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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A rocket engine uses __________ for the combustion of its fuel.

Its own oxygen
None of these
Compressed atmospheric air
Surrounding air

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Compressors, Gas Turbines and Jet Engines
The air power of the compressor is also known as

None of these
Frictional power
Indicated power
Brake power

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Compressors, Gas Turbines and Jet Engines
Volumetric efficiency is

The ratio of the air actually delivered to the amount of piston displacement
The ratio of stroke volume to clearance volume
Index of compressor performance
Reciprocal of compression ratio

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Compressors, Gas Turbines and Jet Engines
Isothermal compression efficiency can be attained by running the compressor

At very high speed
At very slow speed
At average speed
At zero speed

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

Same
Less
More
May be less or more depending upon speed

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Compressors, Gas Turbines and Jet Engines
High air-fuel ratio is used in gas turbines

To increase the output
To save fuel
To increase the efficiency
To reduce the exit temperature

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