A centrifugal pump has its impeller of 50 cm diameter at inlet, and it rotates at 1200 rpm. The tangential velocity of the impeller at the inlet is

A centrifugal pump has its impeller of 50 cm diameter at inlet, and it

1.	A centrifugal pump has its impeller of 50 cm diameter at inlet, and it rotates at 1200 rpm. The tangential velocity of the impeller at the inlet is
A.	16π m / s
B.	10π m / s
C.	12π m / s
D.	100π m / s
Answer» C. 12π m / s