TLE – BASIC

ELECTRICITY
1) A form of electricity where the flow
of current is always in the same
direction:
a. voltage
b. power
c. alternating current
d. direct current
ANSWER:
d. direct current
2 types of Electric Current
1. Alternating Current (AC) - It is an
electric current that is continually
varying in value and reversing its
direction of flow at regular interval.
2. Direct Current (DC) - It is an electric
current that flows in one direction.
VOLTAGE - It is the electrical pressure that
existed between two points and capable of
producing a flow of current when a close circuit
is connected between the points.
POWER – Ability to do work.
2) The force which opposes and
reduces the flow of electrical current
is recognized as ________.
a. power
b. resistance
c. electromagnetism
d. frequency

ANSWER:
b. Resistance Resistan
ce

Curre
voltag nt
e
POWER – ability to do work.

RESISTANCE – opposes or resists or

reduces the flow of electrical current.

ELECTROMAGNETISM - the production of

magnetic field by current in a conductor.

FREQUENCY – rate of the flow/cycle of

electrical current per second (hertz).
3) A part of an electric circuit which
converts electrical energy into another
form of energy to do work is ________.
a. load
b. circuit
c. source
d. control
ANSWER:
a. load

Example of load:
Any electronic appliances, Bulb or
incandescent lamp.
CIRCUIT – compose of SOURCE, PATH,
CONTROL & LOAD.
SOURCE – it is where the power comes
from. (Ex. GENERATOR – AC
source, BATTERY - DC source)
CONTROL – Ex. Switch and remote
control.

4) A part of an electrical circuit, consists of
batteries, generator or a main electrical
power which supplies electricity is called
________.
a. control
b. load
c. source
d. voltage

ANSWER:
c. source

Parts of Electric Circuit

1. Source - provides electric power to the circuit.
2. Load - an electrical device usually an appliances,
lights or any equipment.
3. Control / Switch - an electrical device that turns
ON and OFF conveniently. 
4. Path - a conductor composed of two or more lines
that provide passage for electric current
from the source to load.
5) A law that states that current is directly
proportional to voltage and inversely
proportional to resistance is known as ________.
a. PEC
b. Law of Resistivity
c. Kirchoff's Law
d. Ohm's Law

ANSWER:
d. Ohm's Law

Ohm’s Law - Law that states the relation

between the Voltage, Current and
Resistance.
PEC – Philippine Electrical Code.
Law of Resistivity – only for resistance.
Kirchoff's Law – either KVL or KCL.

6) In Ohm's Law, to find the unknown
voltage in the circuit, the formula to be
used is:
a. E = I x R
b. E = I / R
c. I = E / R
d. R = E / I

ANSWER:
I – Current in
a. E = I x Ampere or A
R V or E – Voltage
Recall Ohm’s law Formula: in Volts or V
I= V or I=E R – Resistance
R R in Ohm/s or Ω
2. V = IR or E=IxR
3. R = V or R=E
I I
7) What amount of current does a 40-watt
fluorescent lamp draw from a 220 volts power
source?
a. 5.5 amperes
b. 0.18 amperes
c. 25.5 amperes
d. 50.5 amperes

ANSWER:
b. 0.18 amperes
GIVEN:
P = 40W
V = 220V
I=?
SOLUTION:
I=P
V
I = 40W
220V
I = 0.18A
8) There are several factors involved in
electrical wiring installation but the
foremost consideration is ________.
a. cost
b. labor
c. safety
d function


ANSWER:
c. safety

The most important is your safety before

anything else!
9) The standard number or diameter of
wires for convenience outlet layout should
be?
a. 12
b. 14
c. 18
d. 10

ANSWER:
a. 12

According to PEC (Phil Electrical Code), the

standard number or diameter of wires for
convenience outlet (CO) layout should be
# 12 AWG.
# 14 – Lighting
10) To comply with the requirements of the
Philippine Electrical Code, the appropriate
fuse rating for lighting outlet should be
________.
a. 15 amperes
b. 30 amperes
c. 60 amperes
d. 20 amperes

ANSWER:
d. 20 amperes

20 amperes shall be permitted for lighting

units by the PEC.
30 amperes for fix lighting units with heavy duty lamp
holders
40 and 50 amperes for cooking appliances.
60 amperes for main breaker.
11) Planning and designing of electrical
wiring plan is being done in order to:
a. Provide efficient and effective wiring
system of the building.
b. Maintain quality workmanship.
c. Avoid overloaded circuit.
d. Protect the circuit from high current.

