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Compressors, Gas Turbines and Jet Engines

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

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

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Compressors, Gas Turbines and Jet Engines
The criterion of the thermodynamic efficiency for rotary compressor is

Polytropic compression
Isentropic compression
Isothermal compression
None of the listed here

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Compressors, Gas Turbines and Jet Engines
Propulsion efficiency of the following order is obtained in practice

0.72
0.5
0.6
0.34

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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
Gas turbine plant
Petrol engine
Diesel engine

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Compressors, Gas Turbines and Jet Engines
The blades of gas turbine are made of

High alloy steel
Stainless steel
High nickel alloy
Carbon steel

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Compressors, Gas Turbines and Jet Engines
Free air is the air at

Atmospheric conditions at any specific location
0°C and standard atmospheric conditions
20°C and 1 kg/cm² and relative humidity of 36%
15°C and 1 kg/cm²

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