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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Reheating in a multistage expansion gas turbine ________ compressor work.

Decreases
Has no effect on
None of these
Increases

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Compressors, Gas Turbines and Jet Engines
The velocity of air entering in a rocket is ___ as compared to an aircraft.

More
Same
Less
Zero

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Compressors, Gas Turbines and Jet Engines
The thrust of a jet propulsion power unit can be increased by

Injecting ammonia into the combustion chamber
All of these
Injecting water into the compressor
Burning fuel after gas turbine

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

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

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Compressors, Gas Turbines and Jet Engines
Gas turbine works on

Rankine cycle
Carnot cycle
Brayton or Atkinson cycle
Ericsson cycle

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Compressors, Gas Turbines and Jet Engines
The maximum delivery pressure in a rotary air compressor is

10 bar
30 bar
50 bar
20 bar

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