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.

A Reduced
B Increased
C Zero
D None of these

Correct Answer: Reduced

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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#Mechanical Engineering #Compressors #Gas Turbines And Jet Engines

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