A hydraulic pump has a displacement of 100 in^3 per revolution and a volumetric efficiency of 90%. What is the actual output per revolution?

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Multiple Choice

A hydraulic pump has a displacement of 100 in^3 per revolution and a volumetric efficiency of 90%. What is the actual output per revolution?

Explanation:
Actual output comes from multiplying the pump’s displacement by its volumetric efficiency. The pump moves 100 cubic inches per revolution in theory, but only 90% actually gets to the output due to inefficiencies. So, 100 × 0.90 = 90 cubic inches per revolution. That’s why 90 in^3 per revolution is the correct value. The other numbers would require a different efficiency or displacement.

Actual output comes from multiplying the pump’s displacement by its volumetric efficiency. The pump moves 100 cubic inches per revolution in theory, but only 90% actually gets to the output due to inefficiencies. So, 100 × 0.90 = 90 cubic inches per revolution. That’s why 90 in^3 per revolution is the correct value. The other numbers would require a different efficiency or displacement.

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