ANSWER:
a. Provide efficient and effective wiring
system of the building.
12) Circuit breakers are used to protect
household electrical circuits. What is the
ampacity rating of the breaker used for
convenience outlets or general purpose circuits?
a. 20 amperes
b. 30 amperes
c. 15 amperes
d. 60 amperes

ANSWER:
a. 20 amperes

20 amperes shall be permitted for lighting

units by the PEC.
30 amperes for fix lighting units with heavy duty lamp
holders
40 and 50 amperes for cooking appliances.
13) An electrical component used to control
electrical circuit in two different locations is
called:
a. four-way switch
b. three-way switch
c. push-button switch
d. remote controlled switch

ANSWER:
b. three-way switch

Three-way switch – controls electrical

circuit in two different locations.
Four-way switch - controls electrical circuit
in three different locations.
14) To conserve energy, what kind of
lamp should be used in lighting
fixtures?
a. Incandescent lamp
b. Mercury lamp
c. Compact fluorescent lamp
d. Neon lamp

ANSWER:
c. Compact fluorescent lamp

Compact Fluorescent Lamp (CFL) –

Consumes LESS energy.
Mercury Lamp, Incandescent Lamp
and neon Lamp – Consumes more
energy.
15) The size of electrical wire recommended
for installing lighting fixtures is:
a. No. 12 AWG
b. No. 10 AWG
c. No. 18 AWG
d. No. 14 AWG

ANSWER
d. No. 14 AWG

No. 14 AWG – Lighting fixtures

No. 12 AWG – Convenience outlet
No. 8 AWG – Service entrance
16) What is the voltage required by an
automatic pressure cooker having a
resistance of 20 ohms when the current
flowing is 8 amperes?
a. 240 volts
b. 480 volts
c. 120 volts
d. 160 volts

ANSWER:
d. 160 volts
AGAIN, RECALL OHM’S LAW
FORMULA:

GIVEN:
R = 20 Ω
I=8A
V=?

SOLUTION:
V=I XR
V= 20 Ω X 8A
V = 160 V
17) In a 220-volt power line, three 50-watt
incandescent bulbs are connected in parallel.
How many more bulbs will light if one of the
bulbs is open?
a. One
b. Two
c. All
d. None

 ANSWER:
b. Two

In parallel connection, If one bulb get

busted, it has no effect to the other
remaining bulbs.
18) In a simple electrical connection, one of
the lines of the source is connected to
________. 
a. Terminal 1 of the load
b. Terminal 2 of the load
c. Terminal 1 of the switch
d. Terminal 1 & 2 of the switch

ANSWER:
a. Terminal 1 of the load
Terminal 2

Terminal 1
19) Which of the following electrical
symbols in wiring diagram means that there
are three wires running in a line?
a. ----/-/-/----
b. -----/-/-/-/----
c. ------------
d. S3W

 ANSWER:
a. ----/-/-/----
1

2
3

----/-/-/---- - This symbol represents 3 wires

are running in one line.
20) A series connected dry cells will
result to ________.
a. increase in the amount of current
b. increase in the amount of voltage
c. increase total resistance
d. more powerful supply of electricity

ANSWER:
b. increase in the amount of voltage

Series connection of a dry cell:

- increase in the amount of voltage.
Parallel connection of a dry cell:
- Voltage is constant (does not increase or
decrease).
21) What type of switch is used to control
alternately three-phase line system using
two sources of power?
a. Double Pole Single Throw Switch
b. Single Pole Double Throw Switch
c. Triple Pole Single Throw Switch
d. Triple Pole Double Throw Switch
ANSWER:
d. Triple Pole Double Throw Switch

Triple Pole Double Throw Switch

-It can control alternately three-phase
line system using two sources of power
22) Which of the following is the best
conductor of electricity?
a. Copper
b. Aluminum
c. Silver
d. Gold
ANSWER:
c. Silver

Silver – electron runs very fast.

