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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Maximum delivery pressure is a rotary air compressor is of the order of

25 kg/cm²
10 kg/cm²
6 kg/cm²
16 kg/cm²

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Compressors, Gas Turbines and Jet Engines
In jet engines the products of combustion after passing through the gas turbine are discharged into

Back to the compressor
Vacuum
Atmosphere
Discharge nozzle

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Compressors, Gas Turbines and Jet Engines
As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio

Remain same
Increases
First increases and then decreases
Decreases

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Compressors, Gas Turbines and Jet Engines
The air is delivered ________ in one revolution in case of a three lobbed rotor.

Four times
Three times
Six times
Two times

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Compressors, Gas Turbines and Jet Engines
The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called

Pressure ratio
Degree of reaction
Pressure coefficient
Slip factor

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Compressors, Gas Turbines and Jet Engines
Ratio of indicated h.p. to shaft h.p. in known as

Compressor efficiency
Isothermal efficiency
Mechanical efficiency
Volumetric efficiency

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