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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The compression ratio in a gas turbine is of the order of

3.5 : 1
0.33402777777778
0.50069444444444
0.20902777777778

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Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, the flow of air is ________ to the axis of compressor.

None of these
Perpendicular
Parallel
Inclined

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Compressors, Gas Turbines and Jet Engines
During base load operation, the best method of controlling compressor is

Relief valve
Constant speed unloader
Variable speed
Start-stop motor

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Compressors, Gas Turbines and Jet Engines
Which is false statement about air receivers?

These increase compressor efficiency
These knock out some oil and moisture
These are used to dampen pulsations
These act as reservoir to take care of sudden demands

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Compressors, Gas Turbines and Jet Engines
Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is

Lower
Higher
Equal
Can't be compared

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Compressors, Gas Turbines and Jet Engines
In a four stage compressor, if the pressure at the first and third stage is 1 bar and 16 bar, then the delivery pressure at the fourth stage will be

256 bar
1 bar
16 bar
64 bar

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