If compression is achieved by trapping a refrigerant vapour in an enclosed space, and then reducing its volume, then it is called:

positive-displacement type compressor

If compression is achieved by trapping a refrigerant vapour in an encl

1.	If compression is achieved by trapping a refrigerant vapour in an enclosed space, and then reducing its volume, then it is called:
A.	roto-dynamic type compressor
B.	open type compressor
C.	radial-flow type compressor
D.	positive-displacement type compressor
Answer» E.

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If compression is achieved by trapping a refrigerant vapour in an enclosed space, and then reducing its volume, then it is called:

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