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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
For supplying intermittent small quantity of air at high pressure, following compressor is best suited

Centrifugal
Axial
Screw
Reciprocating

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Compressors, Gas Turbines and Jet Engines
Pick up wrong statement. Surging phenomenon in centrifugal compressor depends on

Pressure ratio
Stagnation pressure at the outlet
Change in load
Mass flow rate

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Compressors, Gas Turbines and Jet Engines
The ratio of the discharge pressure to the inlet pressure of air is called

Compressor efficiency
Compression ratio
Expansion ratio
Volumetric efficiency

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Compressors, Gas Turbines and Jet Engines
The fuel consumption in gas turbines is accounted for by

Heating value
Higher calorific value
Lower heating value
Higher heating value

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Compressors, Gas Turbines and Jet Engines
The efficiency of the vane blower is (where W₁ = Workdone due to compression, and W₂ = Workdone due to back flow)

(W₁ + W₂)/W₁
W₂/(W₁ + W₂)
(W₁ + W₂)/W₂
W₁/(W₁ + W₂)

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Compressors, Gas Turbines and Jet Engines
The thrust on the rotor in a centrifugal compressor is produced by

Radial component
None of these
Tangential component
Axial component

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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