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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The material commonly used for air craft gas turbine is

High alloy steel
Timken, Haste alloys
Duralumin
Stainless steel

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Compressors, Gas Turbines and Jet Engines
In a single stage, single acting reciprocating air compressor, without clearance, the work-done on the air during isentropic compression is ________ the heat required to raise the temperature of air from T₁ to T₂ at a constant pressure.

None of these
Greater than
Equal to
Less than

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Compressors, Gas Turbines and Jet Engines
A compressor at high altitude will draw

Less power
Same power
More power
More/less power depending on other factors

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Compressors, Gas Turbines and Jet Engines
Euler's equation can be used for

All of these
Radial flow compressors
Axial flow compressors
Pumps

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

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

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Compressors, Gas Turbines and Jet Engines
Reheating in a gas turbine

Decreases the thermal efficiency
Increases the compressor work
Increases the turbine work
Increases the thermal efficiency

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