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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Actual compression curve is

Same as isothermal
In between isothermal and adiabatic
Better than isothermal and adiabatic
Same as adiabatic

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Compressors, Gas Turbines and Jet Engines
The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is

Less
More/less depending on compressor capacity
Same
More

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

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Compressors, Gas Turbines and Jet Engines
Pressure ratio in gas turbines is the ratio of

Highest pressure to exhaust pressure
Inlet pressure to exhaust pressure
Compressor pressure ratio
Pressures across the turbine

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Compressors, Gas Turbines and Jet Engines
Mechanical efficiency of gas turbines as compared to I.C engines is

Lower
None of these
Higher
Same

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Compressors, Gas Turbines and Jet Engines
Which is false statement about multistage compression?

It is best suited for compression ratios around 7:1
Volumetric efficiency is high
Power consumption per unit of air delivered is low
The moisture in air is condensed in the inter-cooler

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