Discussion
One main difference between centrifugal and reciprocating compressors is:
Answer: C
The main difference between centrifugal and reciprocating compressors is the principle by which they increase the pressure of air. A reciprocating compressor traps a volume of air and reduces it by a piston, so it is a positive displacement machine, while a centrifugal compressor raises the velocity of air by an impeller and converts this kinetic energy into pressure in a diffuser. Both compress the same kinds of gas, both handle inlet air by drawing it in, and both need lubrication in some form.
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