A centrifugal pump has inner and outer impeller diameters of 0.5 m and 1 m, respectively, and a width of 0.15 m. The outlet blade angle is 65° . At 350 rpm, the volume flow rate is 4 m3/s. Find:
(a) The exit blade angle so that the water enters the pump in the radial direction.
(b) The minimum power required.