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NOCTI: Electrical Construction #3

Total questions: 96

Worksheet time: 58mins

Name
Class
Date
1.

What is the primary reason for locking out and tagging out circuits before working on them?

a)

To prevent accidental machine operation

b)

To improve the efficiency of the work

c)

To check the functionality of the circuit

d)

To increase the voltage in the circuit

2.

Which of the following is NOT a recommended safety practice when working with electrical installations?

a)

Using insulated tools

b)

Wearing rubber gloves and boots

c)

Working on live circuits

d)

Keeping the work area dry

3.

What is the purpose of using a conduit in electrical wiring?

a)

To enhance the aesthetic appearance of the installation

b)

To protect wires from mechanical damage

c)

To increase the current carrying capacity of the wire

d)

To reduce the cost of wiring

4.

When installing a new electrical outlet, what is the first step?

a)

Connect the wires to the outlet

b)

Turn off the power to the circuit

c)

Cut the wires to the appropriate length

d)

Test the outlet with a voltage tester

5.

Which tool is essential for troubleshooting a circuit that repeatedly blows fuses?

a)

Hammer

b)

Multimeter

c)

Screwdriver

d)

Pliers

6.

What does it mean if a circuit breaker keeps tripping?

a)

The circuit is perfectly fine

b)

There is likely an overload in the circuit

c)

The circuit breaker is of high quality

d)

The electrical panel is outdated

7.

According to the National Electrical Code (NEC), what is the minimum allowable wire size for most household circuits?

a)

18-gauge

b)

14-gauge

c)

12-gauge

d)

16-gauge

8.

What must be done when a wiring installation does not comply with local electrical codes?

a)

It must be left as is

b)

It must be reported to the authorities

c)

It must be corrected to meet the standards

d)

It must be inspected more frequently

9.

Why is it important to ensure all connections are tight during an installation?

a)

To prevent energy efficiency

b)

To reduce the risk of fire

c)

To increase the resistance in the circuit

d)

To make the installation look neat

10.

What is the best practice for ensuring that an electrical panel is safe to work on?

a)

Check that all breakers are in the "on" position

b)

Ensure the panel is free of dust and debris

c)

Verify that the main breaker is turned off

d)

Label all circuits accurately

11.

In a parallel circuit, if one bulb burns out, what happens to the other bulbs?

a)

All other bulbs will also burn out.

b)

All other bulbs will become brighter.

c)

All other bulbs will stay lit at the same brightness.

d)

All other bulbs will turn off but not burn out.

12.
What will happen if one light bulb is removed from this circuit?
a)
The other bulbs will go out.
b)
The other bulbs will stay on
c)
The other bulbs will get dimmer.
d)
The battery will become stronger.
13.

What is the unit of voltage?

a)

volts

b)

watts

c)

amps

d)

ohms

14.

What is the unit of resistance?

a)

ampere

b)

watt

c)

ohm

d)

volt

15.

What voltage is necessary to produce a current of 200 amperes through a resistance of 100 Ω?

a)
100 volts
b)
20000 volts
c)
1000 volts
d)
500 volts
16.

What resistance would produce a current of 120 amps from a 6-V battery?

a)
0.5 ohms
b)
1 ohm
c)
10 ohms
d)
0.05 ohms
17.

What tool is used to strip insulation from electrical wires?

a)

Hammer

b)

Pliers

c)

Screwdriver

d)

Wire strippers

18.

What is the purpose of leaving a service loop of extra wire at outlet or switch boxes?

a)

To connect additional devices

b)

To allow for future adjustments or repairs

c)

To reduce the amount of wire needed

d)

To make the wiring look neater

19.

Required by code in potentially wet locations. (stops the current) when short circuit occurs.

a)

Three way switch

b)

Double pole switch

c)

GFCI

d)

Single pole switch

20.
a)
Motor
b)
Mouse
c)
Ground
d)
Fuse
21.

Match the following

a)

1.

motor

b)

2.

transformer

c)

3.

junction box

d)

4.

ground connection

e)

5.

lighting panel

22.

