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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Water is injected in gas turbine cycle to

Control fire hazards
Increase efficiency
Control output of turbine
Control temperature

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Compressors, Gas Turbines and Jet Engines
Which of the following plants is smallest and lightest for generating a given amount of power?

Solar plant
Diesel engine
Gas turbine plant
Petrol engine

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Compressors, Gas Turbines and Jet Engines
As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio

Decreases
Remain same
Increases
First increases and then decreases

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Compressors, Gas Turbines and Jet Engines
Gas turbine works on

Brayton or Atkinson cycle
Carnot cycle
Ericsson cycle
Rankine cycle

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Compressors, Gas Turbines and Jet Engines
The maximum propulsion efficiency of a turbojet is attained at around following speed

2400 km/hr
550 km/hr
1700 km/hr
1050 km/hr

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

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

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