REFRESHER SESSION 4

ELECTRICAL TOOLS AND MATERIALS

Tool
A tool is a device that can be used to produce an item or
accomplish a task, but that is not consumed in the process.
TYPES OF ELECTRICAL TOOLS
• 1.Hand tools are tools manipulated by hands without using
electrical energy such as: puller, hacksaw, pull-push rule,
pliers, hammer, and others
• 2. Machine/Power tools are tools manipulated by our hands
and with the use of electrical energy such as: electric drill,
grinding wheels, vacuum cleaner and others.
• 3.Pneumatic tools are tools or instruments activated by air
pressure. Pneumatic tools are designed around three basic
devices: the air cylinder, the vane motor, and the sprayer.
• 4. Hydraulic Tools are tools or instruments activated by fluid
pressure. Examples, hydraulic jack and hydraulic bender.
COMMON ELECTRICAL HAND TOOLS
SCREW DRIVERS. These tools are made of steel hardened and tempered at the tip
used to loosen or tighten screws with slotted heads.
1. Standard/Flat Screw Driver. The blade tip is wedge-shaped and resembles a
negative (-) sign. This is used to drive screws with a single slot head.
2. Philips Screw Driver. This has a cross tip resembling a positive (+) sign. This is
used to drive screws with cross slot heads.
3.Stubby Screw Driver. It comes in either Standard or Philips screw driver with short
shank or blade and a shorted handle used to turn screws in tight space where
standard screw driver cannot be used.
4. Allen Screw Driver/Wrench. This could be in the shape of a screw driver or a
wrench. Its function is to drive screw with hexagonal slot head.
HAMMERS. These are tools used in driving or pounding and pulling out nails. They
are made of hard steel, wood, plastic or rubber.
A. Claw hammer-
While these hammers all feature a round head for driving nails, the claw end is every
bit as useful for prying, splitting wood, tearing drywall and other small demolition
tasks. The claw is curved on a claw hammer, and straight on framing hammers.
These hammers are best for:
Woodworking
Prying
Finishing
Framing
Splitting
Small demolition
Ball Peen Hammer
The ball peen hammer was originally designed for peening, or shaping metal
materials by hammering. One end of the head is ball-shaped for this purpose. The
other end is flat and is used for driving.
Ball peen hammers are best for:
Metalworking
Rounding edges
Punching and riveting
Dead Blow Hammer
These hammers are designed to strike surfaces with great force, and dead blow
means they won’t rebound after striking.
Dead blow hammers are best for:
Automotive applications
Setting joints
Installing floor boards
Engineering and Drilling Hammers
The heavy head of a hand drilling hammer is used to drive chisels and punches.
These hammers typically feature a flat face with rounded edges and a wedged peen
opposite the head.
Engineering and drilling hammers are best for:
Driving
Punching and chiseling
Shaping and forging metal
Mallet
A mallet is a block on a handle, which is usually used for driving chisels. The head on
a rubber mallet is made of rubber. These types of hammers deliver softer impact than
hammers with metal heads. They are essential if your work needs to be free of
impact marks.
Mallets are best for:
Shaping metal
Fitting wooden parts
Plasterboard
Chipping and Riveting Hammers
Chipping hammers are great for breaking concrete. Welding and riveting hammers
can help remove slag from welds.
Chipping and riveting hammers are used in:
Mining
Manufacturing
Construction
Welding
Sledge Hammer
Sledge hammers are larger than most hammers and feature a metal, mallet-like
head. Heavier sledge hammers with longer handles are intended to be swung with
both hands.
Sledge hammers are best for:
Breaking stone
Driving stakes
Demolition
Soft-Face, Split-Head Hammers
Soft-face, split-head hammers with interchangeable heads are for use in projects that
require force without marking the surface. Soft- face, split head hammers come with
or without heads.
Soft-face, split-head hammers are best for:
Machining
Metalforming
Crafting
PLIERS. These made from metal with insulators in the handle and are used for
cutting, twisting, bending, holding, and gripping wires and cables.
