A centrifugal pump running at 2,000 rpm has internal and external impeller diameter of 250 mm and 350 mm, respectively. The vane angles of the impeller at inlet and outlet are 25° and 30° ,...

A centrifugal pump running at 2,000 rpm has internal and external impeller diameter of 250 mm and 350 mm, respectively. The vane angles of the impeller at inlet and outlet are 25° and 30° , respectively. If water enters the impeller radially and velocity of flow remains constant. Determine the work done by the impeller per unit weight of water.