23) What type of switch is used when
you want to control one lamp or group of
lamps in two different locations?
a. Two, 3-way switch
b. One, 4-way switch
c. Two, single switch
d. Duplex switch
ANSWER:
a. Two, 3-way switch

Two, 3-way switch

- It can control one lamp or group of lamps
in two different locations.
24) Cells are connected in parallel to
increase the ________ capacity of the cells.
a. current
b. voltage
c. resistance
d. inductance
ANSWER:
a. current

In parallel connection of dry cell, the

CURRENT will increase.
In series connection of dry cell, the CURRENT is
COSTANT.
25) The resistors are to be connected in four
possible types of circuit connections namely series,
parallel, series-parallel and parallel-series. Which
type of connection will give the least amount of
equivalent resistance?
a. Series
b. Parallel
c. Series-parallel
d. Parallel-series

ANSWER:
b. Parallel

Series – The amount of resistance will

INCREASE.
Parallel - The amount of resistance will
DECREASE.
Series-parallel – INCREASE & DECREASE.
Parallel-series – DECREASE & INCREASE.
26) Which is an exposed wiring method that uses
cleats, knobs, tubes and flexible tubing for the
protection and support of single insulated
conductor run in or on building and not concealed
by the building structure?
a. Open wiring on insulators
b. Armored cable wiring
c. Concealed knob and tube wiring
d. Metal clad cable wiring

ANSWER:
a. Open wiring on insulators

Armored cable wiring - This cable must run

from box to box without splices.
Concealed knob and tube wiring – Hidden.
Metal clad cable wiring - Made of steel.
27) What will happen if two 100-W, 230 V
incandescent lamps are connected in series
across a 230 V source?
a. Both lamps will consume more power.
b. Both lamps will get burnt.
c. Each lamp will give lesser output lights.
d. Each lamp will give more output lights.
ANSWER:
c. Each lamp will give lesser output
lights.
28) What is the reason why electrical appliances are
connected in parallel rather than in series?
a. Parallel connection consumes lesser power.
b. Parallel connection is simpler than series connection.
c. Each appliances consumes more power if connected
in series.
d. It makes the operation of each appliance independent
of each other.

ANSWER:
d. It makes the operation of each appliance
independent
of each other.
29) When replacing a busted fuse which of
the following is important?
a. same size and type
b. same type but different rating
c. same size but different rating
d. different size and type

ANSWER:
a. same size and type

same size and type is advisable to

prevent electrical trouble.
30) Which of the following is a source of
alternating current?
a. Dynamo
b. Battery
c. Dry cell
d. Alternator

ANSWER:
d. Alternator

Alternator – AC source
Dynamo, Battery, and Dry cell are sources of
DC
31) When there is a break in the circuit
and the current could not pass through,
the circuit is ________.
a. closed
b. shorted
c. grounded
d. open

ANSWER:
The current could
d. open not pass because
the circuit is open
or broken.
32) Which term usually refers to a device
that produces an electric current when
light falls upon them?
a. Solar cell
b. Dry cell
c. Solar lamp
d. Solar light
ANSWER:
a. Solar cell

Solar cell or solar panel absorbs light

& converts it into electrical energy.
Dry cell – it is a battery.
Solar lamp – a lamp powered or
energized by solar energy.
Solar light – light comes from the sun.
33) Which is synchronous alternating-current
machine that changes mechanical power into
electrical power?
a. Dynamo
b. Motor
c. Alternator
d. Lathe machine
ANSWER:
c. Alternator

Alternator – sourced of Alternating Current

(AC).
Dynamo – one of the sources of DC.
Motor – an equipment powered or energized by
either AC or DC.
Lathe machine – no such machine in relation
with electricity.
34) Which battery CANNOT be recharged
after its chemical energy has been
depleted?
a. Energizer
b. Eveready
c. Primary battery
d. Secondary battery

