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Typical volumetric efficiency range for reciprocating air compressors What is the usual range of volumetric efficiency for practical reciprocating air compressors under normal conditions? Choose the correct option.

Difficulty: Easy

10% to 40%
40% to 60%
60% to 70%
70% to 90%

Correct Answer: 70% to 90%

Explanation:

Concept/ApproachVolumetric efficiency accounts for clearance, valve losses, heating during suction, and leakage. For well-designed reciprocating compressors, typical values lie in the 70–90% band.

Final Answer70% to 90%

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