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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of

Vacuum
Oxygen alone
Atmospheric air
Compressed air

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Compressors, Gas Turbines and Jet Engines
Turbofan engine employs

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

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Compressors, Gas Turbines and Jet Engines
For supplying intermittent small quantity of air at high pressure, following compressor is best suited

Centrifugal
Reciprocating
Axial
Screw

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Compressors, Gas Turbines and Jet Engines
A compressor at high altitudes will require ___ power.

Same
More
Less
None of the listed here

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

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

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

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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