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Compressors, Gas Turbines and Jet Engines

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

0.83402777777778
0.41736111111111
2.5006944444444
0.62569444444444

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Compressors, Gas Turbines and Jet Engines
Mining industry usually employs following motive power

Petrol engine
Diesel engine
C. electric motor
Compressed air

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Compressors, Gas Turbines and Jet Engines
The compressor capacity with decrease in suction temperature

May increase or decrease depending on compressor capacity
Increases
Remain unaffected
Decreases

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Compressors, Gas Turbines and Jet Engines
The work done per unit mass of air in compression will be least when 'n' is equal to

1.2
1
1.3
1.4

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Compressors, Gas Turbines and Jet Engines
The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.

Less than
More than
None of these
Equal to

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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.

One-half
Same
One sixth
One fourth

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