All of the following statements about variable displacement compressors are true,EXCEPT:
A) Variable displacement compressor piston stroke is adjusted by an internal pressure valve.
B) Variable displacement compressors do not have a cycling clutch.
C) Variable displacement compressors have a cycling clutch..
D) Variable displacement compressors control evaporator pressure by varying their pumping capacity.

Question

Quizplus · Accepted Answer

Variable displacement compressors do have a clutch, but it is not a cycling clutch. The clutch is engaged constantly, and the compressor's displacement is adjusted by an internal pressure valve that regulates the amount of refrigerant flowing through the compressor. The compressor is able to vary its pumping capacity to control evaporator pressure and maintain a consistent temperature inside the refrigeration system.

All of the Following Statements About Variable Displacement Compressors Are