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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The combustion efficiency of a gas turbine using perfect combustion chamber is of the order of

0.75
0.99
0.85
0.9

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Compressors, Gas Turbines and Jet Engines
When the outlet angle from the rotor of a centrifugal compressor is more than 90°, then the blades are said to be

Backward curved
Radial
None of the listed here
Forward curved

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

Euler
Pressure coefficient
Isentropic efficiency
Compressor efficiency

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Compressors, Gas Turbines and Jet Engines
Open cycle gas turbine works on

Carnot cycle
Rankine cycle
Ericsson cycle
Brayton or Atkinson cycle

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Compressors, Gas Turbines and Jet Engines
In jet propulsion power unit, the inlet duct of diverging shape is used in order to

Collect more air
Beautify the shape
Convert kinetic energy of air into pressure energy
Provide robust structure

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Compressors, Gas Turbines and Jet Engines
In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the

Thrust and range of aircraft
Efficiency of the engine
Both (A) and (B)
None of these

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