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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The closed cycle in gas turbines

Provides greater flexibility
In never used
Provides lesser flexibility
Is used when gas is to be burnt

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

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

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Compressors, Gas Turbines and Jet Engines
Isothermal compression though most efficient, but is not practicable because

It requires very big cylinder
It is impossible in practice
It does not increase pressure much
Compressor has to run at very slow speed to achieve it

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Compressors, Gas Turbines and Jet Engines
For minimum work required to compress and deliver a quantity of air by multistage compression

All of the listed here
The work-done in each stage should be same
The intercooling should be perfect
The compression ratio in each stage should be same

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Compressors, Gas Turbines and Jet Engines
Efficiency of gas turbine is increased by

Inter cooling
Adding a regenerator
Reheating
All of the listed here

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Compressors, Gas Turbines and Jet Engines
The thermodynamic efficiency of rotary compressor is based on

Adiabatic compression
Isentropic compression
Polytropic compression
Isothermal compression

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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