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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Gas turbine as compared to internal combustion engine

All of the listed here
Has more efficiency
Produces uniform torque
Can be driven at a very high speed

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Compressors, Gas Turbines and Jet Engines
The efficiency of jet engine is

Higher at high altitudes
Higher at high speed
Lower at low speed
Same at all altitudes

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Compressors, Gas Turbines and Jet Engines
The ratio of the indicated power to the shaft power or brake power of the motor or engine required to drive the compressor, is called

Compressor efficiency
Isothermal efficiency
Volumetric efficiency
Mechanical efficiency

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Compressors, Gas Turbines and Jet Engines
There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would

None of these
Increase
Decrease
Remain same

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

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

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Compressors, Gas Turbines and Jet Engines
Gas turbine cycle with regenerator

Increases thermal efficiency
Allows operation at very high altitudes
Allows high compression ratio
Decreases heat loss is exhaust

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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