What electrical symbol is this?

a)

smoke detector

b)

storm drain

c)

phone jack

d)

dishwasher

23.

What electrical symbol is this?

a)

smoke detector

b)

220V outlet

c)

110V outlet

d)

light switch

24.

What electrical symbol is this?

a)

phone

b)

fan

c)

light

d)

smoke detector

25.

Where would you need this type of outlet?

a)

laundry

b)

bathroom

c)

garage & outside

d)

all of the above

26.

This is a GFI Outlet:

a)

true

b)

false

27.

Match the following

a)

1.

Controls 1 path

b)

2.

Controls 2 paths, one at a time

c)

3.

Controls 2 paths at same time

d)

4.

Controls 4 paths, 2 at a time

e)

5.

Controls multiple paths, 1 at a time.

28.

Label the symbols

a)

Ground

b)

Switch

c)

Battery

d)

Fuse

e)

Relay

f)

Motor

1
2
3
4
5
6
1)
2)
3)
4)
5)
6)
29.

Identify the picture.

a)

Junction Box

b)

Weatherproof duplex receptacle outlet

c)

Ceiling Fixture

d)

Single Receptacle outlet

30.

Identify the picture.

a)

Drop cord Fixture

b)

Ceiling Fixture

c)

Single-pole switch

d)

Junction Box

31.

Identify the picture.

a)

Three-way switch

b)

Single-pole switch

c)

Double-pole switch

d)

Four-way switch

32.

Identify the picture.

a)

Triplex receptacle outlet

b)

Single receptacle outlet

c)

Ceiling fixture

d)

Duplex receptacle outlet

33.

Identify the picture.

a)

Three-way switch

b)

Double-pole switch

c)

Weatherproof switch

d)

Low-voltage switch

34.

Identify the picture.

a)

Junction box

b)

Fluorescent fixture

c)

Telephone

d)

240-volt receptacle outlet

35.

Identify the picture.

a)

GFCI receptacle outlet

b)

Weatherproof duplex receptacle outlet

c)

Triplex receptacle outlet

d)

Single receptacle outlet

36.

What is the name of this component?

a)

fuse

b)

cell

c)

wire

d)

bell

37.

What is the name of this component?

a)

fuse

b)

cell

c)

motor

d)

lamp

38.

The government organization whose purpose is to set and enforce worksite safety and health standards is:

a)

OSHA (Occupational Safety Health Administration)

b)

EEOC (Equal Employment Opportunity Commission)

c)

NLRB (National Labor Relations Board)

d)

OPM (Office of Personnel Management)

39.

In residential structures, GFCI is required in

a)

living rooms

b)

bedrooms

c)

dining rooms

d)

kitchens

40.

What article in the National Electrical Code covers motors, motor branch-circuit and feeder conductors and their protection?

a)

Article 430

b)

Article 440

c)

Article 450

d)

Article 500

41.

The transformer winding to which the line is connected is called the ________ winding.

a)

primary

b)

field

c)

voltage

d)

current

42.

The winding ratio of a ________ transformer has a rating of 3:1 winding ratio.

a)

neutral

b)

step-down

c)

step-up

d)

control

43.

What is the resistance total for a 560 ohm, 1 k ohm, and a 3.3 k ohm resistor in series?

a)

323.76 ohms

b)

1,327 ohms

c)

4,860 ohms

d)

13,860

44.

A _______ fire extinguisher should be used on an electrical fire.

a)

Class A

b)

Class B

c)

Class C

d)

Class D

45.

What safety practice is used to prevent equipment from being energized?

a)

pump

b)

lockout/tagout

c)

remove fuse

d)

off switch

46.

An ohmmeter is used to measure

a)

current

b)

voltage

c)

resistance

d)

power

47.

Which of the following is used to measure a current?

a)

ohmmeter

b)

ammeter

c)

wattmeter

d)

voltmeter

48.

In an AC circuit, if resistance remains the same and voltage is doubled, then current

a)

reduces by half

b)

remains the same

c)

is doubled

d)

increases fourfold

49.

If the voltage source supplies 260 volts and the resistance measures 5 ohms, the current is

a)

28 amps

b)

36 amps

c)

48 amps

d)

52 amps

50.

