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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The weight per horse power ratio for gas in Turbine as compared to I.C. engine and steam turbine is

Higher
Same
Lower
None of these

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Compressors, Gas Turbines and Jet Engines
The process, which causes the air to enter the impeller blades of a centrifugal compressor at ________ velocity (without effecting the mass of air to flow and velocity of flow) is known as prewhirl.

Zero
None of these
Reduced
Increased

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

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

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Compressors, Gas Turbines and Jet Engines
Gas turbines use following type of air compressor

Reciprocating type
Axial flow type
Lobe type
Centrifugal type

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Compressors, Gas Turbines and Jet Engines
Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm. The air pressure will be

1.00 kg/cm²
1.06 kg/cm²
1.03 kg/cm²
0.53 kg/cm²

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

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

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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