1.

In order to avoid dulling of cutter, climb milling

9. A universal dividing head is used to perform a milling
operation should never be used when millling parts
opeation by
made of
a. plain indexing
a. magnesium parts made of
b. direct indexing
b. cast iron
c. differential indexing
c. mild steel
d. compound indexing
d. non-ferrous materials
e. complex indexing
e. stainless steel
2. Standard milling arbon size is
10. Standard taper generally used on milling machine
a. 25.4 mm
spindles is
b. 27 mm
a. Morse
c. 32 mm b. Brown and sharpe
d. 31.75 mm c. Chapman
e. all of the above d. Seller's
e. Metric
For sharpening milling cutters, the width of the land
3. Milling machine is classified as horizontal or vertical type, 11. can be reduced by grinding
depending on the position of
a. primary clearance angle
a. spindle
b. secondary clearance angle
b. b. workpiece
c. rake angle
c. milling cutter
d. suitable nose radius
d. work table or bed e. knee
e. back face
4. Burnishing is an opeation of 12. Dovetail milling cutter falls under the category of
a. heat treatment a. a plain milling cutter
b. deep boring b. a side milling cutter
c. gear finishing c. an end milling cutter
d. surface treatment d. a shaping tool
e. producing gears e. fly cutter

5. To obtain fine finish cuts in milling

a. the cutting speed should be decreased and the 13. A perfect square on the end of a round shaft can be
feed increased milled by mounting it on
b. the cutting speed should be increased and the feed a. a differential
decreased b. a compound rest
c. both the cutting speed and feed should be c. an index plate
decreased d. a dividing head
d. both the cutting speed and feed should e increased e. universal table
e. there is no such criterion
6. The arbor of the milling machine is used to hold In helical milling, the ratio of the circumference of the
a. cutting tool 14. gear bank to the lead of the helix gives the
b. spindle a. angle setting of the machine table
c. over arm b. proper speed to use
d. mandrel c. proper feed and depth of cut required
e. workpiece d. no. of teeth to be cut
e. gear ratio for table screw and dividing head

15. Plain milling cutters should be

7. Very thin chips with end mills
a. smaller than the width of the flat surface to
a. dull the cutting edge mills
be measured
b. improve tool life
b. wider than the flat surface to be machined
c. sharpen the cutting edge
c. equal to width of flat surface to be machined
d. cause chipping of the cutting edge
d. there is no such criterion
e. cause tool breakage
e. none of the above
8. Stagger tooth milling cutters in comparison to straight 16. The accurate spacing of teeth in a gear blank requires
tooth side mills the use of
a. permit smoother cutting action a. a dividing head
b. have alternate helical teeth b. an index plate
c. have more chip clearance c. a gear tooth vernier
d. permit deeper cuts d. a differential table
e. all of the above e. universal table
7- Helical gears can be cut on following type of milling center lathe must be supported in
machine 3- jaw chuck
a. vertical b. 4-jaw chuck
b. horizontal c. live center
c. universal d. steady rest
d. drum-type e. collet
e. multi spindle
16- It is required to index 119 divisions. It can be done
18- Feed rate in milling operation is expressed as by
a. mm/tooth a. simple indexing
b. mm/r.p.m. of the milling cutter b. direct indexing
c. meters/minute c. compound indexing
d. revolution per minute d. differential indexing
e. mm e. any one of the above

