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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The blades of gas turbine are made of

Carbon steel
High nickel alloy
Stainless steel
High alloy steel

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Compressors, Gas Turbines and Jet Engines
If the flow of air through the compressor is perpendicular to its axis, then it is a

Axial flow compressor
Centrifugal compressor
Turbo compressor
Reciprocating compressor

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Compressors, Gas Turbines and Jet Engines
During peak load periods, the best method of controlling compressors is

Relief valve
Constant speed unloader
Variable speed
Start-stop motor

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Compressors, Gas Turbines and Jet Engines
The compression ratio for the compressor is always _________ unity.

Less than
More than
Equal to
None of these

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Compressors, Gas Turbines and Jet Engines
The pressure ratio of an ideal vaned compressor with increase in mass flow rate

Increases
First decreases and then increases
Decreases
Remain constant

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Compressors, Gas Turbines and Jet Engines
Actual compression curve is

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

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