Question 1

All insulations perform equally well in dry, damp, and wet locations.

Accepted Answer

A) True 
 B)False  False

Question 2

Materials that increase their resistance with an increase in temperature have a _____ coefficient of temperature.

Accepted Answer

A)  positive 
B)  negative 
A)  positive 
B)  negative A

Question 3

The ____________________ was standardized in 1857 and is used mainly in the United States for the diameters of round, solid, nonferrous electrical wire.

Accepted Answer

AWG,American Wire Gauge,American Wire Gauge (AWG)

Question 4

The National Electrical Code® _____ contains tables dealing with conductors for general wiring.

Accepted Answer

A)  300 
B)  310 
C)  100 
D)  110 
A)  300 
B)  310 
C)  100 
D)  110

Question 5

What is the nonconductive covering around a wire?

Accepted Answer

A)  insulation 
B)  conductor 
C)  duct bank 
D)  raceway 
A)  insulation 
B)  conductor 
C)  duct bank 
D)  raceway

Question 6

To test wire insulation, a special type of ohmmeter called a(n) _____ is used.

Accepted Answer

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

Question 7

A piece of wire that is one mil in diameter and one foot long is one mil-foot.

Accepted Answer

A) True 
 B)False

Question 8

The unit circular mil is equal to the _____.

Accepted Answer

A)  radius of the wire in mils 
B)  diameter of the wire in mils 
C)  radius of the wire in mils squared 
D)  diameter of the wire in mils squared 
A)  radius of the wire in mils 
B)  diameter of the wire in mils 
C)  radius of the wire in mils squared 
D)  diameter of the wire in mils squared

Question 9

The ambient air temperature considered in relation to a conductor ampacity is the temperature of the _____.

Accepted Answer

A)  conductor 
B)  insulation 
C)  raceway 
D)  surrounding air 
A)  conductor 
B)  insulation 
C)  raceway 
D)  surrounding air

Question 10

In the National Electrical Code® , the current carrying abilities of conductors are called the _____.

Accepted Answer

A)  ampacities 
B)  insulations 
C)  inductances 
D)  ambients 
A)  ampacities 
B)  insulations 
C)  inductances 
D)  ambients

Question 11

If there are more than _____ conductors in a raceway, the ampacity of the conductors must be derated.

Accepted Answer

A)  two 
B)  three 
C)  four 
D)  six 
A)  two 
B)  three 
C)  four 
D)  six

Question 12

When a conductor is very large it may become necessary to connect them in _____.

Accepted Answer

A)  parallel 
B)  series 
A)  parallel 
B)  series

Question 13

The ampacities listed in Table 310.15(B)(16)  are based on an ambient temperature of _____.

Accepted Answer

A)  194 ° F 
B)  30 ° F 
C)  140 ° F 
D)  86 ° F 
A)  194 ° F 
B)  30 ° F 
C)  140 ° F 
D)  86 ° F

Question 14

The insulation used on conductors cannot operate in all possible temperatures. The highest allowable temperature is called the _____ temperature.

Accepted Answer

A)  maximum operating 
B)  minimum operating 
C)  ambient 
D)  correction 
A)  maximum operating 
B)  minimum operating 
C)  ambient 
D)  correction

Question 15

In the American Engineers Handbook , the standard temperature of material resistance is _____.

Accepted Answer

A)  20°C 
B)  30°C 
C)  40°C 
D)  50°C 
A)  20°C 
B)  30°C 
C)  40°C 
D)  50°C

Question 16

A wire that has a diameter of 162 mils has an area of _____ circular mils.

Accepted Answer

A)  162 
B)  26,244 
C)  20,162 
D)  509 
A)  162 
B)  26,244 
C)  20,162 
D)  509

Question 17

The ampacities listed in the tables are based on a specified ambient temperature. If conductors are to be operated in a different ambient temperature than the temperature specified, a(n) ____________________ factor must be applied.

Accepted Answer

The answer of The ampacities listed in the tables are...

Question 18

There are two conductors, a red and a blue installed in metallic conduit. You are using a MEGGER to test for shorts. How should the two leads of the MEGGER should be connected?

Accepted Answer

A)  one to the blue lead and one to the conduit 
B)  one to the red lead and one to the conduit 
C)  one to the blue lead and one to the red lead 
D)  both to the conduit 
A)  one to the blue lead and one to the conduit 
B)  one to the red lead and one to the conduit 
C)  one to the blue lead and one to the red lead 
D)  both to the conduit

Question 19

The longer the conductor, the more _____ it will have.

Accepted Answer

A)  diameter 
B)  resistance 
C)  voltage 
A)  diameter 
B)  resistance 
C)  voltage

Question 20

There are two conductors, a red and a blue installed in metallic conduit. You are using a MEGGER to test for grounds. How should the two leads of the MEGGER should be connected?

Accepted Answer

A)  one to the blue lead and one to the conduit 
B)  one to the red lead and one to the conduit 
C)  one to the blue lead and one to the red lead 
D)  both a and b above 
A)  one to the blue lead and one to the conduit 
B)  one to the red lead and one to the conduit 
C)  one to the blue lead and one to the red lead 
D)  both a and b above

Exam 11: Using Wire Tables and Determining Conductor Sizes

All insulations perform equally well in dry, damp, and wet locations.

Materials that increase their resistance with an increase in temperature have a _____ coefficient of temperature.

The ____________________ was standardized in 1857 and is used mainly in the United States for the diameters of round, solid, nonferrous electrical wire.

The National Electrical Code® _____ contains tables dealing with conductors for general wiring.

What is the nonconductive covering around a wire?

To test wire insulation, a special type of ohmmeter called a(n) _____ is used.

A piece of wire that is one mil in diameter and one foot long is one mil-foot.

The unit circular mil is equal to the _____.

The ambient air temperature considered in relation to a conductor ampacity is the temperature of the _____.

In the National Electrical Code® , the current carrying abilities of conductors are called the _____.

If there are more than _____ conductors in a raceway, the ampacity of the conductors must be derated.

When a conductor is very large it may become necessary to connect them in _____.

The ampacities listed in Table 310.15(B)(16) are based on an ambient temperature of _____.

The insulation used on conductors cannot operate in all possible temperatures. The highest allowable temperature is called the _____ temperature.

In the American Engineers Handbook , the standard temperature of material resistance is _____.

A wire that has a diameter of 162 mils has an area of _____ circular mils.

The ampacities listed in the tables are based on a specified ambient temperature. If conductors are to be operated in a different ambient temperature than the temperature specified, a(n) ____________________ factor must be applied.

There are two conductors, a red and a blue installed in metallic conduit. You are using a MEGGER to test for shorts. How should the two leads of the MEGGER should be connected?

The longer the conductor, the more _____ it will have.

There are two conductors, a red and a blue installed in metallic conduit. You are using a MEGGER to test for grounds. How should the two leads of the MEGGER should be connected?

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The National Electrical Code^® _____ contains tables dealing with conductors for general wiring.

In the National Electrical Code^® , the current carrying abilities of conductors are called the _____.