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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
For maximum work, the reheating should be done to an intermediate pressure of (Where p₁ = Maximum pressure, and p₂ = Minimum pressure)

(p₁ - p₂)/2
p₁ p₂
p₁/p₂
(p₁ + p₂)/2

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Compressors, Gas Turbines and Jet Engines
The net work input required for compressor with increase in clearance volume

Remains same
Increases
Increases/decreases depending on compressor capacity
Decreases

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

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

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Compressors, Gas Turbines and Jet Engines
Gas turbine cycle with regenerator

Decreases heat loss is exhaust
Allows high compression ratio
Increases thermal efficiency
Allows operation at very high altitudes

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Compressors, Gas Turbines and Jet Engines
The performance of air compressor at high altitudes will be ________ as compared to that at sea level.

Higher
None of these
Same
Lower

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Compressors, Gas Turbines and Jet Engines
Reheating in multistage expansion gas turbine results in

Decrease of heat loss in exhaust
High thermal efficiency
Reduction in compressor work
Maximum work output

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