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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

Polytropic reaction
Work coefficient
Pressure coefficient
Slip factor

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Compressors, Gas Turbines and Jet Engines
The performance of air compressor at high altitudes will be ________ as compared to that at sea level.

Higher
None of these
Lower
Same

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Compressors, Gas Turbines and Jet Engines
In a reciprocating air compressor, the compression work per kg of air

Decreases as clearance volume increases
Increases as clearance volume decreases
Increases as clearance volume increases
Is independent of clearance volume

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

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

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Compressors, Gas Turbines and Jet Engines
For slow speed large capacity compressor, following type of valve will be best suited

Any of the above
Disc or feather type
Poppet valve
Mechanical valve of the Corliss, sleeve, rotary or semi rotary type

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Compressors, Gas Turbines and Jet Engines
The ratio of the volume of free air delivery per stroke to the swept volume of the piston, is known as

Isothermal efficiency
Volumetric efficiency
Mechanical efficiency
Compressor efficiency

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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