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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

0.62569444444444
0.83402777777778
2.5006944444444
0.41736111111111

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Compressors, Gas Turbines and Jet Engines
The pressure and temperature conditions of air at the suction of compressor are

Pressure slightly less than atmospheric and temperature slightly more than atmospheric
Slightly less than atmospheric
Atmospheric
Slightly more than atmospheric

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Compressors, Gas Turbines and Jet Engines
Cylinder clearance in a compressor should be

About 50% of swept volume
As large as possible
As small as possible
About 100% of swept volume

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Compressors, Gas Turbines and Jet Engines
A gas turbine used in air craft should have

Small frontal area and high h.p.
High h.p. and low weight
High speed and high h.p.
Low weight and small frontal area

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Compressors, Gas Turbines and Jet Engines
The pressure ratio of an ideal vaned compressor with increase in mass flow rate

Remain constant
Increases
Decreases
First decreases and then increases

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Compressors, Gas Turbines and Jet Engines
During base load operation, the best method of controlling compressor is

Start-stop motor
Relief valve
Variable speed
Constant speed unloader

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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