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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The stagnation pressure rise in a centrifugal compressor takes place

In the impeller only
In the inlet guide vanes only
In the diffuser only
In the diffuser and impeller

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Compressors, Gas Turbines and Jet Engines
The main purpose of reheating in gas turbine is to

Increase power output
Increase temperature
Reduce turbine size
Increase speed

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

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

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Compressors, Gas Turbines and Jet Engines
The efficiency of jet engine is

Higher at high altitudes
Same at all altitudes
Higher at high speed
Lower at low speed

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Compressors, Gas Turbines and Jet Engines
Phenomenon of choking in compressor means

Fixed mass flow rate regardless of pressure ratio
Increased inclination of chord with air steam
Reducing mass flow rate with increase in pressure ratio
No flow of air

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Compressors, Gas Turbines and Jet Engines
For supplying intermittent small quantity of air at high pressure, following compressor is best suited

Screw
Centrifugal
Axial
Reciprocating

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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