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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Axial flow compressor resembles

Turbine
Centrifugal pump
Reciprocating pump
Sliding vane compressor

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

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

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Compressors, Gas Turbines and Jet Engines
Propulsive efficiency is defined as ratio of

Thrust power and fuel energy
Engine output and propulsive power
Thrust power and propulsive power
Propulsive power and fuel input

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Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at

Diffuser outlet radius
Impeller outlet radius
Diffuser inlet radius
Impeller inlet radius

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Compressors, Gas Turbines and Jet Engines
The ratio of the net work obtained from the gas turbine plant to the turbine work is known as

Pressure ratio
Work ratio
Compression ratio
None of these

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Compressors, Gas Turbines and Jet Engines
The degree of reaction of an axial flow turbine is the ratio of isentropic temperature drop in a blade row to the

Adiabatic temperature drop in the stage
Total adiabatic temperature drop
Total temperature drop in the stage
Total temperature drop

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