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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The inlet pressure is always ___ the discharge pressure.

Equal to
More than
Less than
None of the listed here

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Compressors, Gas Turbines and Jet Engines
In a closed cycle gas turbine, the air is compressed

Isentropically
Isothermally
Polytropically
None of these

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

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

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Compressors, Gas Turbines and Jet Engines
In an axial flow compressor, the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as

Degree of reaction
Work factor
Slip factor
Pressure coefficient

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Compressors, Gas Turbines and Jet Engines
For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will

Decrease
Other factors control it
Increase
Remain unaffected

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Compressors, Gas Turbines and Jet Engines
The ratio of isentropic work to Euler work is known as

Pressure coefficient
Polytropic reaction
Work coefficient
Slip factor

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