1. Combination Pliers (Lineman’s Pliers). This is used for gripping, holding, and
cutting electrical wires and cables and even small nails. They are usually used by
linemen in doing heavy tasks.
2. Side Cutting Pliers. This type of pliers is used for cutting fine, medium and big
wires and cables.
3. Long Nose Pliers. This is used for cutting and holding fine wires. This can reach
tight space or small opening where other pliers cannot reach and also used in making
terminal loops of copper wires.
Wire Stripper- A tool used for removing insulation of medium sized wires ranging
from gauge #10 to gauge #16.
Electrician’s Knife. This is used by linemen to remove insulation of wire and cables
in low and high voltage transmission lines.
Hacksaw. This tool is used to cut metal conduit and armored cable.
Hand Pipe Bender. It is used to bend pipes from ¼” to 1” in size.
TORQUE WRENCH a tool used to apply precisely a specific torque to a fastener
such as a nut or bolt. It is usually in the form of a socket wrench with special internal
mechanisms.
Knockout punch, also known as a chassis punch, panel punch, Greenlee punch, or
a Q-max, is a hand tool used to punch a hole through sheet metal.
Wrenches
Wrenches are one of the most widely used hand tools. Their main purpose is
holding and turning nuts, bolts, cap screws, plugs and various threaded parts.
Open-End Wrenches that are widely used are made with openings at a 150 angle,
which permits complete rotation of hex nuts with a 300 swing by flopping the wrench.
Box wrenches are made in long and short patterns with double offset and 150 angle
offset. Twelve-point, hex and square openings are available in regular and heavy-
duty patterns.
Combination Box-Open End Wrench .The widely used patterns are made in long
and short types having a 150 angle open end and a 12-point box opening of the same
size opposite. The box opening is offset at a 150 angle to the handle for clearance.
Adjustable Wrenches are designed to provide a wide range of capacity in a single
tool and are a convenient service wrench for repairmen, linemen and others. They
can lessen nuts of different sizes. They are available in lengths from 4 to 24 inches.
A plumb bob or a plummet is a weight, usually with a pointed tip on the bottom, that is
suspended from a string and used as a vertical reference line, or plumb line.
Prick Punch. It is used for marking out some points in the material to be punched. It is also
known as Dot punch. It has a sharper angled tip to produce a narrower and deeper point.
A file is a metalworking, woodworking and plastic working tool used to cut fine amounts of
material from a workpiece.
Cold Chisel may be made from round, square, hexagon, or octagon steel stock. All cold
chisels have a cutting edge at one end from cutting, shaping and removing metal softer than
the cutting edge itself such as cast iron, wrought iron, steel, bronze, copper, etc. and a
struck face on the opposite side.
C-Frame Pipe Cutter. The “C” shaped frame cutter is made with a feed screw that causes
the moveable housing to slide forward making with the pipe. It is commonly used to cut
pipes.
Drop Head Rachet Threader. The Drop Head Rachet Threader is found in virtually every
tool box. It is used to thread pipes. It has a receptable cutting dies.
Hickey. This tool is used to bend offset bends on conduit. Offset bends are
sometimes hard to accomplished using a normal conduit bender so a hickey must be
used.
Reamer- used to cut away the rough edges inside the pipe after being cut.
Vise-grip wrench- used to locked on the objects and grip it.
Pipe Wrench - used for gripping pipes only.
Machinist’s vises are designed to withstand the strain in industrial work and similar
applications.
Pipe Vises are designed to hold round pipes.
Puller - used for pulling out gears, bearings or bushings.
COMMON POWER TOOLS
1. Portable Electric drill. A small drilling machine with a chuck
capacity of ¼‖ to 3/8‖. It is used in making holes on metal sheets
and concrete walls.
2.Electric drill has an electric motor that drives a chuck. The chuck
has jaws that can be opened and then closed to grip a drill kit.
