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Compressors, Gas Turbines and Jet Engines

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

Reheating
Adding a regenerator
Inter cooling
All of the listed here

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Compressors, Gas Turbines and Jet Engines
The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.

More than
None of these
Less than
Equal to

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

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

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Compressors, Gas Turbines and Jet Engines
The volumetric efficiency for reciprocating air compressors is about

10 to 40%
70 to 90%
40 to 60%
60 to 70%

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Compressors, Gas Turbines and Jet Engines
The work-done on a compressor will be minimum if air is taken from

A source of high temperature air
The atmosphere
A source at 0° C
A source of low temperature air

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

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

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