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.

The process, which causes the air to enter the impeller blades of a c

1.	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
Answer» B. Increased