19- Milling cutters are mounted on a part called the 17- One of the important parameters of lathe
a. bracket or specification is
b. brace a. swing over tool bed
20- Power requirement, with increase in cutting speed b. swing over tool post
a. more or less remains constant c. distance between centers
b. increase linearly d. horse power
c. decreases linearly e. bed length
d. unpredictable
a. none of the above 18- A quill is a
a. tool holding device
20- The angle between the face of the blade and a line b. work clamping device
passing through the nose parallel to the milling c. tool used for milling operation
cutter axis is called d. device used in heat treatment operation
a. axial rake e. steel tube in the head of some machine tools
b. radial rake that enclose the bearings of rotating spindles
c. relief angle on which are mounted the cutting tools
d. clearance angle
e. lip angle 19- The different speeds on a lathe are provided in
a. arithmetical progression
21- Negative rake is usually provided on b. harmonical progression
a. H.S.S. tools c. geometrical progression
b. high carbon steel tools d. any one of the above
c. cemented carbide tools e. none of the above
d. all of the above
e. none of the above 20- Centring can be done most accurately on
a. four jaw chuck
22=Side relief angle of a single point tool is the angle b. three jaw chuck
a. by which the face of the tool is inclined c. collet chuck
sideways d. magnetic chuck
b. by which the face of the tool is inclined e. all of the above
towards back
c. between the surface of the flank immediately 21- Small sized cylindrical jobs on engine lathe are held in
below the point and a line drawn from the a. three jaw chuck
point perpendicular to the base b. four jaw chuck
d. between the surface of the flamk immediately c. lathe dog
below the point and a plane at right angles to d. mandrel
the center line of the point of the tool e. collet
e. none of the above
22- In gang milling
13- A left hand tool on lathe is used for turning in the a. several jobs can be performed in one set up
direction b. one job is completed on several milling
a. from right to left machines located together
b. from left to right c. two or more cutters are mounted on the arbor
c. across the bed and all of them remove the metal
d. in angular position on compound slide simultaneously
e. any direction d. all of the above
e. none of the above
14- Counterboring is the operation of
a. enlarging the end of a hole cylindrically 23- Spot facing is the operation of
b. cone-shaped enlargement of the end of a hole a. enlarging the end of a hole cylindrically
c. smoothing and squaring the surface around a b. cone-shaped enlargement of the end of a hole
hole c. smoothing and squaring the surface around a
d. sizing and finishing a hole hole
e. none of the above d. sizing and finishing a hole
e. none of the above
15- heavy speed shafts to be turned by carbide tools on
24- Trepanning operation is performed for
a. finishing a drilled hole 31- Counter-sinking is the operation of
b. truing a hole for alignment a. enlarging the end of a hole cylindrically
c. producing large hole b. cone-shaped enlargement of the end of a hole
d. sizing a small hole c. smoothing and squaring the surface around a
e. none of the above hole
d. sizing and finishing a hole
25- A T-slot is milled in e. none of the above
a
a. single 32- For fast metal removal rate on lathe, it is
operation recommended to
b. two a. increase speed
operations b. use hot machining
c. three c. use carbide tool
operations d. use abundant supply of coolant
d. four e. use roughing cut
operations
e. none of the 33- Segmented chips are formed when machining
above a. ductile metal
b. brittle material
25- End mills designed for cutting aluminum have c. heat treated material
a. fast helix angle d. with lot of pressure and heat against the tool
b. highly polished flutes e. none of the above
c. highly polished cutting edges
d. all of the above 34- Machinability
e. none of the above a. tends to increase with increase in hardness
b. tends to decrease with increase in hardness
26- The part of the back of tooth adjacent to the cutting c. remains unaffected with hardness
