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Compressors, Gas Turbines and Jet Engines

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

Isothermal compression
None of these
Isentropic compression
Polytropic compression

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Compressors, Gas Turbines and Jet Engines
The compressor performance at higher altitude compared to sea level will be

Lower
Dependent on other factors
Same
Higher

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Compressors, Gas Turbines and Jet Engines
The gas in cooling chamber of a closed cycle gas turbine is cooled at

None of the listed here
Constant volume
Constant temperature
Constant pressure

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Compressors, Gas Turbines and Jet Engines
The maximum temperature in a gas turbine is

1000°C
700°C
500°C
200°C

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Compressors, Gas Turbines and Jet Engines
The air is delivered ________ in one revolution in case of a three lobbed rotor.

Two times
Three times
Six times
Four times

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Compressors, Gas Turbines and Jet Engines
A turboprop is preferred to turbojet because

It can fly at high elevations
It has high power for take off
It has high propulsive efficiency at high speeds
It can fly at supersonic speeds

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