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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Volumetric efficiency of a compressor decreases with ________ in compression ratio.

Remain same
Does not change
Decrease
Increase

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Compressors, Gas Turbines and Jet Engines
In a single stage, single acting reciprocating air compressor without clearance volume, the work-done is maximum during

None of these
Isothermal compression
Isentropic compression
Polytropic compression

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

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

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Compressors, Gas Turbines and Jet Engines
The maximum combustion pressure in gas turbine as compared to I.C. engine is

More
Same
Less
Depends on other factors

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Compressors, Gas Turbines and Jet Engines
The volume of air sucked by the compressor during its suction stroke is called

Swept volume
Free air delivery
None of these
Compressor capacity

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Compressors, Gas Turbines and Jet Engines
Only rocket engines can be propelled to space because

They can generate very high thrust
These engines can work on several fuels
They have high propulsion efficiency
They are not air breathing engines

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