edge which is relieved to avoid interference d. b is correct in general, but it can be drastically
between the surface being machined and the cutter influenced by strain hardening and
is called microstructure
a. land e. none of the above
b. fillet
c. face 35- machinability depend on
d. cutting edge a. microstructure, physical and mechanical
e. relief angle properties and composition of workpiece
material
27- The center of an existing hole is located b. cutting forces
a. by hit and trial c. c. type of chip
b. by callipers d. tool life
c. using dividing head e. profile of workpiece
d. with a dial indicator mounted in the machine
spindle 36-Machinability tends to decrease with
e. not possible a. increase in hardness and increase in tensile
28- When locating a number of positions on a strength
workpiece, the backlash in the machine screws b. increase in strain hardening tendencies
can be eliminated by c. increase in carbon content, hard oxide and
a. backlash device carbide
b. using new screw d. decrease in grain-size
c. positioning the work piece always from the e. all of the above
same direction
d. first taking it forward and then backward 37- Machinability can be calculated and predicted by
e. not possible following factor
a. tensile strength
29- Drill press size is determined by b. brinell hardness
a. the largest drill that will fit the machine c. shear angle
b. the larger piece of work that will fit the d. all of the above
machine e. none of the above
c. the largest diameter work that can be drilled on
center 38- Ideal chip is
d. size of table a. heavy continuous chip
e. none of the above b. lighter continuous chip
c. tightly curled continuous chip
30- When a workpiece requires several operations such d. short, broken chip
as drilling, counter-boring, reaming etc., the e. none of the above
following machine should be used
a. radial drilling machine 39- Shear angle varies with
b. multispindle drilling machine a. different materials and with tool geometry
c. hand drilling machine b. cutting speed
d. gang-drilling machine c. feed
e. none of the above d. machine used
 e. none of the above a. becomes smaller and finally does not form at
all
40- continuous chips are formed when machining b. becomes bigger
a. metal c. has nothing to do with speed
b. brittle material d. may or may not form depending on other
c. heat treated conditions
d. with lot of pressure and heat against the tool e. none of the above
e. none of the above 50- Carbide tools wear out faster at
a. slow speeds
41- A 50 taper over 5 mm length is to be made on a 100 b. medium speeds
mm diameter job. Which method should be used ? c. fast speeds
a. taper turning attachment d. very fast speeds
b. tailstock offset method e. speed is no criterion for wear
c. compound rest method
d. form tool method 51- Which of the following tools are harder and more
e. any one of the above wear resistant than tungsten carbide but are weaker
in tension
42- Chip breakers are provided on cutting tools a. low carbon steel tools
a. for safety of operator b. high carbon steel tools
b. to minimise heat generation c. H.S.S. tools
c. to permit easy access of coolant at tool point d. ceramic tools
d. to permit short segmented chips e. none of the above
e. to increase tool life
52- Ceramic tips are prepared from
43- Tool life is said to be over when a. tungsten powder
a. finish of work becomes too rough b. carbon powder
b. chips become blue c. aluminum oxide powder
c. chattering starts d. silicon carbide powder
d. cutter looks dull e. H.S.S. powder
e. a certian amount of wear or cratering occurs on
the flank 53- Which of the following are cast alloys containing
tungsten and chromium carbides in a matrix of
44- In the Taylor equation VTn = C, value of index n is cobalt and chromium
closely related to a. mechanites
a. workpiece material b. tungsten carbides
b. cutting tool material c. bakelites
c. working conditions d. stellites
d. temperature at chip tool interface e. ceramics
e. none of the above
54- Carbide tips are fixed to the shanks of cutting tools
45- Wear limit on cutting tool is of the order of by
a. 0.2 mm a. forging
b. 0.8 mm b. sintering
c. 1.6 mm c. welding
d. 2.5 mm d. soldering
e. none of the above e. brazing