3. Grinding tool (Grinder) can be either bench-mounted or
installed on a pedestal. They may either have a grinding wheel,
view wheel, or two grinding wheels
4. Jigsaw- A saw with fine teeth and a narrow blade which can cut
curves in wood or metal.
5. Power Hacksaw- A power tool with a blade that is put under
tension, for cutting metal
COMMON PNEUMATIC TOOLS
1.Vacuum cleaner is used for cleaning the floor and car interiors after
service.
2. Pneumatic Torque Wrench. This wrench uses compressed air to
quickly and powerfully turn nuts, bolts, and other objects.
3. Air chisel uses reciprocating motion to drive a cutting hammering tool.
An air hammer drives a chisel to cut off a nut that has frozen to a stud. It
can be used with a variety of tools-cutters and punches to do many jobs.
4. Air racket uses the sockets and attachments from a standard socket
set.
DRILLING Bits
Drilling involves using a drill bit to make a hole of accurate size. A power hand drill is
one of the various tools to power the bit.
Twist bits
Usually referred to as twist drills, twist bits are probably the most common drilling
tools used by the handyman with either a hand or electric drill. The front edges cut
the material and the spirals along the length remove the debris from the hole and
tend to keep the bit straight.

'high speed steel' (HSS), these are suitable for drilling most types of material, when
drilling metal the HSS stands up to the high temperatures.

'carbon steel', these bits are specially ground for drilling wood and should not be
used for drilling metals, they tend to be more brittle, less flexible than HSS bits.
Masonry bit
these are designed for drilling into brick, block, stone, quarry tiles or concrete.

Spur point bit- they have a central point and two raised spurs that help keep the bit
drilling straight. The bit cuts timber very fast when used in a power drill and leaves a
clean sided hole. They are ideal for drilling holes for dowels as the sides of the holes
are clean and parallel.

Tile Bit
A bit for drilling ceramic tiles and glass, it has a ground tungsten carbide tip. They can
be used with a hand drill, but are best used in a variable speed power drill on a slow
speed.
Flat wood bit
Intended for power drill use only, the centre point locates the bit and the flat steel on
either side cuts away the timber. These bits are used to drill fairly large holes and
they give a flat bottomed hole (with a central point) so are ideal where the head of a
screw/bolt needs to be recessed into the timber - always use this bit before drilling
the clearance hole for the bolt.
Hole saw
Used for cutting large, fixed, diameter holes in wood or plastic.
Forstner bit
Used to form hole with a flat bottom, such as for kitchens cupboard hinges.
Wood Auger bit
This is ideal when drilling large-diameter, deep holes in wood or thick man-made
boards.
Measuring Tools and Equipment
Measuring tools and instruments are sensitive and delicate so extra care is
necessary in handling them. These are used to measure lengths, currents, voltages,
resistances, wattages and other important elements in electrical works.

Types of Electrical Measuring Instruments:

Indicating instruments-devices that indicate direct the value of the quantity being
measured on the scale.
Integrating instruments-device that combines two or more electrical quantities and
registers it as a single equivalent unit.
Recording instruments-devices that give a record of the variations of the electrical
quantity being measured over a period of time.
Test Light is a pocket size tool used to test the line wire or circuit if there is current in
it.
Micrometer is used to measure the diameter of wire/conductors in circular mils,
threads of screws and other small measurements.
Wire Gauge is used in determining the size of conductors. The gauge ranges from 0
to 60 AWG (American Wire Gauge).
Ruler/Foot rule is a measuring tool used to measure length, width and thickness of
short flat object and sketching straight lines.
Pull-Push Rule is a measuring tool used to measure the length of an object in
centimeter and inches.
Ammeter is an instrument used to measure the amount of electrical current intensity
in a circuit. The unit of measure is ampere (A). It is connected along or series to the
circuit.
Voltmeter is an instrument used to measure the electrical or voltage of a circuit. The
unit of measure is volt (V). This is connected across or parallel to the circuit.
