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The process which causes the air to enter the impeller blades...

This question belongs to Mechanical Engineering Compressors, Gas Turbines And Jet Engines
Compressors, Gas Turbines and Jet Engines
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The process, which causes the air to enter the impeller blades of a centrifugal compressor at ________ velocity (without effecting the mass of air to flow and velocity of flow) is known as prewhirl.

Answer & Solution
Correct Answer: Option A
The process, which causes the air to enter the impeller blades of a centrifugal compressor at reduced velocity (without effecting the mass of air to flow and velocity of flow) is known as prewhirl.
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