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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A closed gas turbine in which fuel is burnt directly in the air is not possible because of

High specific volume
Paucity of O2
High friction losses
Increasing gas temperature

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

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

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Compressors, Gas Turbines and Jet Engines
In multistage compressor, the isothermal compression is achieved by

Employing inter-cooler
By constantly cooling the cylinder
By running compressor at very slow speed
By insulating the cylinder

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Compressors, Gas Turbines and Jet Engines
The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called

Slip factor
Velocity coefficient
Velocity factor
None of these

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Compressors, Gas Turbines and Jet Engines
A centrifugal compressor works on the principle of

Conversion of pressure energy into kinetic energy
Centripetal action
Generating pressure directly
Conversion of kinetic energy into pressure energy

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Compressors, Gas Turbines and Jet Engines
Gas turbine as compared to internal combustion engine

All of the listed here
Can be driven at a very high speed
Produces uniform torque
Has more efficiency

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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