Question 1

The temperature coefficient can be used to determine the resistance of a material at different temperatures.

Accepted Answer

A) True 
 B)False

Question 2

A device that measures insulation resistance in millions of ohms is called a(n) ____.

Accepted Answer

A)  ammeter 
B)  megger 
C)  voltmeter 
D)  wattmeter

Question 3

A megohmmeter can produce voltages that range from 250 V to ____ V.

Accepted Answer

A)  5,000 
B)  10,000 
C)  25,000 
D)  50,000

Question 4

In some cases, such as for long wire runs or for the windings of transformers and motors, the electrician must be able to determine the correct conductor size by computing the ____ of the conductor.

Accepted Answer

A)  wattage 
B)  maximum voltage drop 
C)  resistance 
D)  both b and c

Question 5

Which of the following conductors has the least resistance per mil foot at 20 degrees C?

Accepted Answer

A)  Aluminum 
B)  Copper 
C)  Gold 
D)  Silver

Question 6

A copper conductor will have ____________________ resistance than an aluminum conductor of the same size and length.

Accepted Answer

The answer of A copper conductor will have ____________________ resistance...

Question 7

A ____________________ is a piece of wire one foot long and one mil in diameter.

Accepted Answer

The answer of A ____________________ is a piece of wire...

Question 8

The largest solid conductor listed in the wire tables is #____ AWG.

Accepted Answer

A)  12 
B)  10 
C)  8 
D)  6

Question 9

Gauge sizes are determined by the number of ____________________ necessary to produce a given diameter or wire.

Accepted Answer

The answer of Gauge sizes are determined by the number...

Question 10

A wire's ability to carry current is known as its ____________________.

Accepted Answer

The answer of A wire's ability to carry current is...

Question 11

The maximum amount of voltage drop permitted in a circuit is ____% of the applied voltage.

Accepted Answer

A)  0 
B)  3 
C)  6 
D)  9

Question 12

When determing wire size, first remove the wire's ____________________.

Accepted Answer

The answer of When determing wire size, first remove the...

Question 13

The temperature of the surrounding air is called the ____________________ air temperature.

Accepted Answer

The answer of The temperature of the surrounding air is...

Question 14

The largest AWG size is ____________________, which has an area of 211,600 circular mills.

Accepted Answer

The answer of The largest AWG size is ____________________, which...

Question 15

In practical applications, it is sometimes desirable to use ____________________ conductors instead of extremely large conductors.

Accepted Answer

The answer of In practical applications, it is sometimes desirable...

Question 16

Article ____ of the National Electrical Code deals with conductors used for general wiring.

Accepted Answer

A)  210 
B)  250 
C)  310 
D)  410

Question 17

____________________ currents are currents that are induced into metals.

Accepted Answer

The answer of ____________________ currents are currents that are induced...

Question 18

A location that is covered and not likely to be saturated by water is a ____ location.

Accepted Answer

A)  damp 
B)  dry 
C)  wet

Question 19

To test wire insulation, a special type of ohmmeter called a ____________________ is used.

Accepted Answer

The answer of To test wire insulation, a special type...

Question 20

When a three-phase installation is to be run in conduit, the power conductors ____.

Accepted Answer

A)  must be run with each phase in its own conduit 
B)  must be run with one phase in each conduit 
C)  can be run in any manner

Exam 9: Using Wire Tables and Determining Conductor Sizes