What is the main difference between a heat pump and a fossil fuel furnace?
A) Heat pumps move heat instead of creating it. B) Fossil fuel furnaces have been around longer.
C) Fossil fuel furnaces are hotter. D) Heat pumps are easier to install.
[Ques. 2] Which type of control system can control system operation based on real-time system information?
A) Communicating system B) Relay logic system
C) Hybrid pneumatic electromechanical system D) Line-voltage control system
[Ques. 3] Why do direct spark ignition furnaces and hot-surface ignition furnaces require redundant gas valves?
A) To modulate the gas pressure B) In case one fails to open, the other will.
C) For safety since there is no pilot safety solenoid D) To open the valve slowly
[Ques. 4] Heat recovery ventilators are recommended over energy recovery ventilators in cold climates:
A) To avoid freezing the water they remove.
B) Because of the denser air.
C) Because colder climates are not affected by humidity differences.
D) Because there is so little heat in cold climates to exchange.
[Ques. 5] Ventilation systems can be grouped by their effect on building pressure as:
A) Natural draft or forced draft. B) Exhaust, supply, or balanced.
C) Contributing, offsetting, or correcting. D) Small, medium, or large.
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