wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Electrical: NMSC, Ohm's Law & Services

Total questions: 61

Worksheet time: 44mins

Name
Class
Date
1.

What colour wire is known as the Hot wire?

a)

Blue

b)

Black

c)

White

d)

Green

2.

What colour screws do the Black wires attach to?

a)

Yellow

b)

Green

c)

Brass

d)

Silver

3.

How many wires (Maximum) can a Yellow Wire Nut hold using #14 AWG?

a)

1

b)

2

c)

4

d)

5

4.

The (a)   wire is used as a return back to the panel for electricity to complete its cycle.

5.

A switch is used for?

a)

Controlling the current flow

b)

Controlling the load

c)

controlling the voltage

d)

All of the above

e)

None of the above

6.

How many screws does a single pole switch have for wiring?

a)

1

b)

2

c)

3

d)

4

7.

WHAT IS THE MAIN FORMULA FOR OHMS LAW?

a)

R = IV

b)

E = I/R

c)

E = IR

d)

NONE

8.

WHAT IS RESPONSIBLE FOR THE CURRENT TO FLOW?

a)

PROTONS

b)

ELECTRONS

c)

NUCLEUS

d)

BOTH A & B

9.
What will be the current drawn by an electric bulb of 1000 W when it is connected to a source of 220 V?
Remember: I = P/V
a)
4.55 A
b)
28800 J or 28.8 KJ
c)
80 W
d)
200 W
10.

If an oven has a power of 2000 W and the voltage is 230 V which fuse should you use in the breaker box? A fuse should have some additional capacity so that the circuit does not "trip".

a)

2A

b)
5A
c)

10A

d)

20A

11.

What is the unit of Electrical Power?

a)

Joule

b)

Watt

c)

Where

d)

Amp

12.

The unit of energy is?

a)

Amp

b)

Joule

c)

kiloWatt

d)

Volt

13.

A kilowatt (kW) is how many watts?

a)

10

b)

50

c)

100

d)

1000

14.

Calculate the voltage applied when a 60 watt light-bulb uses a current of 5 amps

a)

300 volts

b)

30 volts

c)

12 volts

d)

0.08 volts

15.

What is the power in Watts of a 20V bulb with 5A of current flowing through it?

a)
100W
b)
100V
c)
6.3W
d)
6.3A
16.

What is the definition of a nonmetallic-sheathed cable?

4 lines
17.

List two uses permitted to use a nonmetallic-sheathed cable.

4 lines
18.

What are the two rules for running nonmetallic-sheet cable through board holes?

4 lines
19.

What can you use to support nonmetallic sheathed cable?

4 lines
20.

What is the maximum size power conductor (copper or aluminum) that you can use?

4 lines
21.

What is another name for nonmetallic-sheathed cable?

4 lines
22.

How much nonmetallic-sheathed should be coming out of the box?

a)

Three inches

b)

Twelve inches

c)

Six inches

d)

I don't care inches

23.

What was the name of the first manufacturer that invented nonmetallic-sheathed cable?

a)

Southwire

b)

Romex

c)

Cerro wire

d)

CTEC Wire

24.

What color is the jacket for the number 14 nonmetallic-sheathed cable?

a)
b)
c)
d)
25.

What color is the jacket for the number 12 nonmetallic-sheathed cable?

a)
b)
c)
d)
26.

What color is the jacket for the number 10 nonmetallic-sheathed cable?

a)
b)
c)
d)
27.

What is nonmetallic sheathed cable?

a)

a rigid electrical cable that uses a hard metallic covering to protect the inner wires

b)

a flexible electrical cable that features an outer plastic sheathing that protects the wires inside

c)

a low voltage data wire that connects computers to the internet

28.

How many wires are inside of an NM cable?

a)

only 2

b)

exactly 1

c)

5 or more

d)

at least 3, could be 4

29.

Where can NM cable be used? (Check all that apply)

a)

Inside wall cavities with a finished wall surface

b)

Buried underground

c)

Inside a dry air void of masonry or tile walls

d)

In an exposed, drop ceiling

e)

Embedded in poured concrete

30.

What is the maximum spacing between supports in a run of NM cable?

a)

30 feet

b)

12 inches

c)

54 inches

d)

10 feet

31.

What is nonmetallic sheathed cable?

a)

a rigid electrical cable that uses a hard metallic covering to protect the inner wires

b)

a flexible electrical cable that features an outer plastic sheathing that protects the wires inside

c)

a low voltage data wire that connects computers to the internet

32.

How many wires are inside of an NM cable?

a)

only 2

b)

exactly 1

c)

5 or more

d)

at least 3

33.

Identify:

a)

NON-METALLIC SHEATHED CABLE (NMC/NM)

b)

MINERAL INSULATED (MI)

c)

SHIELDED NON-METALLIC SHEATHED CABLE (SNM)

d)

FLAT CABLE ASSEMBLES (FC)

34.

Identify:

a)

UTILITY BOX

b)

JUNCTION BOX

c)

STRAIGHT PULL BOX

d)

ANGLE PULL BOX

e)

U PULL BOX

35.

Identify:

a)

COMPUTER DATA OUTLET

b)

LOCAL AREA NETWORK OUTLET

c)

WALL MOUNTED DATA OUTLET

d)

DATA TELEPHONE OUTLET

e)

THREE-WAY SWITCH

36.

