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Compressors, Gas Turbines and Jet Engines

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

Low altitudes
High speeds
High altitudes
Low speeds

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Compressors, Gas Turbines and Jet Engines
The air-fuel ratio in gas turbines is of the order of

7: 1
30: 1
50: 1.
15: 1

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Compressors, Gas Turbines and Jet Engines
In the aircraft propellers

The propulsive matter is caused to flow around the propelled body
Propulsive matter is ejected from within the propelled body
All of these
Its functioning does not depend on presence of air

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

Higher
None of these
Lower
Same

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Compressors, Gas Turbines and Jet Engines
The power available for takeoff and climb in case of turbojet engine as compared to reciprocating engine is

More
Less
May be less or more depending on ambient conditions
Same

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Compressors, Gas Turbines and Jet Engines
The material commonly used for air craft gas turbine is

Stainless steel
Timken, Haste alloys
High alloy steel
Duralumin

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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