 ANSWER:
c. Primary battery

Primary battery is a type of disposable

battery.
Energizer and Eveready – type of primary
battery
Secondary battery – can be RECHARGE.
35) Which generator generates direct
current?
a. Alternator
b. Dynamo
c. Battery
d. Adaptor

ANSWER:
b. Dynamo
36) Which battery can be recharged after
each chemical energy has been depleted?
a. Primary battery
b. Energizer
c. Eveready
d. Secondary battery

ANSWER:
d. Secondary battery

Secondary battery is a type of battery

that can be recharge.
37) Which is used to change mechanical
energy into electrical energy?
a. Battery
b. Circuit
c. Dry cell
d. Generator

ANSWER:
d. Generator

Generator is a type of AC source that

converts mechanical energy into
electrical energy.
38) A process in splitting the atom of
uranium is called ________.
a. fusion
b. fission
c. friction
d. tension

ANSWER:
b. fission

Fission means to break or split.

39) A process by joining hydrogen atoms which
causes heat hotter than the sun is called
________.
a. fusion
b. fission
c. friction
d. tension

ANSWER:
a. fusion

Fusion – means combine or join together.

40) Which transforms heat energy to electric
energy?
a. Transformers
b. Battery
c. Generator
d. Thermocouple
ANSWER:
d. Thermocouple

Thermo or thermal means HEAT.

41) Which is the kinetic energy of falling
water?
a. Thermo energy
b. Hydro energy
c. Solar energy
d. Mechanical energy

ANSWER:
b. Hydro energy

Hydro energy- Energy comes from

falling water or water falls.

Ex. Maria Christina falls.

42) Which is a solar collector that is
capable of producing voltage when
exposed to radiant energy (sunlight)?
a. Photoelectric
b. Photovoltaic system
c. Photoemission system
d. Solar light
ANSWER:
b. Photovoltaic system

Photo means light.

Voltaic means voltage.
43) Energy derived or extracted from the
internal heat of the earth is called ________.
a. volcanic
b. geothermal
c. thermal
d. chemical

ANSWER:
b. geothermal

Geo – means Earth

Thermal – means Heat
44) Which refers to the extraction of
electrons from a substance by sunlight
on incident electromagnetic radiation?
a. Photoelectric effect
b. Photovoltaic effect
c. Photoemission
d. Electron microscopy

ANSWER:
a. Photoelectric effect

Photo – means light

Electric – means electron
45) Which statement is TRUE?
a. Bigger size of wire has higher
resistance.
b. Bigger size of wire has lower
resistance.
c. Long wire has lesser resistance.
d. Short wire has higher resistance.

ANSWER:
b. Bigger size of wire has lower
resistance.
46) A small light bulb with a resistance of 100
ohms is connected across a 120-v line. What
is the current through the bulb?
a. 1.2 A
b. 0.012 A
c. 0.12 A
d. 12 A

ANSWER:
c. 0.12 A
Recall Ohm’s Law I = 120 V
Given: 100Ω
R = 100 Ω I = 1.2 A
V = 120 V
I=?
SOLUTION:
I=V
R
47) A 200-v lamp has a resistance of 400 ohms.
The power rating in watts of lamp is ________.
a. 100 w
b. 600 w
c. 200 w
d. 250 w

ANSWER:
a. 100 w
AGAIN, RECALL OHM’S LAW
GIVEN:
R = 400Ω
V = 200V
P=?
SOLUTION:
P=V P = 40,
000V2 2
R 400
2
Ω
P = (200V) P = 100
W
400 Ω
48) If 18 resistors, each of a value of 36
ohms, are connected in parallel, then the
total resistance is ________.
a. 36 ohms
b. 2 ohms
c. 648 ohms
d. 54 ohms
ANSWER:
c. 648 ohms

RESISTOR SERIES CONNECTION:

JUDST ADD ALL RESISTANCE TO GET THE
TOTAL RESISTANCE.
Rt = R1 + R2 + R3……
49) A toaster takes 10 A from a
120v line. The power used is:
a. 12 w
b. 130 w
c. 1,200 w
d. 120 w

