Name: 
 

Chapter 14



True/False
Indicate whether the sentence or statement is true or false.
 

 1. 

Electric, resistive-type heating is by far the most efficient of all types of heating.
 

 2. 

Electric duct heaters can only be used with heat pump systems.
 

 3. 

The wire used in electric heating elements has a low resistance to current flow.
 

 4. 

Electric furnaces are cheaper to operate than any other type of heating.
 

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

 5. 

Which type of wire is typically used to construct electric heating elements?
a.
copper
c.
nichrome
b.
aluminum
d.
any of the above
 

 6. 

Which device will automatically reset if a high temperature condition exists on an electric furnace?
a.
fusible link
c.
high-pressure control
b.
limit switch
d.
interlock
 

 7. 

If the thermostat is calling for heat, ____ volts should be read between R and W on the thermostat terminal strip.
a.
0
c.
115
b.
24
d.
220
 

 8. 

On a call for heat on an electric furnace, ____ volts should be read between W and G on the thermostat terminal strip.
a.
0
c.
115
b.
24
d.
220
 

 9. 

When troubleshooting an electric furnace, you find that the blower is operating, but cold air is coming out of the ducts, the thermostat is calling for heat, and the fan setting is on auto. What would be the most likely problem?
a.
defective fan relay
c.
open heating elements
b.
defective thermostat
d.
defective blower motor
 

Short Answer
 

 10. 

List two methods for proving airflow on an electric furnace.
 



 
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