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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The minimum work required for a three stage reciprocating air compressor is ___ the work required for each stage.

Double
Three times
Six times
Equal to

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Compressors, Gas Turbines and Jet Engines
Which of the following fuels can be used in turbojet engines?

Liquid hydrogen
High speed diesel oil
Kerosene
Methyl alcohol

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Compressors, Gas Turbines and Jet Engines
The efficiency of roots blower ________ with the increase in pressure ratio.

Does not change
Increases
Decreases
None of these

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Compressors, Gas Turbines and Jet Engines
A machine used to raise the pressure of air is called

Air motor
Gas turbine
I.C engine
Compressor

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Compressors, Gas Turbines and Jet Engines
Fighter bombers use following type of engine

Rocket
Turbo-propeller
Turbojet
Ramjet

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

Adding a regenerator
Reheating
Inter cooling
All of the listed here

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