ANSWER:
c. 1,200 w
RECALL OHM’S LAW
GIVEN:
I = 10A
V = 120V
P=?
SOLUTION:
P = VI
P = (120V)(10A)
P = 1, 200W
50) What is the resistance of a 100 w,
110-v incandescent lamp?
a. 121 ohms
b. 115 ohms
c. 125 ohms
d. 12.1 ohms

ANSWER:
a. 121 ohms
AGAIN AND AGAIN, RECALL OHM’S
LAW!!!
GIVEN:
P = 100W
V = 110V
R=?
SOLUTION:
R=V 2
P 2
R = (11OV)
100W 2
R = 12, 100V
100W
R = 121Ω
51) How many kilowatts is the water heater if it
draws a current of 10 amperes and has a resistance
of 23 ohms?
a. 23 Kw
b. 2,300 Kw
c. 230 Kw
d. 2.3 Kw
ANSWER:
d. 2.3 Kw
GIVEN:
I = 10A
R = 23Ω
P=?
SOLUTION:
2
P= I
R 2
P = (10A) (23Ω)
P = 2, 300W
CONVERT W TO KILOWATT OR
KW
2, 300W X 1KW
1000W
P = 2.3KW
52) The resistance of an electrical wire
is inversely proportional to its ________.
a. length
b. cross sectional area
c. temperature
d. material

ANSWER:
b. cross sectional area

CROSS SECTIONAL AREA MEANS SIZE OF

WIRE.

THE LARGER THE WIRE, THE LOWER THE

RESISTANCE.
53) A fluorescent lamp unit connected to
an 110v AC line takes 1.2A and requires
110w power. What is its power factor?
a. 0.9
b. 0.833
c. 0.866
d. 0.8

ANSWER:
b. 0.833
GIVEN:
V= 110V
I = 1.2A
P = 110W
SOLUTION:
P = VI
P = (110V)(1.2A)
P = 132W
TO GET POWER FACTOR:
P =P P = 110 W P = 0.833
f 2 f 132 W f
P
1
54) An electric heater uses 20kw-in 8 hours.
If the voltage across the heater is 240 volts.
What is the heater resistance?
a. 2.5 ohms
b. 83.3 ohms
c. 23.04 ohms
d. 2.30 ohms

ANSWER:
c. 23.04 ohms
GIVEN:
P = 20 KW
V = 240 V
NUMBER OF HOURS OF OPERATION = 8
HRS
R=?
SOLUTION:
GET POWER RATING PER HOUR:
P = 20, 000 WATTS
8 HOURS
2 500 W
P = 2,
HR
2
R=V 2
P
R = (240V)
R = 57, 600 V
2,500 W
55) The resistance of a 230v incandescent
lamp is 300 ohms. What current is
required to operate the lamp?
a. 0.85 A
b. 0.77 A
c. 1.30 A
d. 7.74 A
ANSWER:
b. 0.77 A
GIVEN:
V = 230 V
R = 300 Ω
I=?
SOLUTION:
I=V
R
I = 230 V
300 Ω
I = 0.77 A
56) A group of lamps operates a current of 12 A
and a voltage of 120v. What is the total power
of the lamps?
a. 1.44 kw
b. 1.20 kw
c. 1.34 kw
d. 14.4 kw

ANSWER:
a. 1.44 kw
GIVEN:
CONVERT WATT
I = 12 A
INTO KILOWATT:
V = 120 V
1, 440 W X 1 KW
P=?
SOLUTION:
1,
P = VI
OOOW
P = (120 V)(12
P = 1. 44 KW
A)
P = 1, 440 W
57) What is the maximum load capacity of
a 15A circuit breaker protecting a branch
circuit that supplies a continuous load?
a. 15 A
b. 10 A
c. 12 A
d. 14 A

