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Compressors, Gas Turbines and Jet Engines

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

None of the listed here
Isothermal compression
Polytropic compression
Isentropic compression

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Compressors, Gas Turbines and Jet Engines
Rotary compressors are suitable for

Large discharge at high pressure
Low discharge at high pressure
Low discharge at low pressure
Large discharge at low pressure

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Compressors, Gas Turbines and Jet Engines
Compression efficiency is compared against

Isentropic compression
Ideal compression
Isothermal compression
Adiabatic compression

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

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

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Compressors, Gas Turbines and Jet Engines
Pick up wrong statement. Surging phenomenon in centrifugal compressor depends on

Stagnation pressure at the outlet
Change in load
Mass flow rate
Pressure ratio

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Compressors, Gas Turbines and Jet Engines
The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is

More
Less
More/less depending on compressor capacity
Same

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