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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A closed cycle gas turbine works on

Rankine cycle
Ericsson cycle
Joule cycle
Carnot cycle

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Compressors, Gas Turbines and Jet Engines
Stalling of blades in axial flow compressor is the phenomenon of

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

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Compressors, Gas Turbines and Jet Engines
A centrifugal compressor works on the principle of

Conversion of pressure energy into kinetic energy
Conversion of kinetic energy into pressure energy
Generating pressure directly
Centripetal action

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Compressors, Gas Turbines and Jet Engines
Ramjet engine

Requires no air for its operation
Is not self operating at zero flight speed
Produces a jet consisting of plasma
Is self operating at zero flight speed

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Compressors, Gas Turbines and Jet Engines
For maximum work, the reheating should be done to an intermediate pressure of (Where p₁ = Maximum pressure, and p₂ = Minimum pressure)

(p₁ - p₂)/2
(p₁ + p₂)/2
p₁/p₂
p₁ p₂

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Compressors, Gas Turbines and Jet Engines
The ratio of the net work obtained from the gas turbine plant to the turbine work is known as

Work ratio
Pressure ratio
Compression ratio
None of these

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