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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Reheating in a gas turbine

Increases the turbine work
Increases the compressor work
Decreases the thermal efficiency
Increases the thermal efficiency

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Compressors, Gas Turbines and Jet Engines
The maximum propulsion efficiency of a turbojet is attained at around following speed

1700 km/hr
2400 km/hr
1050 km/hr
550 km/hr

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

Does not change
Decrease
Remain same
Increase

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Compressors, Gas Turbines and Jet Engines
With the decrease in compression ratio, the volumetric efficiency

Does not change
Increases
Decreases
First decrease and then increase

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Compressors, Gas Turbines and Jet Engines
Ramjet engine

Is not self operating at zero flight speed
Produces a jet consisting of plasma
Requires no air for its operation
Is self operating at zero flight speed

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Compressors, Gas Turbines and Jet Engines
In turbo fan engine, the jet velocity as compared to turbojet engine is

Less
Same
More
May be less or more depending upon speed

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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