The internal and external diameter of the impeller of a centrifugal pump are 200 mm and 400 mm respectively. The pump is running at 1200 rpm. Find the velocity of flow if the vane angle at inlet 20°.Given tan 20° = 0.363

The internal and external diameter of the impeller of a centrifugal pu

1.	The internal and external diameter of the impeller of a centrifugal pump are 200 mm and 400 mm respectively. The pump is running at 1200 rpm. Find the velocity of flow if the vane angle at inlet 20°.Given tan 20° = 0.363
A.	7.42 m/s
B.	3.34 m/s
C.	4.57 m/s
D.	6.67 m/s
Answer» D. 6.67 m/s