In the DC circuit below, if R5 burns open, the total current

a)

increases

b)

decreases

c)

remains the same

d)

goes to zero

51.

Every digital multimeter can measure three basic things - current, voltage, and

a)

capacitance

b)

sinusoidal

c)

resistance

d)

pulse

52.

Where is the resistor located on this diagram?

a)

A

b)

C

c)

D

d)

B

53.

The proper angle for setting up a ldder is to place the basea/an ____ of the working length of the ladder from the wall or other vertical surface.

a)

sixteenth

b)

eighth

c)

quarter

d)

third

54.

The MINIMUM amount of free wire that must be left in a workbox is

a)

2 inches

b)

4 inches

c)

6 inches

d)

8 inches

55.

Non-metallic sheathed cable must be supported ____ from every outlet or junction box.

a)

4 inches

b)

8 inches

c)

12 inches

d)

16 inches

56.
a)

Pliers

b)

wire strippers

c)

side cutters

d)

wire tester

57.
a)

Filing pole

b)

Wire puller

c)

Fish tape

d)

Wire Holder

58.
a)

Long pliers

b)

Needle nose

c)

Pliers

d)

Vise grib

59.
a)

Side cutters

b)

Angle cutters

c)

pliers

d)

Lineman pliers

60.
a)

Lineman pliers

b)

pliers

c)

needle nose pliers

d)

side cutters

61.
a)

screwdriver

b)

Philips screwdriver

c)

Allen wrench

d)

Flat head

62.

What is the primary advantage of using LED lighting over incandescent bulbs?

a)

LEDs have a shorter lifespan.

b)

LEDs generate more heat.

c)

LEDs are less energy-efficient.

d)

LEDs have a longer lifespan and are more energy-efficient.

63.

What is the function of a circuit breaker in an electrical system?

a)

To convert AC to DC.

b)

To decrease the resistance in the circuit.

c)

To interrupt the circuit in case of excessive current, preventing damage.

d)

To increase the voltage supply to the circuit.

64.

How does a diode function in an electrical circuit?

a)

By allowing current to flow in both directions equally

b)

By converting electrical energy into light

c)

By storing electrical energy for later use

d)

By allowing current to flow in only one direction

65.

What is the primary function of a fuse in an electrical circuit?

a)

To increase the current flow

b)

To decrease the resistance

c)

To interrupt the circuit in case of excessive current

d)

To convert AC to DC

66.

What safety precautions should be followed when working with electricity?

a)

Wearing sunglasses

b)

Swimming while working with electricity

c)

Using wet hands

d)

Follow safety precautions such as wearing PPE, grounding equipment, avoiding water, using insulated tools, and turning off power.

67.

Explain the concept of electrical power and how it is calculated.

a)

Electrical power is not related to voltage or current.

b)

Electrical power is measured in volts.

c)

Electrical power is calculated by multiplying the voltage (V) across the circuit by the current (I) flowing through it using the formula P = V * I.

d)

Electrical power is calculated by dividing the voltage by the current.

68.

What is the role of a transformer in electrical circuits?

a)

To convert electrical energy into heat

b)

To transfer electrical energy between circuits through electromagnetic induction and adjust voltage levels.

c)

To store electrical energy in batteries

d)

To generate electricity from mechanical energy

69.

What is the purpose of a ground wire in an electrical system?

a)

To prevent electrical current from flowing through the system

b)

To regulate the voltage in the system

c)

To increase the resistance in the circuit

d)

To provide a path for excess electrical current to flow into the ground

70.

What does AC stand for in electrical terms?

a)

Amplified Current

b)

Alternating Current

c)

Analog Converter

d)

Advanced Circuit

71.

In general, a beginning tradesperson with little or no experience in the field

a)

A class 5 technician

b)

An apprentice

c)

A laborer

d)

A journeyperson

72.

The NEC requires two grounding electrode rods to be placed in the ground a minimum of ____ apart

a)

2 feet

b)

3 feet

c)

4 feet

d)

6 feet

73.

