How do technicians increase the blower speed in a belt-driven motor?
A) They loosen belt tension. B) They tighten belt tension.
C) They decrease pulley spread. D) They increase the pulley spread.
[Ques. 2] Typical condenser fan motor speeds are about:
A) 1,000 rpm or 1,600 rpm. B) 1,600 rpm or 3,400 rpm.
C) 500 rpm or 800 rpm. D) 800 rpm or 1,000 rpm.
[Ques. 3] The goals of most sustainable energy codes and standards are:
A) Improve energy efficiency, reduce waste, and reduce environmental impact.
B) Improve building efficiency, reduce waste, and reduce economic impact.
C) Improve construction efficiency, reduce cost, and reduce construction time.
D) Improve financial efficiency, reduce construction delay, and reduce economic impact.
[Ques. 4] A suction superheat measurement higher than the manufacturer's recommended superheat setting indicates that:
A) Too little refrigerant is being fed into the evaporator.
B) The system is operating correctly.
C) Too much refrigerant is being fed into the evaporator.
D) The system is operating even better than the manufacturer's design.
[Ques. 5] What is the purpose of the hot and cold decks on a multizone system?
A) They provide simultaneous hot and cold air.
B) The deck in use is called the hot deck.
C) The hot deck is energized and the cold deck is not.
D) They provide places to stand that are warm and cool.
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