ANSWER:
c. 12 A

ACCORDING TO PEC THE REQUIRED

MAXIMUM LOAD FOR 20A CIRCUIT
BREAKER IS 12 A.
58) What is the horsepower rating of an
electric water pump if it has a power rating
of 1.75 Kw?
a. 2 Hp
b. 2.3 Hp
c. 2.5 Hp
d. 23 Hp

ANSWER:
b. 2.3 Hp

SOLUTION:
CONVERT KW INTO HP:
1.75KW X 1HP
0. 746KW
= 2.3 HP
59) How many kilowatts does a certain
appliance consume for 5 hours of use if it
has a power rating of 1.5 Hp?
a. 56 Kw
b. 7.5 Kw
c. 5.6 Kw
d. 75 Kw
ANSWER:
c. 5.6 Kw
GIVEN:
P = 1.5 HP
EXPECTED NUMBER OF
HOURS OF OPERATION = 5
HOURS

SOLUTION:
1.5 HP X 0.746 KW
1 HP
= 1. 119 HP

1.119 KP X 5 HOURS = 5.6 HP

60) A cell supplies a load current of 0.5A for a
period of 20 hours until its terminal voltage
falls to an unacceptable level. How long can
it be expected to supply a current of 100mA?
a. 50 hours
b. 100 hours
c. 60 hours
d. 70 hours

ANSWER:
b. 100 hours

Solution:
Convert 0.5A into mA
0.5A x 1000mA
1A
= 500mA
get the current factor:
= 500mA
100mA
= 5

Get the number of hours:

5 x 20 hours = 100 hours
61) A battery is rated 200Ah. If it is used to
supply a constant current of 8Ah. How long
can the battery last until it becomes unusable?
a. 20 hours
b. 25 hours
c. 15 hours
d. 2.5 hours

ANSWER:
b. 25 hours

SOLUTION:
200Ah = 25 Hours
8Ah
62) The resistance of 500 meters of a certain
wire is 125 ohms. What length of the same
wire will have a resistance of 60 ohms?
a. 24 meters
b. 225 meters
c. 240 meters
d. 235 meters
ANSWER:
c. 240 meters
Given;
R2 = 60 Ω
R1 =125 Ω
L1 = 500M
L2 = ?
Solution:
Get the resistance factor:
Rf = R2/R1
= 60Ω/125 Ω
= 0.48
L2 = L1 x Rf
= 500M x 0.48
= 240M
63) If three equal resistances are connected in
parallel, the equivalent resistance of the
circuit will be ________ the value of one resistor.
a. three time
b. half
c. one-third
d. the same
ANSWER: Or
c. one-third R total = R/3
Example: R total = (10Ω)(1/3)
1/R total = 1/R1 + 1/R2 +
1/R3…… = 3.33Ω
1/R total = 1/10Ω + 1/10Ω +
1/10 Ω
1/R total = 0.1Ω + 0.1Ω + 0.1Ω
1/R total = 0.3Ω
R total = 1/0.3Ω
64) Find the cost of using a 100W, 220V
lamp for 20 hours at P3.00 per kW-hr?
a. P6.00
b. P9.00
c. P10.00
d. P60.00
ANSWER:
a. P6.00

Solution:
P3/Kilowatt-hour X 0.100 Kilowatt
= 0.3 hour
= 0.3/hour X 20 hour
= P6.00
65) Which is a box with a blank cover is
inserted in one or more runs of raceway
to facilitate pulling of the conductors?
a. Blank box
b. Junction box
c. Terminal box
d. Pull box
ANSWER:
d. Pull box
66) Which is a box with a blank cover for joining
runs of conduits and providing space for
connection and branching of enclosed
conductors?
a. Blank box
b. Junction box
c. Terminal box
d. Pull box
ANSWER:
b. Junction box
67) The minimum size of wire used in
electrical wiring is the no.14 AWG. Under the
SI standard, what is the diameter of this
wire?
a. 1.2 mm
b. 1.6 mm
c. 1.5 mm
d. 2.0 mm
ANSWER:
b. 1.6 mm
68) A thin-walled steel raceway of circular
with a corrosion-resistant coating for
protection of wires or cable is ________.
a. rigid metal conduit
b. flexible metal pipe
c. metal moulding
d. electrical metallic tubing
ANSWER:
d. electrical metallic tubing
69) Armored cable is commercially known
as ________.
a. BX cable
b. flat cable
c. metallic cable
d. duplex cable