What is the minimum distance between straps on service entrance conductors?

a)

12 inches

b)

30 inches

c)

4 1/2 feet

d)

6 feet

74.

What is the MINIMUM working space width required at the service panel?

a)

16 inches

b)

24 inches

c)

30 inches

d)

36 inches

75.

Service conductors should have a clearance of not less than ___ from doors and windows designed to open

a)

12 inches

b)

16 inches

c)

24 inches

d)

36 inches

76.

According the the NEC, a continuous load is one where the maximum current is expected to continue for ___ or more hours

a)

3 hours

b)

4 hours

c)

6 hours

d)

8 hours

77.

The MINIMUM clearance of ___ must be maintained between overhead service conductors and residential driveways

a)

10 feet

b)

12 feet

c)

14 feet

d)

16 feet

78.

The safety feature that completes an electric current and carries the current safely away

a)

direct current

b)

circuit breaker

c)

grounding

d)

alternating current

79.

Which choice best identifies the hazard?

a)

The cabinet is colored light blue.

b)

Nothing. It looks good to me.

c)

Unattended fire extinguisher

d)

Locked cabinet door

80.

When the insulation on an extension cord is damaged, you should:

a)

Use duct tape to repair it

b)

Do nothing

c)

Remove it from service immediately

d)

Touch the conductors to see it they are energized

81.

A “Lock-out/Tag-out” system is used to:

a)

Keep people from stealing your tools

b)

Prevent accidental contact with electric current

c)

Keep you from completing the work

d)

Another step to your work

82.

Define direct current (dc).

a)

Current that reverses direction periodically

b)

Current that flows in one direction only

c)

Current that varies in magnitude

d)

Current that flows in multiple directions

83.

What is the term used to describe the number of cycles per second in an alternating current?

a)

Amplitude

b)

Frequency

c)

Wavelength

d)

Velocity

84.

Who publishes the NEC?

a)
National Fire Protection Association (NFPA)
b)
American Red Cross
c)
American Heart Association
d)
Occupational Safety and Health Administration (OSHA)
85.

How many chapters in the NEC?

a)
15
b)
20
c)
10
d)

9

86.

Match the Chapter/Article to in topic

a)

NEC Article 100

1.

Common definitions

b)

Chapter 2

2.

Wiring & Protection

c)

NEC Article 200

3.

Use & ID of grounded conductors

d)

Chapter 3

4.

Wiring Methods & Materials

e)

NEC Article 300

5.

General requirements wiring methods

87.

What article in the National Electrical Code covers motors, motor branch-circuit, and feeder conductors and their protection?

a)

Article 421

b)

Article 930

c)

Article 430

d)

Article 429

88.

What article in the National Electrical Code covers Wiring and Protection?

a)

Chapter 2

b)

Chapter 3

c)

Chapter 4

d)

Chapter 5

89.

What article in the National Electrical Code covers Wiring Methods and Materials?

a)

Chapter 2

b)

Chapter 3

c)

Chapter 4

d)

Chapter 5

90.

How often is the NEC updated?

a)

Every year

b)

Every two years

c)

Every three years

d)

Every five years

91.

Mandatory and permissive rules are defined in

a)

NEC article 90

b)

NEC article 100

c)

NEC article 110

d)

NEC article 200

92.

How far should outlet receptacles be from a hot tub or spa?

a)

Less than 3 feet

b)

Between 3 and 6 feet

c)

Between 6 and 9 feet

d)

More than 9 feet

93.

Is underground wiring allowed under a pool or spa?

a)

Yes

b)

No

94.

The term approved means to be

a)

a. listed by a Nationally Recognized Testing Laboratory (NRTL)

b)

b. acceptable to the National Electrical Code

c)

c. acceptable to the architect or engineer designing the job

d)

d. acceptable to the authority having jurisdiction

95.

The black-colored common terminal on a three-way switch should always have a __________ insulated wire connected to it.

a)

white

b)

black

c)

red

d)

any colored insulated wire is permitted

96.

Which type of outlet is required by code for kitchen countertops?

a)

Standard outlet

b)

GFCI outlet

c)

AFCI outlet

d)

USB outlet

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