Clamp Ammeter is also called tong-tester. It is used to measure current flowing in a
condutor. It is clamped or hanged in a conductor.
Volt-Ohm-Milliammeter(VOM) otherwise called as the Multi-tester; is used to
measure the voltage, current and resistance of a circuit. It is connected in parallel or
series with the circuit depending on what to measure.
Kilowatt-Hour meter is used to measure electrical energy consumption of a certain
consumer. It is used by all electrical utility company. It can be analog or digital.

digital
analog
Instrument Name Quantity Being Measured
Calorimeter Heat Generated
Dynamometer Mechanical output of a Motor
Frequency meter Frequency
Galvanometer Small Voltage or Current
Hydrometer Specific gravity of the liquid in a battery
Inductometer Inductance
Megger Insulation Resistance
Ohmmeter Resistance
Oscilloscope Waveform Characteristics
Photometer Luminous intensity of light
Power factor meter Power factor
Pyrometer High Temperatures
Synchroscope Alternator’s Synchronization
Tachometer Speed of Shaft
Wattmeter Active Power
SWITCHES
DEFINITION
• a switch is any electrical component that cuts, interrupts or
divert the flow of current in an electrical circuit.
• In building wiring, a switch, also known as light switch, is
commonly used to connect lights, electrical equipment or
electrical outlet.
• Switches are normally wall mounted but some are built-in
with the equipment.
Types of Switches According To
Operation
• Hand Switches. These switches are operated by hand. They
are the most common type of switches and are usually
used in residential and commercial wiring.
• Limit Switches. This switches are operated by machine motion.
They are useful in automation and control applications.
• Process Switches. They are triggered by some changes in
physical process such as temperature, level, flow, illumination
and others. Like limit switches, they are used for automation
and control especially on industrial plants.
Types of Hand Switches
• Toggle Switch
This type of hand switch is operated by a lever angled in one or
two or more positions.
Common switches used in lighting are toggle switches.
Pushbutton Switch
• This type of hand switch is a two position device operated with
a button that is pressed and released.
• Most pushbutton switches have an internal spring mechanism
returning the button to its “out”, or “unpressed” position for
moment operation.
Selector Switch
• Selector switches are actuated with a rotary knob or lever of
some sort to select one of two or more positions.
• Like the toggle switch, selector switches can either rest in any
of their positions or contain spring-return mechanisms for
momentary operation.
Dimmer Switch
• A dimmer switch is similar to a selector switch yet it is mostly
used as switch for lamps.
• It is sometimes called as dimmer control.
• It contains a solid-state circuit to allow changing the
brightness by reducing the voltage applied to the lamp.
 Rocker Switch
• A rocker( also known as See-Saw Switch)
switch is an on/off switch that rocks (rather
than trips) when pressed, which means one
side of the switch is raised while the other side
is depressed much like a rocking horse rocks
back and forth. A rocker switch may have a
circle (for "on") on one end and a horizontal
dash or line (for "off") on the other to let the
user known if the device is on or off.
Slider Switch

A slider switch is an on/off switch that slides rather than trips.

It is commonly
used in electronics rather than building wiring.
 1. It contains a solid-state circuit
to allow changing the brightness
by reducing the voltage applied
to the lamp.
a. Toggle Switch
b. Push button Switch
c. Selector Switch
d. Dimmer Switch
2. This type of hand switch is
operated by a lever angled in
one or two or more positions.
a. Toggle Switch
b. Push button Switch
c. Rocker Switch
d. Slider Switch
3. Equivalent to two SPST switches
controlled by a single mechanism.
a. Single Pole Double Throw Switch
b. Single Pole Single Throw Switch
c. Double Pole Single Throw
d. Double Pole Double Throw
4. This the most common type of
switch used. It is a single pole
single throw switch. It controls
one or more light in one location.
a. One way Switch
b. 3 way switch
c. 4 way Switch
d. 5 way Switch
5. If a bulb is to be controlled in four
locations, what switches will you need?
a. 1-one way switch and 2- three way switch
b. 2-three way switch and 2 – four way switch
c. 2 – three way switch and 1- four
way switch
d. 4-one way switch.
