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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The output of a gas turbine is 300 KW and its efficiency is 20 percent, the heat supplied is

600 KW
150 KW
6000 KW
15 KW

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Compressors, Gas Turbines and Jet Engines
The main purpose of reheating in gas turbine is to

Increase speed
Increase temperature
Reduce turbine size
Increase power output

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Compressors, Gas Turbines and Jet Engines
The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)

p₂ = p₁/p₃
p₂ = p₁ × p₂
p₂ = p₃/p₁
p₂ = p₁ × p₃

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Compressors, Gas Turbines and Jet Engines
For perfect intercooling in a two stage compressor

p₁ = p₂ p3
p₁ = p3
p₁/p₃ = p₂/p₁
p₂/p₁ = p₃/p₂

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Compressors, Gas Turbines and Jet Engines
Turbofan engine employs

Two or more air streams
One air stream
Solid fuel firing
No air stream

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Compressors, Gas Turbines and Jet Engines
The gas in cooling chamber of a closed cycle gas turbine is cooled at

Constant pressure
Constant temperature
None of the listed here
Constant volume

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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