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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Volumetric efficiency of a compressor decreases with ________ in compression ratio.

Does not change
Increase
Decrease
Remain same

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

Pumps
Radial flow compressors
Axial flow compressors
All of these

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Compressors, Gas Turbines and Jet Engines
In gas turbines, high thermal efficiency is obtained in

Closed cycle & Open cycle
Closed/open depending on other considerations
Open cycle
Closed cycle

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Compressors, Gas Turbines and Jet Engines
The efficiency of jet engine is

Higher at high altitudes
Lower at low speed
Higher at high speed
Same at all altitudes

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Compressors, Gas Turbines and Jet Engines
Out of the following, from where you will prefer to take intake for air compressor

From a side where cooling tower is located nearby
From outside atmosphere at 1°C
From coal yard side
From an air conditioned room maintained at 20°C

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Compressors, Gas Turbines and Jet Engines
Pick up the wrong statement about advantages of multistage compression

Mechanical balance is better
More loss of air due to leakage past the cylinder
Air can be cooled perfectly in between
Better lubrication is possible advantages of multistage

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