OUTLETS
DEFINITIONS
• As per Article 1.1 of the Philippine Electrical Code, an Outlet is a
point on the wiring system at which current is taken to supply
utilization equipment.
• A Receptacle is defined as a contact device installed at the
outlet or the connection of an attachment plug.
Types of Receptacles According to
Usage
• Base on the two types of outlets, receptacles basically come
into two types- lighting and power receptacles. Power outlets
are further devided to standard receptacles, GFCI receptacles,
Dryer Receptacles and Range Receptacles.
Light Receptacles (Lamp Holders)
• These are devices that hold and protect the lamp and are also
called as “Lamp Socket/ Receptacles”. These come in many
designs and sizes. They are classified as flush, hanging
(weather proof/chain) and surface types.
Power Receptacles
• Power receptacles are designed to carry heavy current. They
are as receptacle outlets for utilization equipments like small
appliances, ranges, air conditioners and dryers.
Standard Receptacle
• This is a type of power receptacle outlets used to as an outlet
for regular appliances like TV, radios and computers. These
receptacle outlets may accommodate two or three pin male
plug. They are commonly called as Convenience Outlet.
 GFCI Receptacles
• GFCI (Ground Fault Circuit Interrupter) Receptacle Outlets are
receptacles which standard used are in bathrooms and kitchens,
or any place where the area can get wet.
• They are recognizable because they have two narrow slots and a
semi-circular hole. These receptacle outlets have a built in
tripping element, so if water does get into it, the outlet will shut
down without shorting the rest of the house. GFCI receptacles
have a black button and red button.
• The black button is used to test the device while the red one is
used to reset it should it trip.
Dryer Receptacle
• Dryer Receptacles are receptacle outlets that are specially
designed for dryers. Dryers can operate in both 120 and 220
volt that is why these receptacles have either three or four
holes for the plug pins.
Range Receptacle
• Range Receptacle is sometimes called as Heavy Duty
Receptacle. This receptacle is designed to provide enough
electricity for electric range cookers or other heavy electrical
equipment, and should always be attached to its own circuit
breaker.
ACU Outlet
Air conditioning outlet (ACU) or Special Purpose Outlet (SPO) is
used when an electrical equipment has a grounded system
conductor. Commomly used in Aircon Units.
 Floor Outlet
• Floor outlets are electrical outlets that are installed into a floor
area rather than into a wall.
• Often, a floor outlet will be equipped with a metal plate to protect
the outlet and wiring, along with a cover that prevents dust and
other material from collecting in the outlet when the device is not
in use.
• Outlets of this type are usually found in dens and living rooms of
homes, as well as in conference rooms or other larger gathering
areas in offices and public buildings.
Weatherproof Outlet
• This receptacle outlet is installed outdoors. The receptacle has
a cover to cover it when not in used.
Wall Plate Covers
• They are receptacles and switches accessories used to cover
for wiring device system. They are also known as faceplates or
covers. A flat metal, plastic or wooden piece that covers the
openings in the wall made by receptacles and switches.
Wall Plate Box (Switch Box)
• This is used when a flush type switch or receptacle will be
installed as surface mounted. The box fits to the wall plate
cover.
ELECTRIC LAMPS
 Electric Lamps
• Electric lamps are devices that transform electrical energy into
visible radiant energy, or light.
• Some sources of electric wire are simply wires that are heated by
a flow of electric current until they become hot enough to be
luminous (incandescent lamp).
• In other sources, the process may be quite complex, involving
carefully controlled electrical discharges through gases or the
use of the unusual energy conversion properties of
semiconductors and phosphors (fluorescent and HID lamps).
Types of Lamps
• The Philippine Electrical Code (PEC) classifies lamps as
incandescent or electric discharge. Incandescent lamps have a
filament that glows white hot.
