Deck 26: Electric Circuits, Circuit Protection, Control Wiring and Electrical Safety

Question 1

Which of the following wire colors would indicate a neutral conductor?

A)green
B)yellow
C)white
D)black

Answer 1

C

Question 2

A circuit in which one side of the power source is referenced to ground is called __________.

A)incomplete
B)polarized
C)damaged
D)arced

Answer 2

B

Question 3

Automatic switches can start a load without any warning.

Answer 3

True

Question 4

Which of the following have voltage and amperage ratings that should always be checked?

A)manually operated switch
B)system operated switch
C)neither a nor b
D)both a and b

Question 5

A device that is capable of interrupting the flow of electricity in a circuit is a __________.

A)capacitor
B)terminal loop
C)wirenut
D)switch

Question 6

A current of 100 milliamperes is fatal if it persists for one second.

Question 7

________________ and circuit breakers are designed to automatically protect a circuit from damage because of excessive current flow.

A)Fuses
B)Currents
C)Transformers
D)Relays

Question 8

All manufacturers use the same electrical symbols in their schematics.

Question 9

Which of the following wire colors would indicate a hot conductor?

A)green
B)yellow
C)white
D)black

Question 10

Which of the following is the most widely used material for wiring?

A)tin
B)copper
C)gold
D)silver

Question 11

Switches can be installed in parallel with other switches or with a load.

Question 12

Electric circuits are usually drawn as connection diagrams or ____________, which also can be called ladder diagrams.

A)controls
B)logic circuits
C)schematics
D)outputs

Question 13

If someone is being shocked by an electrical circuit, you should immediately remove them from the electrical source.

Question 14

Which of the following changes its state based on the actions of an individual?

A)manually operated switch
B)automatically controlled switch
C)neither a nor b
D)both a and b

Question 15

Switches can be placed in series with a load or with other switches.

Question 16

In a circuit, a battery, circuit breaker, or generator would serve as a __________.

A)power source
B)load
C)output
D)current

Question 17

In a circuit, any device that uses power, such as a light bulb, an electric heater, or a motor, is called a __________.

A)power source
B)load
C)output
D)current

Question 18

Which of the following is NOT a factor that determines the current carrying capacity of a wire?

A)diameter
B)temperature
C)material
D)color

Question 19

Which of the following operates on various inputs such as time, pressure, liquid level, or temperature?

A)manually operated switch
B)automatically controlled switch
C)neither a nor b
D)both a and b

Question 20

A current of one milliampere can be felt.

Question 21

How many paths exist from the power source to the load in a series circuit?

Question 22

Electric circuits are usually broken down into which three sections?

Question 23

Name at least three locations that require GFCI protection.

Question 24

Name at least two things you can do when working with electrical devices to avoid electrical shock.

Question 25

A device that is used to raise or lower voltage on equipment is a _________.

A)capacitor
B)relay
C)transformer
D)switch

Question 26

What device operates by comparing the current in the energized hot line to the current in the neutral line and opening the circuit if these currents differ by more than a 4 to 6 milliamperes?

Question 27

Which wire number has the smallest diameter?

A)No. 10
B)No. 12
C)No. 14
D)No. 18

Question 28

What mathematical principal or law is expressed as V = I ´ R ?