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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The maximum propulsion efficiency of a turbojet is attained at around following speed

2400 km/hr
550 km/hr
1050 km/hr
1700 km/hr

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Compressors, Gas Turbines and Jet Engines
For minimum work required to compress and deliver a quantity of air by multistage compression

The compression ratio in each stage should be same
All of the listed here
The work-done in each stage should be same
The intercooling should be perfect

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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

Vacuum
Discharge nozzle
Atmosphere
Back to the compressor

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Compressors, Gas Turbines and Jet Engines
Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm. The air pressure will be

1.03 kg/cm²
1.06 kg/cm²
0.53 kg/cm²
1.00 kg/cm²

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Compressors, Gas Turbines and Jet Engines
Separators are generally used in air compressor installations

After the inter-cooler
Between the after-cooler and receiver
Before first stage suction
Before the inter-cooler

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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

Pressure coefficient
Degree of reaction
Work factor
Slip factor

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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