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Compressors, Gas Turbines and Jet Engines

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

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

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Compressors, Gas Turbines and Jet Engines
The volume of air delivered in a medium capacity air compressor per unit time is

0.15 to 5 m³/s
0.1 to 1.2 m³/s
Above 5 m³/s
None of these

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Compressors, Gas Turbines and Jet Engines
Mechanical efficiency of gas turbines as compared to I.C engines is

None of these
Higher
Lower
Same

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Compressors, Gas Turbines and Jet Engines
Work ratio of a gas turbine plant is ratio of

Work done by turbine and heat supplied
Net work output and work done by turbine
Net work output and heat supplied
Work done by turbine and net work output

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Compressors, Gas Turbines and Jet Engines
1 m of air at atmospheric condition weighs approximately

2.2 kg
0.5 kg
1.0 kg
1.3 kg

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Compressors, Gas Turbines and Jet Engines
The compressor capacity with decrease in suction temperature

Increases
May increase or decrease depending on compressor capacity
Decreases
Remain unaffected

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