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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

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

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

Low altitudes
High altitudes
High speeds
Low speeds

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

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

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Compressors, Gas Turbines and Jet Engines
Air-fuel ratio in a jet engine will be of the order of

0.41736111111111
2.5006944444444
0.62569444444444
0.83402777777778

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Compressors, Gas Turbines and Jet Engines
The air entry velocity m a rocket as compared to aircraft is

Zero
Same
Less
More

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Compressors, Gas Turbines and Jet Engines
In a reciprocating air compressor, the compression work per kg of air

Decreases as clearance volume increases
Is independent of clearance volume
Increases as clearance volume decreases
Increases as clearance volume increases

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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