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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The hottest point in a gas turbine is

in the center
between ~ to i of the blade height
at the base
at the tip

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Compressors, Gas Turbines and Jet Engines
Reheating in a multistage expansion gas turbine ________ compressor work.

Increases
None of these
Decreases
Has no effect on

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

None of these
Brake power
Frictional power
Indicated power

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Compressors, Gas Turbines and Jet Engines
The volumetric efficiency of compressor with increase in compression ratio will

Remain same
Decrease
Increase
May increase or decrease depending on clearance volume

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Compressors, Gas Turbines and Jet Engines
In the aircraft propellers

Propulsive matter is ejected from within the propelled body
All of these
Its functioning does not depend on presence of air
The propulsive matter is caused to flow around the propelled body

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Compressors, Gas Turbines and Jet Engines
Isothermal compression efficiency, even when running at high speed, can be approached by using

Fully insulating the cylinder
Cold water spray
Multistage compression
Both (A) and (B) above

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