It is a fabricated assembly of insulated conductors walled in flexible metal sheath.

a)

Non-metallic Sheathed Cable

b)

Braided Cable

c)

Power Cable

d)

Flexible Armored Cable

37.

It is used more often in residential wiring installations than in any other wiring method.

a)

Nonmetallic Sheathed Cable

b)

Flexible Armored Cable

c)

Metallic Sheathed Cable

d)

Coaxial Cable

38.

In cutting a flexible armored cable, the appropriate tools to be used is _________.

a)

Chainsaw

b)

Cutter pliers

c)

Hacksaw

d)

Electrician's knife

39.

It is used in normal residential circuits

a)

Type Nonmetallic cable for wet locations (NMC)

b)

Type NMS

c)

Type ACL

d)

Non-metallic cable for dry locations (NM)

40.

It is the required short circuit protection rating for a No. 12 AWG (3.5 mm2) non-metallic sheathed cable.

a)

15 amps

b)

20 amps

c)

30 amps

d)

25 amps

41.

It is the required short circuit protection rating for a No. 10 AWG (5.5 mm2) non-metallic sheathed cable with copper conductors.

a)

15 amps

b)

20 amps

c)

25 amps

d)

30 amps

42.

In color coding, the black wire is used for

a)

Hot wire, for switches or outlets

b)

Hot wire, for switch legs

c)

Hot wires, pulled in conduit

d)

Only for grounding

43.

A break in an electrical conductor or cable is called a(n) __________ circuit.

a)

Open

b)

Ground Fault

c)

Short

44.

An instrument used to measure values of resistance is called a(n) __________.

a)

Ohmmeter

b)

Voltmeter

c)

Ammeter

45.

A(n) __________ is designed to measure the amount of current flowing in a circuit

a)

Ammeter

b)

Voltmeter

c)

Ohmmeter

46.

Never work on energized electrical equipment unless it is absolutely necessary.

a)

True

b)

False

47.

A __________ tester is a device used to indicate whether there is a continuous path for current to flow in an electrical circuit or electrical device.

a)

Continuity Tester

b)

Ammeter

c)

Voltmeter

d)

Ohmmeter

e)

All of the above

48.

A voltmeter is used to measure __________

a)

Ohms

b)

Voltage

c)

Current

d)

Resistance

e)

None of the above

49.

The __________ is the system used to size the conductors used in residential wiring.

a)

American Wire Gauge (AWG)

b)

NEC® wire table

c)

international wire sizing chart

d)

All of the above.

50.

The __________ colored circuit conductor is used as the grounded conductor and returns current from the load back to the source.

a)

Black

b)

White

c)

Red

d)

Green

51.

The ungrounded "hot" conductor is terminated to the __________ colored terminal on a receptacle.

a)

Green

b)

Brass

c)

Silver

d)

None of the above

52.

A switch that is used on 240-volt circuits to control a load from one location is called a __________ switch.

a)

Double-Pole

b)

Single-Pole

c)

Combination

d)

Occuopancy

e)

3-Way Switch

53.

Which of the following switches has ON/OFF marked on the switch handle?

a)

Three-Way

b)

Double-Pole

c)

Four-Way

d)

None of the above

54.

A(n) _____ switch allows a fixture to be turned on and off from two difference locations.

a)

SINGLE POLE

b)

DOUBLE POLE

c)

DIMMER

d)

THREE-WAY

55.

The utility company’s service cables can be run _____________.

a)

Hot or Neutral

b)

Overhead or Underground

c)

Through EMT

d)

Through PVC

56.

A branch circuit that serves only a single appliance or receptacle is called a ____________ circuit.

a)

Dedicated

b)

Specific

c)

Limited

d)

Low-voltage

57.

Electrical outlets, technically called _______, provide power to plug-in devices and appliances.

a)

Receptacles

b)

Breakers

c)

Plugs

d)

Switches

58.

Standard outlets in a home are either _____________.

a)

15-amp or 20-amp

b)

Hot or Neutral

c)

Grounded or Ungrounded

d)

Open or Closed

59.

In potentially wet areas of a home, such as bathrooms, kitchens, and laundry rooms, some or all of the outlets must have _____ protection.

a)

GFCI

b)

Thermal

c)

Moisture

d)

Silicon

60.

#12 AWG is larger than ____________.

a)

#14 AWG

b)

#10 AWG

c)

#12 Romex

d)

#12 THHN

61.

______________ must be used for outdoor applications where the wiring must be protected from exposure.

a)

Conduit

b)

BX

c)

Silicon

d)

Romex

Similar Resources on Wayground

Vocabulary Unit 9 The post office

65 questions

Vocabulary Unit 9 The post office

quiz

Worksheet

•

11th Grade

MONEY AND BANKING

64 questions

MONEY AND BANKING

quiz

Worksheet

•

12th Grade

Semester Part 2

60 questions

Semester Part 2

quiz

Worksheet

•

11th Grade

Animal & Plant Science (Ag Certification Practice 2)

60 questions

Animal & Plant Science (Ag Certification Practice 2)

quiz

Worksheet

•

9th - 12th Grade

football logos

59 questions

football logos

quiz

Worksheet

•

KG - University

Everyday Cooking FINAL

60 questions

Everyday Cooking FINAL

quiz

Worksheet

•

9th - 12th Grade

Cat Internal Functions

62 questions

Cat Internal Functions

quiz

Worksheet

•

11th Grade - University

Woodworking Semester 2

60 questions

Woodworking Semester 2

quiz

Worksheet

•

9th Grade