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Compressors, Gas Turbines and Jet Engines

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

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

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Compressors, Gas Turbines and Jet Engines
The compressed air may be used

In starting and supercharging of I.C. engines
For operating pneumatic drills
In gas turbine plants
All of the listed here

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Compressors, Gas Turbines and Jet Engines
In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in ________ of the piston.

One stroke
Two strokes
Three strokes
Four strokes

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Compressors, Gas Turbines and Jet Engines
In a single stage, single acting reciprocating air compressor, without clearance volume, the work-done is minimum during

Isothermal compression
None of these
Isentropic compression
Polytropic compression

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Compressors, Gas Turbines and Jet Engines
Work ratio of a gas turbine may be improved by

Increasing the turbine work
Increasing the compression work
Decreasing the compression work
Both (A) and (C) above

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

Increases
None of these
Does not change
Decreases

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