
Electricity Unit 13 review
Authored by Robert Hemmila
Professional Development
Professional Development
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an energy source for heat production in a warm-air furnace?
Gas
Oil
Electricity
All of the choices are correct
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following choices best describes a limit switch used to detect flame roll-out on a gas furnace?
Close on rise of pressure
Close on rise of temperature
Open on rise of temperature
Differential temperature switch
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Limit switches used in gas furnaces typically monitor the ______________________.
Temperature within the air cavity of the furnace
Temperature of the gasses in the flue pipe
Temperature of the return air to the furnace
Temperature of the blower motor
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the blower motor fails to start in a gas furnace, what device will prevent the internal temperature of the furnace from getting too high?
Fan switch
Limit switch
Flame roll-out switch
Vent pressure switch
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What device is used on most newer furnaces to prove that the combustion blower is operating properly?
Limit switch
Pressure switch
Roll-out switch
Vent safety switch
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The pressure switch on a typical gas furnace should close _____________________________.
After the combustion blower starts
Immediate when the thermostat calls for heat
After the furnace shuts down
Right after the burners ignite
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A standing pilot is often classified as a(n) ____________________________.
Intermittent ignition system
Direct ignition system
Continuous ignition system
Electronic ignition system
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