46- To remove maximum material per minute with the 55- The most wear-resistant grade of carbide used for
same tool life cutting tools is the straight
a. increase depth of cut iron carbide b. calcium carbide
b. increase feed rate c. tungsten carbide d. nickle carbide
c. decrease cutting speed e. aluminum carbide
d. increase cutting speed
e. all of the above 56- With increase in cutting speed, the finish
a. improves considerably
47- The included angle between the land and the face b. improves slightly
of the tooth is called c. remains same
a. rake angle d. gets poor
b. lip angle e. gets poor or improves depending on work
c. relief angle material
d. primary clearance angle
e. axial rake 57- When turning a long shaft on a lathe, its bending can
be prevented by
48- The last element in the tool signature is a. running the shaft at low speed
a. back rake angle b. using low feed
b. side rake angle c. using low depth of cut
c. nose radius d. using sturdy machine
d. end cutting edge angle e. using steady rest
e. side-relief angle
58- In oblique cutting system, the chip thickness is
49- As cutting speed increases, the built up edge a. maximum at middle
 b. maximum at sides a. copying
c. minimum at middle b. NC machine
d. uniform throughout c. transfer machine
e. none of the above d. electro-chemical milling machine
e. non-conventional machines
59- Finish is more affected by
a. cutting speed 68- The purpose of providing relief or clearance angles
b. depth of cut on tools is to
c. feed-rate a. permit chip formation
d. lubricant b. facilitate easy flow of chips
e. none of the above c. strain harden the material
d. strengthen the tool
60- Best method of increasing the rate of removing e. prevent tool from rubbing on the work
metal is
a. incease speed 69- High speed tools compared to carbon steel tools
b. increase feed-rate operate at
c. increase depth of cut a. same speed
d. increase nose radius f. 2-3 times higher speed
e. supply more quantity of lubricant g. 2-3 times lower speed
h. 3-5 times higher speed
61- Cemented carbide tools wear faster at i. 5-8 times higher speed
a. high speed
b. very high speed 70- The following cutting fluid is used when milling with
c. medium speed carbide tipped milling cutter
d. very low speed a. kerosene
e. none of the above b. lard oil
c. water
62- The machining operation of cutting a keyway inside d. CO2
a drilled hole is known as e. dry
a. reaming
b. broaching 71- which of the following is not a multipoint cutting tool
c. boring a. drill
d. tapping b. reamer
e. counter sinking c. milling
d. parting tool
63- The process of trimming is associated e. grinding wheel
with
a. forging
b. electroplating 72- Which of the following machines utilise fly cutter ?
c. machining a. lathe
d. polishing b. planer
e. press work c. shaper
d. broaching
64- The numerical control system which is applicable e. milling machine
to a milling machine is called the
a. point to point system 73- Pick up the correct statement for milling
b. continuous path system a. cutter is rotated in the opposite direction of
c. zig-zag machining system travel of job
d. straight cut-system b. thickness of chip is maximum at the
e. contouring system beginning of cut
c. cutting force is directed downwards
65- The broaching operation in which the work moves d. coolant can be easily poured on the cutting
past the stationary tool is called edge
a. pull broaching e. all of the above
b. push broaching
c. surface broaching 74- A right hand tool is one which is used to
d. continuous broaching a. start a cut from tailstock and cut toward
e. full broaching the headstock
b. start a cut from head stock and cut toward
66- The point to point system of numerical control can
the tailstock
be applied only to the conventional
c. start facing at the center and cut outward
a. drilling machine or jig boring operations
d. both 'a' and 'c' are correct
b. milling operations
c. shaper operations e. both 'b' and 'c' are correct
d. lathes
e. grinder 75- For turning mild steel, type of tool used is
a. left hand type
67- The following machine should be specified when b. right hand type
complex parts in short run quantities with c. any one of the two
d. depends on cutting angles and tool material
variation have to be produced
e. none of the above
 a. coarser grain size is used
76- Negative rakes are used for b. fine grain size is used
a. heavy loads c. medium grain size is used
b. harder materials d. any grain size may be used
c. carbide tools e. none of the above
d. all of the above
e. none of the above 86- Which abrasive particle would you choose for
grinding bronze valve bodies
77- Purpose of side rake is to a. silicon carbide
a. avoid work from rubbing against tool b. aluminum oxide
b. control chip flow c. diamond
c. strengthen tool edge d. cubic boron nitride
d. break chips e. none of the above
e. shear off the metal
87- Which abrasive particle would you choose for
78- A grinding wheel gets glazed (shining cutting grinding high speed steel tools
edges) due to a. silicon carbide
a. wear of abrasive grains b. diamond
b. breaking up of abrasive grains c. diamond
c. wear of bond d. cubic boron nitride
d. cracks of grinding wheel e. none of the above
e. embedding of fine chips and metal powder on
wheel 88- For grinding operation in which heat generation
79- In grinding operation, for grinding softer materials must be kept minimum, the following bond of
a. coarser grain size is used wheel must be used
b. fine grain size is used
a. resinoid rubber
c. medium grain size is used
b. silicate
d. any grain size may be used
c. vitrified
e. none of the above
d. shellac
e. any one of the above
80- Maximum cutting angles are used for machining
89- Holes in parts which have been hardened by heat
a. mild steel
treatment can be finished to accurate size only by
b. cast iron
c. free machining steels a. drilling
d. nickle alloy b. boring
e. aluminum alloys c. internal grinding
d. reaming
81- A work on the milling machine can be indexing by e. any one of the above
a. universal milling attachment
b. chasing dial 90- Which of the following is an example of snag
c. dividing head attachment grinding
d. manipulating vertical and horizontal a. removing excess metal on weld
movements b. grinding a parting line left on casting
e. rotary tables c. trimming the surface left by sprues and rises
d. removing flash from sorgings
82- In tool signature, nose radius is e. all of the above
indicated
a. in the beginning 91- The grit size of the abrasives used in the grinding
b. at the end wheel is usually specified by the
c. in the middle hardness number
d. not indicated size of the wheel
e. none of the above softness or hardness of the abrasive
mesh number
83- Reaming is the operation of refractive index
a. enlarging the end of a hole cylindrically
b. cone shaped enlargement of the end of a hole 92- A grinding wheel gets glazed due to
c. smoothing and squaring the surface around a wear of abrasive grains
hole wear of bond
d. sizing and finishing a hole breaking of abrasives
e. none of the above cracks in wheel
sharpening of wheel
84- Which of the following is fastest method of cutting
gears 93- In grinding practice, the term "hardness of the
a. milling wheel" or "grade of the wheel" refers to
b. gear shaping hardness of the abrasives used
c. gear hobbing strength of the bond of the wheel
d. gear burnishing finish of the wheel
e. all of the above hardness of the workpiece
type of abrasive used
85- In grinding operation, for grinding harder material 94- Which abrasive particle would you choose for grinding
tungsten carbide tool inserts 95- Which of the following is the natural abrasive
silicon carbide
a. Al2O3
aluminum oxide b. SiC
diamond c. boron-carbide
cubic boron carbide d. corundum
none f the above e. boron

