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A centrifugal water pump has an impeller with backward-curved vanes and an inner diameter of 0.1 m, an outer diameter of 0.25 m, and a blade height of 4 cm. It operates at 1200 rpm. Water enters the impeller at the blade angle of 50° and leaves at the blade angle of 30°. The volume flow rate is 0:18m3/s. Determine the shaft torque and power. Determine the pressure rise when the fluid velocity leaving the pump diffuser is the same as that entering.
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