What types of compressors are commonly used for large chillers?
A) Centrifugal and screw B) Rotary and scroll
C) Rotary and reciprocating D) Diaphragm and bellows
A
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____ is the amount of energy required to raise the temperature of any substance 1°F.
A. Thermal state B. Specific heat C. Temperature D. Heat
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What duck has a shovel-shaped bill?
a. Black duck b. American widgeon c. Northern shoveler d. Gadwall
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A defective brake switch could prevent proper operation of the _________
A) ABS brakes B) Cruise control C) Shift interlock D) All of the above
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Which of the following control valves cannot provide for variable positions over a range of 0% to 100%?
A) Pneumatic-assisted valve B) Motor driven value C) Proportional valve D) Solenoid valve
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