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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Reheating in gas turbine results in

Both (A) and (B) above
Increase of work ratio
Decrease of work ratio
Decrease of thermal efficiency

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Compressors, Gas Turbines and Jet Engines
The maximum temperature in a gas turbine is

700°C
200°C
500°C
1000°C

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

Parallel
Inclined
Perpendicular
None of these

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Compressors, Gas Turbines and Jet Engines
The thrust of a jet propulsion power unit can be increased by

Burning fuel after gas turbine
All of these
Injecting ammonia into the combustion chamber
Injecting water into the compressor

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Compressors, Gas Turbines and Jet Engines
Air-fuel ratio in a jet engine will be of the order of

0.41736111111111
0.62569444444444
2.5006944444444
0.83402777777778

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Compressors, Gas Turbines and Jet Engines
In which case the air-fuel ratio is likely to be maximum?

Multi cylinder engine
4-stroke petrol engine
4-stroke diesel engine
Gas turbine

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