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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The ratio of isentropic work to Euler work is known as

Work coefficient
Pressure coefficient
Polytropic reaction
Slip factor

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Compressors, Gas Turbines and Jet Engines
If infinite number of heaters be used in a gas turbine, then expansion process in turbine approaches

Adiabatic
Isochoric
Isothermal
Isentropic

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Compressors, Gas Turbines and Jet Engines
Compression efficiency is compared against

Ideal compression
Isentropic compression
Adiabatic compression
Isothermal compression

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Compressors, Gas Turbines and Jet Engines
Gas turbine as compared to steam turbine

Requires less space for installation
Has compressor and combustion chamber
All of these
Has less efficiency

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Compressors, Gas Turbines and Jet Engines
The ratio of the indicated power to the shaft power or brake power of the motor or engine required to drive the compressor, is called

Mechanical efficiency
Compressor efficiency
Isothermal efficiency
Volumetric efficiency

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Compressors, Gas Turbines and Jet Engines
The volumetric efficiency for reciprocating air compressors is about

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

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