Compressors, Gas Turbines and Jet Engines
In jet propulsion power unit, the inlet duct of diverging shape is used in order to

Provide robust structure
Collect more air
Beautify the shape
Convert kinetic energy of air into pressure energy

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Compressors, Gas Turbines and Jet Engines
Which one of the following is the effect of blade shape on performance of a centrifugal compressor?

Forward curved blades produce lower pressure ratio
Forward curved blades has higher efficiency
Backward curved blades lead to stable performance
Backward curved blades has poor efficiency

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Compressors, Gas Turbines and Jet Engines
Which of the following statement is correct relating to rocket engines?

The combustion chamber in a rocket engine is directly analogous to the reservoir of a supersonic wind tunnel
All of these
The exit velocities of exhaust gases are much higher than those in jet engine
The stagnation conditions exist at the combustion chamber

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