• Lamps that produce light without a filament are classified as
electric discharge lamps. Examples of electric discharge lamps
are fluorescent and HID lamps.
 Types of Lamps
Incandescent Lamp
An incandescent lamp has a filament made of tungsten.
When the tungsten becomes white hot, or incandescent, it
gives off light and heat.
Fluorescent Lamps
• Fluorescent lighting was first developed during the 1930s.
• Its principle is simple enough, but it took years of research before
it became the highly developed tube found in modern lighting
fixtures.
• The fluorescent lamp is an electronic device. It functions through
conduction in a gas.
• The lamp consists of a long straight or circular tube containing a
drop of mercury and a small amount of argon gas with electrodes
sealed into each end.
Types Fluorescent Lamp Starting
• Preheat or Switch Starting (with Starters or Manual Starting
Switches).
• If fluorescent-lamp cathodes are preheated before the lamp is
started, relatively inexpensive ballasts can be used.
• Such preheating is readily accomplished by means of manual
switches (used in desk lamps and portable lamps) or by
automatic starters (with which fixtures are controlled from a
wall switch).
Rapid Start Fluorescent Lamp
• The rapid-start type of fluorescent fixture does not need a
separate starting device.
• The ballast of a rapid start is called an electronic ballast.
• It has no starter and will not flicker.
 Compact Fluorescent Lamp
• A compact fluorescent lamp (CFL), also called compact
fluorescent light, energy-saving light, and compact fluorescent
tube, is a fluorescent lamp designed to replace an incandescent
lamp; some types fit into light fixtures formerly used for
incandescent lamps.
• The lamps use a tube which is curved or folded to fit into the
space of an incandescent bulb, and a compact electronic ballast in
the base of the lamp.
• The lamps are the preheat type, but the starter is located inside
the lamp base.
CFLs have two main components:
• a gas-filled tube (also called bulb or
burner)
• electronic ballast contain a small
circuit board with rectifiers, a filter
capacitor and usually two switching
transistors.
Lifespan Of CFL
• The rated life of a CFL ranges from 8 to 15 times that of
incandescent. CFLs typically have a rated lifespan of 6,000 to
15,000 hours, whereas incandescent lamps are usually
manufactured to have a lifespan of 750 hours or 1,000 hours.
HID lamps
A high-intensity discharge (HID) lamp is a type of electrical lamp
which produces light by means of an electric arc between
tungsten electrodes housed inside a translucent or transparent
fused quartz or fused alumina arc tube.
 TYPES OF HID LAMPS
Metal Halide lamps
Metal halide lighting systems are
growing in popularity and are becoming
the customer's choice for lighting
applications. This is because of the
unique combination of product features
offered by metal halide such as high
energy efficiency, white and high color
rendering light and long life.
High Pressure Sodium lamp
• High Pressure Sodium lamps (HPS) were invented in the 1960's
just as translucent high temperature ceramics became
available.
• It is a lamp that is much more energy efficient than mercury
vapour lamps, but the light's color - a yellow/orange - was
dramatically different from the common mercury blue.
Mercury Vapor lamps
• Mercury Vapour lamps were first developed in the 1930's in
both Europe and the United States.
• They represented a new type of lamp that was more efficient
and that lasted longer than incandescent lamps.
• They were ideal for street lighting and factory lighting.
Low Pressure Sodium lamps
• LPS lamps are more closely related to fluorescent than high
intensity discharge lamps, since they have a low–pressure,
low– intensity discharge source and a linear lamp shape.
 Luminaire
• Article 1.1 of PEC states that a luminaire is a complete
lighting unit consisting of a lamp or lamps together with the
parts designed to distribute the light, to position and protect
the lamps and ballast (where applicable), and to connect
the lamps to the power supply. They come in different sizes
and shapes.
• The luminaire includes the reflector, lamp sockets,
enclosing materials, ballasts in fluorescent and HID units,
and stems and canopies where used.
