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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The air is delivered ________ in one revolution in case of a three lobbed rotor.

Six times
Four times
Two times
Three times

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Compressors, Gas Turbines and Jet Engines
The mass of gas turbine per kW developed is about ________ as that of an I.C. engine.

Same
One fourth
One-half
One sixth

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Compressors, Gas Turbines and Jet Engines
Free air is the air at

Atmospheric conditions at any specific location
20°C and 1 kg/cm² and relative humidity of 36%
0°C and standard atmospheric conditions
15°C and 1 kg/cm²

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

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

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

Centrifugal compressor
Axial flow compressor
Reciprocating compressor
Turbo compressor

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Compressors, Gas Turbines and Jet Engines
Aeroplanes employ following type of compressor

Axial flow
None of these
Centrifugal
Radial flow

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