Compressor terminology: identify the parameter that equals work per cycle divided by stroke volume. Definition focus: In reciprocating compressors, the ratio (workdone per cycle)/(stroke volume) is called what? Choose the correct term.

Given data / DefinitionQuantity of interest = (Workdone per cycle) ÷ (Stroke volume).

Concept/ApproachMean Effective Pressure (MEP) is defined so that if it acted uniformly on the piston through the stroke volume, it would produce the same work as the actual cycle.

Step-by-stepW_cycle = MEP × V_strokeMEP = W_cycle / V_stroke

Why others are wrongCompressor capacity is generally volumetric flow per unit time; compression ratio is p₂/p₁; compressor efficiency compares ideal vs actual work.

Final AnswerMean effective pressure.