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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 speeds
Low altitudes
High speeds
High altitudes

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Compressors, Gas Turbines and Jet Engines
Which is false statement about air receivers?

These increase compressor efficiency
These knock out some oil and moisture
These are used to dampen pulsations
These act as reservoir to take care of sudden demands

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Compressors, Gas Turbines and Jet Engines
In the aircraft propellers

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

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Compressors, Gas Turbines and Jet Engines
In air breathing jet engine, the jet is formed by expanding

Plasma
Liquid
Solids
Highly heated atmospheric air

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Compressors, Gas Turbines and Jet Engines
The thermal efficiency of a gas turbine as compared to a diesel plant is

Less
Depends on other factors
Same
More

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Compressors, Gas Turbines and Jet Engines
A closed gas turbine in which fuel is burnt directly in the air is not possible because of

Increasing gas temperature
High friction losses
High specific volume
Paucity of O2

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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