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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?

Methyl alcohol
Liquid hydrogen
High speed diesel oil
Kerosene

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Compressors, Gas Turbines and Jet Engines
Isothermal compression efficiency can be attained by running the compressor

At zero speed
At very high speed
At very slow speed
At average speed

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Compressors, Gas Turbines and Jet Engines
The air power of the compressor is also known as

Indicated power
Brake power
None of these
Frictional power

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Compressors, Gas Turbines and Jet Engines
Pressure ratio in gas turbines is the ratio of

Pressures across the turbine
Compressor pressure ratio
Inlet pressure to exhaust pressure
Highest pressure to exhaust pressure

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

High speeds
High altitudes
Low altitudes
Low speeds

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

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

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