting shafts are to be belt haulage, rigging guard rails
connected guide pulleys are to be used a. 6 x 35 IWRC
a. 1 b. 6 x 17 IWRC
b. 2 c. 7 x 8 IWRC
c. 3 d. 7 x 7 IWRC
d. 4
The operating temperature of oil films
in the bearing must approximately
a. 140 F to 150F
b. 140 F to 160F
c. 120 F to 190F
d. 120 F to 190F