• Since the light from a bare lamp is given off approximately
equally in all directions, to use the light economically some
accessory is required to direct the light to the desired
areas.
 LED lamp
• An LED lamp is a light-emitting diode (LED) product which is
assembled into a lamp(or light bulb) for use in lighting fixtures.
• LED lamps have a lifespan and electrical efficiency which are
several times longer than incandescent lamps, and significantly
more efficient than most fluorescent lamps, with some chips able
to emit more than 300 lumens per watt (as claimed by Cree and
some other LED manufacturers).
QUESTIONS AND ANSWERS
The name of the tool common used for bending small size conduit is a _______.
a. Growler
b. Mandrel
c. Hickey
d. Henry
A tap tool is a tool used to _________.
a. Cut external threads
b. Remove broken bolts
c. Ream raceways
d. Cut internal threads
Insulating safety grips on tools __________.
a. Are enough
b. Are not meant for that purpose
c. Should be used with other insulating equipment
d. Are not enough
The reason for grounding the frame of a portable electric hand tool is to
___________.
a. Prevent the frame of the total tool from becoming alive to ground
b. Prevent overheating of the tool
c. Prevent shorts
d. Reduce the voltage drop
Your foreman asked you to measure the insulation resistance of some conductors. To
do this you would use a _______.
a. Hydrometer
b. Megger
c. Belt tester
d. Wattmeter
The instrument by which electric power is measured is a ________________.
a. Ammeter
b. Rectifier
c. Voltmeter
d. Wattmeter
The lubricant used to make pulling wires through a conduit easier is _________.
a. Grease
b. Powdered pumice
c. Vaseline
d. powdered soapstone
What type of fastener would you use to mount a box to a hollow tile wall?
a. Expansion bolts
b. Toggle bolts
c. Rawl plugs
d. Bolts with backing plates
A hook on the end of a fish tape is not to __________.
a. Keep it from catching on joints and bends
b. Tie a swab to
c. Tie the wires, to be pulled
d. Protect the end of the wire
A multimeter is a combination of ____________.
a. Ammeter, ohmmeter and wattmeter
b. Voltmeter, ohmmeter and ammeter
c. Voltmeter, ammeter and megger
d. Voltmeter, wattmeter and ammeter
A clamp-on ammeter will measure _____________.
a. Voltage when clamped on a single conductor
b. current when clamped on a multi-conductor cable
c. Accurately only when parallel to cable
d. Accurately only when clamped perpendicular to a conductor
Which of the following is the best type of saw to use to cut a 3” diameter hole through
½” plywood?
a. Circular Saw
b. Saber saw
c. Hack saw
d. Cross-cut saw
To sharpen an electrician’s knife, you would use a __________ stone.
a. Rubber
b. Carborundum
c. Rosin
d. Bakelite
A light bulb usually contains ___________.
a. Air
b. Neon
c. H2O
d. Either a vacuum or gas
The least desirable device for measuring an electrical cabinet containing live
equipment is a ____.
a. 6’ wooden ruler
b. Plastic ruler
c. Wood yardstick
d. 12’ steel pipe
A thermocouple will transform _________ into electricity.
a. Current
b. Heat
c. Work
d. Watts
The meter which measures resistance is known as __________
a. Ohmmeter
b. Multimeter
c. Voltmeter
d. Tachometer
The meter used for measuring potential difference of a circuit is
called ____________.
a. Voltmeter
b. Ammeter
c. Energy meter
d. Ohm meter
How is a voltmeter connected in a circuit?
a. Connect in short circuit across the load
b. Connect in shunt across the load
c. Connect in series across the load
d. Connect in open circuit with the load
A meter whose needle is initially at the center
a. Dynamometer
b. Iron vane meter
c. Galvanometer
d. Voltmeter
On a simple ohmmeter, the zero ohm mark is _____________ of the
scale.
a. In the right
b. Far left
c. None of these
d. Far right
A measuring instrument used to measure the diameter of circular
wires in mils.
