Compressors, Gas Turbines and Jet Engines
The indicated work per unit mass of air delivered is

Greatly affected by clearance volume
Inversely proportional to clearance volume
Directly proportional to clearance volume
Not affected by clearance volume

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Compressors, Gas Turbines and Jet Engines
The overall isothermal efficiency of the compressor is defined as the ratio of

Work required to compress the air isothermally to the actual work required to compress the air for the same pressure ratio
Isentropic power to the power required to drive the compressor
Volume of free air delivery per stroke to the swept volume of the piston
Isothermal power to the shaft power or B.P. of the motor or engine required to drive the compressor

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