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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)/2
p₁ p₂

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Compressors, Gas Turbines and Jet Engines
If the flow of air through the compressor is parallel to its axis, then the compressor is

Centrifugal compressor
Reciprocating compressor
Axial flow compressor
Turbo compressor

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Compressors, Gas Turbines and Jet Engines
Gas turbines for power generation are normally used

In emergency
To enable start thermal power plant
To supply base load requirements
To supply peak load requirements

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Compressors, Gas Turbines and Jet Engines
It is not possible to use closed gas turbine cycle in aeronautical engines because

None of these
It is inefficient
It is bulky
It requires cooling water for its operation

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Compressors, Gas Turbines and Jet Engines
The thermodynamic efficiency of rotary compressor is based on

Adiabatic compression
Isothermal compression
Isentropic compression
Polytropic compression

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Compressors, Gas Turbines and Jet Engines
Work ratio of a gas turbine may be improved by

Decreasing the compression work
Both (A) and (C) above
Increasing the compression work
Increasing the turbine work

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