ANSWER:
a. BX cable
70) Which type of cable is fabricated assembly of
insulated conductors enclosed in a flexible metal
sheath?
a. Underground cable
b. Armored cable
c. Flat cable
d. Flexible cable

ANSWER:
b. Armored cable
71) Flat cable assembly shall be installed for
________.
I. concealed work only
II. exposed work only
a. I only
b. II only
c. I and II
d. cannot be determined

ANSWER:
b. II only
72) An assembly of two pieces of insulating material
provided with grooves for holding one or more
conductors at a definite spacing from the surface
wired over and from each other, and with holes for
fastening in position is called:
a. split knob
b. cleat
c. spool insulator
d. strain insulator

ANSWER:
b. cleat
73) Which is a wiring method that uses knobs,
tubes, and flexible non-metallic tubing for the
protection and support of single insulated
conductors concealed in hollow spaces of walls
and ceilings of buildings?
a. Knob and tube wiring
b. Open wiring on insulators
c. Concealed knob and tube wiring
d. Open wiring with knob and tubes

ANSWER:
c. Concealed knob and tube wiring
74) Which term refers to that switch or
outlet body that is embedded or hidden in
the wall?
a. Surface type
b. Flush type
c. Concealed type
d. Open type

ANSWER:
b. Flush type
Surface type – either outlet or switch
which is
EXPOSED/OPEN or
VISIBLE.
b. Flush type - either outlet or switch
which is
HIDDEN.
c. Concealed type – HIDDEN raceway.
75) The use of surface non-metallic raceway is
not permitted in all the following, EXCEPT:
a. dry locations
b. where subject to severe physical damage
c. where voltage is over 300 V
d. where concealed

 ANSWER:
a. dry locations

surface non-metallic raceway – only

permitted in dry locations.
76) When the entire switch or outlet body
is visible and extends beyond the wall
surface, the device is said to be ________.
a. Wall type
b. Surface type
c. Flush type
d. Open type

ANSWER:
b. Surface type
77) What device automatically breaks the
circuit the moment an overload or short
circuit occurs?
a. Breaker switch
b. Overload
c. Circuit breaker
d. Main switch

ANSWER:
c. Circuit breaker
78) Which term is used when two conductors
are embedded in one solid mass of rubber
insulation?
a. two in one
b. three in one
c. stranded
d. duplex
ANSWER:
d. duplex
79) What type of socket is used for outdoor
or wet location in wiring installation?
a. Waterproof socket
b. Special purpose socket
c. Weatherproof socket
d. Outdoor socket

ANSWER:
c. Weatherproof socket
80) What is the smallest size of wire
permitted by the Code to be used in wiring
installation?
a. 2.0 mm squared 
b. 3.5 mm squared 
c. 2.0 mm
d. 1.25 mm squared

ANSWER:
a. 2.0 mm squared 

or # 12 AWG
81) Which one of the following uses is
permitted by the Code to be used for
surface non-metallic raceway?
a. dry locations
b. where concealed
c. where subject to severe physical damage
d. where voltage is over 300 V

ANSWER:
a. dry locations
82) Service entrance using copper
conductors shall have sufficient capacity
and shall not be smaller than ________.
a. 5.5 mm squared 
b. 3.5 mm squared 
c. 14 mm squared 
d. 8.0 mm squared

ANSWER:
d. 8.0 mm squared

or # 8 AWG
83) If two identical lamps give normal light
when connected in parallel in a 230v line
are reconnected in series in the same line,
the bulb will ________.
a. give more light
b. not light
c. give less light
d. blows out
ANSWER:
c. give less light
84) When flexible metal conduit is installed
as a fixed raceway, it shall be secured
within ________ on each side of every outlet
box.
a. 250 mm
b. 300 mm
c. 100 mm
d. 150 mm

