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Compressors, Gas Turbines and Jet Engines

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

p₂/p₁ = p₃/p₂ = p₄/p₃
p₃/p₁ = p₄/p₂
p₁ p₂ = p₃ p₄
p₁ p₃ = p₂ p₄

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Compressors, Gas Turbines and Jet Engines
A closed cycle gas turbine gives ________ efficiency as compared to an open cycle gas turbine.

Same
Higher
None of these
Lower

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Compressors, Gas Turbines and Jet Engines
Only rocket engines can be propelled to space because

They are not air breathing engines
They have high propulsion efficiency
They can generate very high thrust
These engines can work on several fuels

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Compressors, Gas Turbines and Jet Engines
In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to

N.T.P. conditions
20°C and 1 kg/cm²
0°C and 1 kg/cm²
Intake temperature and pressure conditions

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Compressors, Gas Turbines and Jet Engines
The compression ratio in a gas turbine is of the order of

3.5 : 1
0.20902777777778
0.33402777777778
0.50069444444444

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Compressors, Gas Turbines and Jet Engines
In a jet propulsion unit, the products of combustion after passing through the gas turbine are discharged into

Back to the compressor
Discharge nozzle
Vacuum
Atmosphere

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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