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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The blades of gas turbine are made of

Stainless steel
Carbon steel
High alloy steel
High nickel alloy

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Compressors, Gas Turbines and Jet Engines
The advantage of multistage compression over single stage compression is

Lower power consumption per unit of air delivered
Higher volumetric efficiency
All of these
Decreased discharge temperature

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

Kerosene
High speed diesel oil
Methyl alcohol
Liquid hydrogen

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Compressors, Gas Turbines and Jet Engines
A compressor mostly used for supercharging of I.C. engines is

Reciprocating compressor
Axial flow compressor
Roots blower
Radial flow compressor

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Compressors, Gas Turbines and Jet Engines
The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation

1.0%
0.1%
5%
0.5%

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

Same
Less
Zero
More

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