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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The effective power of gas turbines is increased by adding the following in compressor

Hydrogen
Nitrogen
Ammonia and water vapour
Carbon dioxide

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Compressors, Gas Turbines and Jet Engines
Pick up the wrong statement about advantages of multistage compression

More loss of air due to leakage past the cylinder
Air can be cooled perfectly in between
Better lubrication is possible advantages of multistage
Mechanical balance is better

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Compressors, Gas Turbines and Jet Engines
The air-fuel ratio in gas turbines is of the order of

50: 1.
15: 1
30: 1
7: 1

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Compressors, Gas Turbines and Jet Engines
A rotary compressor is driven by an

Either (A) or (B)
Electric motor
None of these
Engine

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Compressors, Gas Turbines and Jet Engines
The combustion efficiency of a gas turbine using perfect combustion chamber is of the order of

0.99
0.9
0.75
0.85

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Compressors, Gas Turbines and Jet Engines
The capacity of a compressor is 5 m/min refers to

Free air
Standard air
Compressed air at delivery pressure
Compressed air

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