ANSWER:
b. 300 mm
85) A short circuit can be detected by
using ________.
a. an ohmmeter
b. a megger
c. an oscilloscope
d. an ammeter
ANSWER:
a. an ohmmeter

SHORT CIRCUIT & OPEN CIRCUIT CAN

BE DETECTED BY USING OHMMETER.
86) The electrical plans for residential
house include the following items, EXCEPT:
a. Substation plan
b. Location plan
c. Floor plan showing location of service
d. Layout of wiring plan for general lighting
and receptacles outlets

ANSWER:
a. Substation plan
87) If installed in raceways, conductors of
size ________ and larger shall be stranded.
a. 5.5 mm squared 
b. 8.0 mm squared 
c. 14 mm squared 
d. 3.5 mm squared

ANSWER:
b. 8.0 mm squared 
88) At least ________ of free conductor shall
be left at each outlet, junction and switch
point for splices or connection of fixture or
devices.
a. 250 mm
b. 175 mm
c. 150 mm
d. 300 mm

ANSWER:
c. 150 mm
89) A certain residential house has lighting
load of 1.1 kVA and an appliance load of 10A
at 220 volts, single phase, two wires, 60 Hz.
The branch circuit fuse protection for lighting
and appliance loads are ________ and ________,
respectively.
a. 20 A and 60 A
b. 20 A and 30 A
c. 15 A and 30 A
d. 15 A and 20 A

ANSWER:
d. 15 A and 20 A

15A – LIGHTING
20A – APPLIANCES
30 A – SPECIAL OUTLETS
90) Live vegetation or trees ________ used
for support of overhead conductors spans.
a. shall be
b. should be
c. shall not be
d. should not be

ANSWER:
c. shall not be
91) Light fixtures suspended from the
ceiling by chains should be wired so
that the wires ________.
a. will be grounded
b. will not touch the chains
c. will support the fixture
d. will not support the fixture

ANSWER:
d. will not support the fixture
92) In rigid metal conduit wiring, conduit
of 15-20 mm diameter shall be supported
at least every ________.
a. 2,500 mm
b. 3,500 mm
c. 1,800 mm
d. 3,800 mm

ANSWER:
d. 3,800 mm
93) Why do conductors need additional wiring
insulators?
a. Electrical wiring needs to be protected from
mechanical harm.
b. Wires are connected by joints therefore need
re-insulation.
c. Wires touches wood surface therefore need
protection.
d. Wires skin is weak.

ANSWER:
a. Electrical wiring needs to be protected
from
mechanical harm.
94) What is the total number of mechanical
degrees that an electrical pipe run maybe
bent between pull points?
a. 360 degrees
b. 180 degrees
c. 120 degrees
d. 270 degrees

ANSWER:
a. 360 degrees
95) Rigid non-metallic conduit shall be
supported within ________ of each box.
a. 600 mm
b. 800 mm
c. 900 mm
d. 760 mm

ANSWER:
c. 900 mm

Every 900mm distance should be

supported by electrical clamp.
96) Electrical metallic tubing smaller than
________ electrical trade size shall NOT be
used.
a. 12 mm
b. 10 mm
c. 15 mm
d. 20 mm

ANSWER:
c. 15 mm

below 15mm = not allowed by PEC

15 mm above = allowed by PEC
97) Type AC cable shall be secured by
approved staples, straps, hangers or similar
fittings at intervals NOT exceeding ________.
a. 1,250 mm
b. 1,300 mm
c. 1,500 mm
d. 1,000 mm

ANSWER:
b. 1,300 mm
98) In concealed knob and tube wiring, the
clearance to be maintained between conductors is
________.
a. 65 mm
b. 45 mm
c. 76 mm
d. 50 mm

ANSWER:
c. 76 mm
99) Three bulbs are connected in parallel
and controlled by a single switch. If one of
the 3 bulbs is busted, what will happen to
the remaining bulbs?
a. it will not lit
b. its brightness is reduced
c. its brightness increases
d. its brightness is maintained

ANSWER:
d. its brightness is maintained

Bulb in parallel connection = brightness is maintain

Bulb in series connection = brightness reduces
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