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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The ideal efficiency of simple gas turbine cycle depends on

Pressure ratio
Minimum cycle temperature
All of these
Maximum cycle temperature

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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
Atmospheric
Slightly less than atmospheric
Slightly more than atmospheric

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Compressors, Gas Turbines and Jet Engines
Inter cooling in compressors

Cools the delivered air
Is the standard practice for big compressors
Enables compression in two stages
Results in saving of power in compressing a given volume to given pressure

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Compressors, Gas Turbines and Jet Engines
The work ratio of a gas turbine plant is defined as the ratio of

Actual heat drop and isentropic heat drop
Net work output and heat supplied
Net work output and isentropic heat drop
Net work output and work done by turbine

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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
Axial component
Tangential component

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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)

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

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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