In what circumstances would bare-pipe evaporators most likely be used?
A) Medium-temperature walk-in cooler evaporators
B) Air-conditioning coils
C) Heat pump indoor coils
D) Low-temperature refrigeration storage
D
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What type of compressor would you use if you needed to power aircraft?
A. Axial compressor B. Centrifugal compressor C. Rotary compressor D. Reciprocating compressor
An air-cooled R-12 refrigeration system is operating normally with a suction pressure of 25 psig and a head pressure of 136 psig. Which of the following represents a possible set of operating pressures if the condenser fan motor burns out?
A. high side 136 psig, low side 25 psig B. high side 100 psig, low side 15 psig C. high side 200 psig, low side 20 psig D. high side 180 psig, low side 35 psig
The high voltage cables _________
A) Are energized during events where the ignition switch is in the "on" position B) Are orange in color C) Both A and B D) Neither A nor B
Which item is a computer input sensor?
A) RPM B) Engine coolant temperature C) Throttle position angle D) All of the above