While rotating at 900 rpm, a centrifugal pump delivers 2500 gpm of water at a head of 75 ft. If the impeller diameter is 1.5 ft. and the blade width is 1.75 in., find the (a) blade angle β2, (b)...

While rotating at 900 rpm, a centrifugal pump delivers 2500 gpm of water at a
head of 75 ft. If the impeller diameter is 1.5 ft. and the blade width is 1.75 in.,
find the (a) blade angle β2, (b) radial velocity Vr2, and (c) blade speed u2. Assume
no whirl at the inlet.
Ans: β2=12.5°; Vr2=8.1 ft./s; u2=70.7 ft./s