96- Which of the following is the manufactured abrasive d. garnet

a. corundum e. glass
b. quartz
c. emery 104- Aluminum oxide wheel would be selected for
d. SiC grinding
e. diamond a. cast iron
b. cemented carbide
97- Which abrasive particle would you choose for c. ceramic materials
grinding steel fittings d. HSS
a. silicon carbide e. all of the above
b. aluminum oxide
c. diamond
d. cubic boron nitride
e. any one of the above

98- Which bond is used in cut off wheels

rubber
vitrified
resinoid
shellac
any one of the above

99- Which of the following abrasive will be used for

grinding ceramics
a. diamond
b. Al2O3
c. SiC
d. boron carbide
e. none of the above

100- Pick up the incorrect statement about grinding

a. for cutting soft material, hard wheel is used
b. for cutting hard material, hard wheel is used
c. for grinding soft material, dry condition is
required
d. for grinding hard material, wet condition is
required

101- Pick up the wrong statement

a. for grinding hard as well as brittle materials,
fine grained grinding wheel is used
b. for grinding metal at fast rate, coarse
grained wheel is used
c. for grinding hard materials, soft grade is
used and vice versa
d. for grinding soft material, fine grain is used
e. for grinding soft and ductile materials,
coarse grained wheel is used

102- A slight taper on the full length of a long shaft

mounted between centers on a universal cylindrical
grinder, can be ground by
a. off setting the tail stock
b. swivelling the table on its base
c. swivelling the wheel head
d. swivelling the workpiece
e. taper turning attachment

103- What kind of abrasive cut-off wheel should be

used to cut concrete, stone and masonry ?
a. SiC
b. Al2O3
c. diamond grit
 109. The grit, grade and structure of grinding wheels for
105. Grinding wheel is flooded with coolant in order to specific operations are based on
a. remove chips a. grinder clearance
b. remove heat b. spindle size of the grinder
c. clean the wheel c. diameter of wheel
d. clean the job d. speed at which the wheel is to be used
e. clean the machine e. thickness of wheel

106. Hardness of grinding wheel is determined by 110. When it is required to run a grinding wheel safety at
a. the resistance exerted by the bond against grinding very high speed, following bond should be used
stress a. vitrified
b. hardness of abrasive grains b. shellac
c. hardness of bond c. silicate
d. its ability to penetration d. resinoid and rubber
e. its ability to work without scratches e. any one of the above

107. The process of improving cutting action of grinding 111. In grinding operation, for grinding softer material
wheel is called a. softer grade is used
a. dressing operation b. high grade is used
b. turning operation c. medium grade is used
c. cutting operation d. any grade may be used
d. facing operation e. none of the above
e. clearing operation

108. In cylindrical grinding operations, the work compared to 112. Crack is developed in grinding wheel due to
grinding wheel is always rotated a. generation of heat
a. at a much slower speed b. high speed
b. at a much faster speed c. slower speed
c. at the same speed d. hard work
d. at 100 rpm more e. none of the above
e. there is no such correlations

113. In grinding operation, for grinding harder material a. it is less tough than SiC
a. softer grade is used b. it is suitable for high tensile strength
b. high grade is used material
c. medium grade is used c. it is used for grinding hardened steel, hard
d. any grade may be used bronze, steel billets etc.
e. none of the above
d. it is less hard than SiC
e. it is more shock resistant
114. The following material is used for diamond
lapping
118. Ball grinding compared to cylindrical and flat
a. HSS
grinding requires
b. copper
c. aluminum oxide a. harder wheel
d. high carbon steel b. softer wheel
e. none of the above c. medium wheel
d. harder/softer wheel depending on material
115. A dense structure in grinding wheel is used for e. softest wheel
a. heavy cuts
b. ductile material 119. Hard materials require
c. elastic material a. fine grit sizes and hard grades
d. hard material b. coarse grit and hard grades
e. finishing cuts c. coarse grit sizes and soft grades
d. fine grit sizes and soft grades
116. Pick up the incorrect statement about Al2O3 e. none of the above
grinding wheel
120. Soft ductile materials require
a. fine grit sizes and hard grades
b. coarse grit sizes and hard grades
c. coarse grit sizes and soft grades
d. fine grit sizes and soft grades
e. none of the above

121. When the grains of a grinding wheel become

dulled, then it needs to be
a. replaced
b. trued
c. dressed
d. treated
e. reground

122. The hardness of a grinding wheel os specified by

a. BHN
b. Rockwell hardness number
c. LPN
d. search test
e. letter of alphabet

123. A grinding wheel is balanced as follows so that

it will not vibrate
a. putting balancing weights on the wheel
b. enlarging the spindle hole
c. using wheel dampers
d. dressing the wheel with dressing tool
e. none of the wheel

124. The operation of sharpening a grinding wheel is

called
a. trueing
b. dressing
c. aligning
d. balancing
e. bonding

125. The most popular chuck used on surface grinders

is
a. pneumatic chuck
b. hydraulic chuck
c. three-jaw chuck
d. magnetic chuck
e. independent chuck