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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Which of the following fuels can be used in turbojet engines?

Kerosene
High speed diesel oil
Liquid hydrogen
Methyl alcohol

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Compressors, Gas Turbines and Jet Engines
A compressor at high altitude will draw

More power
More/less power depending on other factors
Same power
Less power

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Compressors, Gas Turbines and Jet Engines
Propulsive efficiency is defined as ratio of

Engine output and propulsive power
Thrust power and propulsive power
Propulsive power and fuel input
Thrust power and fuel energy

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Compressors, Gas Turbines and Jet Engines
The fuel consumption in gas turbines is accounted for by

Higher calorific value
Lower heating value
Higher heating value
Heating value

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Compressors, Gas Turbines and Jet Engines
In multistage compressor, the isothermal compression is achieved by

By constantly cooling the cylinder
By insulating the cylinder
Employing inter-cooler
By running compressor at very slow speed

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

Low altitudes
High altitudes
Low speeds
High speeds

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