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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The compression ratio in a gas turbine is of the order of

0.33402777777778
0.20902777777778
3.5 : 1
0.50069444444444

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Compressors, Gas Turbines and Jet Engines
Turbofan engine employs

No air stream
Solid fuel firing
One air stream
Two or more air streams

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Compressors, Gas Turbines and Jet Engines
Which is false statement about air receivers?

These knock out some oil and moisture
These act as reservoir to take care of sudden demands
These are used to dampen pulsations
These increase compressor efficiency

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Compressors, Gas Turbines and Jet Engines
The inlet pressure is always ___ the discharge pressure.

Equal to
Less than
More than
None of the listed here

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Compressors, Gas Turbines and Jet Engines
The thrust of a jet propulsion power unit can be increased by

Burning fuel after gas turbine
All of these
Injecting ammonia into the combustion chamber
Injecting water into the compressor

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Compressors, Gas Turbines and Jet Engines
In jet engines, paraffin is usually used as the fuel because of its

Low freezing point
Ease of atomisation
Both (A) and (C) above
High calorific value

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