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Compressors, Gas Turbines and Jet Engines

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

Liquid hydrogen
High speed diesel oil
Methyl alcohol
Kerosene

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Compressors, Gas Turbines and Jet Engines
The fuel consumption in gas turbines is accounted for by

Higher calorific value
Lower heating value
Higher heating value
Heating value

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Compressors, Gas Turbines and Jet Engines
Cylinder clearance in a compressor should be

As large as possible
About 50% of swept volume
As small as possible
About 100% of swept volume

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Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, an increase in speed at a given pressure ratio causes

Decrease in flow
Increase in flow and decrease in efficiency
Increase in efficiency
Increase in flow

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Compressors, Gas Turbines and Jet Engines
The most efficient method of compressing air is to compress it

Adiabatically
Isochronically
Isothermally
Isentropically

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Compressors, Gas Turbines and Jet Engines
In air breathing jet engine, the jet is formed by expanding

Solids
Plasma
Highly heated atmospheric air
Liquid

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