Name: 
 

Chapter 20



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

By comparing the outlets that are included in the ____ to the actual outlets, an electrician is able to determine which outlets are working properly and which are not.
a.
indoor wall plan
c.
builders’ specifications
b.
electrical plan cabling diagram
d.
NEC® wiring requirements
 

 2. 

The white-colored grounded conductor must be attached to the ____ of the receptacle for there to be proper receptacle polarity.
a.
wirenut
c.
brass screw
b.
locknut
d.
silver screw
 

 3. 

If the lamps in a lighting fixture do not come on when the switches are activated, troubleshooting might include checking to see if the lighting outlet is being fed from a(n) ____ that has been sheetrocked over and never trimmed out.
a.
backup generator
c.
buried box
b.
sill plate
d.
outlet receptacle
 

 4. 

The likely cause of a circuit breaker tripping (or fuse blowing) as soon as the circuit is energized is a(n) ____.
a.
short-circuit condition
c.
open-circuit condition
b.
ground fault condition
d.
faulty starter
 

 5. 

The most common problem with three-way and four-way switches is ____.
a.
insufficient overcurrent protection
b.
damage to the circuit wiring
c.
improper grounding
d.
incorrect attachment of the traveler wires
 

 6. 

A(n) ____ condition results in a circuit that is energized but does not allow useful current to flow on the circuit because of a break in the current path.
a.
open-circuit
c.
ground fault
b.
short-circuit
d.
high-resistance
 



 
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