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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
In a jet engine, the air-fuel ratio is

1.2506944444444
1.6673611111111
2.5006944444444
2.0840277777778

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Compressors, Gas Turbines and Jet Engines
An air compressor may be controlled by

Blow off control
Clearance control
Any one of the above
Throttle control

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

0.83402777777778
2.5006944444444
0.62569444444444
0.41736111111111

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Compressors, Gas Turbines and Jet Engines
Surging is the phenomenon of

Motion of air at sonic velocity
Air stream not able to follow the blade contour
Unsteady, periodic and reversed flow
Air stream blocking the passage

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Compressors, Gas Turbines and Jet Engines
The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation

0.1%
0.5%
5%
1.0%

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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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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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