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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Standard air is the air at ___ and relative humidity of 36 percent.

1 bar and 20°C
1 bar and 40°C
0.1 bar and 20°C
0.1 bar and 40°C

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Compressors, Gas Turbines and Jet Engines
A compressor mostly used for supercharging of I.C. engines is

Reciprocating compressor
Axial flow compressor
Roots blower
Radial flow compressor

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Compressors, Gas Turbines and Jet Engines
The compressed air may be used

For operating pneumatic drills
All of the listed here
In starting and supercharging of I.C. engines
In gas turbine plants

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Compressors, Gas Turbines and Jet Engines
Work ratio of a gas turbine may be improved by

Increasing the compression work
Decreasing the compression work
Both (A) and (C) above
Increasing the turbine work

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Compressors, Gas Turbines and Jet Engines
High air-fuel ratio is used in gas turbines

To reduce the exit temperature
To increase the efficiency
To save fuel
To increase the output

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Compressors, Gas Turbines and Jet Engines
The type of rotary compressor used in gas turbines, is of

Axial flow type
Radial flow type
Centrifugal type
None of the listed here

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