a. Micrometer
b. Millimeter
c. Wire gauge
d. Milliammeter
A device used to remove the sharp burns or rough edges is called
________
a. Reamer
b. Threader
c. Hickey
d. Bender
A small tool with a tapered drill point used to make a pilot hole for
wood screw mounting.
a. Screw driver
b. Center punch
c. Puller
d. Gimlet
Which of the following device is NOT found on a DC board?
a. Synchroscope
b. Ammeter
c. Voltmeter
d. Rheostat
This tool is used by linemen to remove insulation of the large cables
a. Wire stripper
b. Lineman's pliers
c. Wire gauge
d. Electrician's knife
These hammers are designed to strike surfaces with great force, and dead blow
means they won’t rebound after striking.
a. Dead Blow
b. Mallet
c. Claw
d. Sledge
How can a short circuit be detected?
a. By using an ohmmeter
b. By using a megger
c. By using oscilloscope
d. By using an ammeter
A tool that is used to align conduits in multiple ducts is a
____________.
a. Hickey
b. Manometer
c. Growler
d. Mandrel
a contact device installed at the outlet or the connection of an attachment plug.
A. Electrical Lamps
B. Receptacle
C. Switch
D. Outlet
These are devices that hold and protect the lamp.
A. Lamp Sockets
B. Lamp Receptacles
C. Lamp Holder
D. All of these
any electrical component that cuts, interrupts or divert the flow of current in an
electrical circuit.
A. Electrical Lamps
B. Wires
C. Switch
D. Outlet
These switches are operated by hand.
A. Hand switches
B. Process Switches
C. Limit Switches
D. None of these
It is a device designed to open and close a circuit by nonautomatic means and to
open the circuit automatically on a predetermined overcurrent without damage to
itself when properly applied within its rating.
A. Fuse
B. Circuit Breaker
C. Outlet
D. None of these
These are tools or instruments activated by fluid pressure.
A. Hydraulic Tools
B. Pneumatic Tools
C. Hand Tools
D. All of these
The part of the fluorescent lamp
which controls the current flowing
to the tube.
a) Ballast
b) Starter
c) Lamp Holder
d) Cathodes
A rapid start fluorescent lamp has
no _________.
a) Ballast
b) Starter
c) Lamp Holder
d) Cathodes
According to PEC, the two types of
electrical lamps are _________.
a) Incandescent and LED
b) Incandescent and Discharge lamp
c) LED and CFL
d) All of the above
This type of Electrical Lamp has a
tungsten filament.
a) Fluorescent
b) LED
c) Incandescent
d) CFL
Based on PEC, what are the twp
types of receptacles?

a. Power and Light

b. Power and Lighting
c. Power and Heavy Duty
d. Power and Weatherproof
This is a type of power
receptacle outlets used to as an
outlet for regular appliances like
TV, radios and computers.
a. Convenience Outlet
b. Standard Receptacle
c. Range Outlet
d. Both a and b
These bits are specially ground for drilling wood and should not be used for drilling
metals, they tend to be more brittle
A. Carbon Steel Bits
B. High Speed Steel
C. Spur Point
D. Hole Saw
 GFCI outlets are placed in wet
areas around the house, what
does GFCI means?
a. Ground Fault Circuit Inverter
b. Ground Fault Circuit Interrupter
c. Ground Fault Current Interrupter
d. Grounded Fault Current Interrupter
Use to measure the heat generated.
A. Calorimeter
B. Hydrometer
C. Thermometer
D. Pyrometer
This is used to measure the speed of the shaft of a motor.
A. Speedometer
B. Tachometer
C. Hydrometer
D. Mandrel
It is used when an electrical
equipment has a grounded
system conductor.
a. ACU Outlet
b. SPO
c. CO
d. Both a and b
Engineering and drilling
hammers are best for except:
a. Driving
b. Punching and chiseling
c. Shaping and forging metal
d. Demolition