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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A rocket engine uses __________ for the combustion of its fuel.

Compressed atmospheric air
Surrounding air
Its own oxygen
None of these

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Compressors, Gas Turbines and Jet Engines
In a single stage, single acting reciprocating air compressor, without clearance, the work-done on the air during isentropic compression is ________ the heat required to raise the temperature of air from T₁ to T₂ at a constant pressure.

Greater than
Less than
Equal to
None of these

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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
The minimum work required for a three stage reciprocating air compressor is ___ the work required for each stage.

Six times
Double
Equal to
Three times

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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
Less power
Same power

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Compressors, Gas Turbines and Jet Engines
The work ratio of a gas turbine plant is defined as the ratio of

Net work output and heat supplied
Net work output and isentropic heat drop
Actual heat drop and isentropic heat drop
Net work output and work done by turbine

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