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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.

Has no effect on
Decreases
None of these
Increases

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Compressors, Gas Turbines and Jet Engines
For an irreversible gas turbine cycle, the efficiency and work ratio both depend on

Minimum cycle temperature alone
Pressure ratio alone
Both pressure ratio and maximum cycle temperature
Maximum cycle temperature alone

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Compressors, Gas Turbines and Jet Engines
Separators in compressor installations are located

After inter-cooler
Between after-cooler and air receiver
Before inter-cooler
After receiver

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Compressors, Gas Turbines and Jet Engines
The working fluid in a turbine is

In two phases
In three phases
In a single phase
In the form of air and water mixture

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Compressors, Gas Turbines and Jet Engines
Ratio of indicated h.p. to shaft h.p. in known as

Mechanical efficiency
Compressor efficiency
Volumetric efficiency
Isothermal efficiency

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

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

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