[10] 2) A centrifugal water pump has an impeller with outer radius 30cm, inner radius 10cm, vane angle at inlet, B1 =160

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10 2 A Centrifugal Water Pump Has An Impeller With Outer Radius 30cm Inner Radius 10cm Vane Angle At Inlet B1 160 1 (37.57 KiB) Viewed 15 times

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[10] 2) A centrifugal water pump has an impeller with outer radius 30cm, inner radius 10cm, vane angle at inlet, B1 =160° and vane angle at outlet pz=170°. The impeller is 5cm wide at inlet and 2.5cm wide at outlet. Neglecting losses, determine; (a) the discharge for shockless entrance (a) = 909) for pump speed of 1800 rpm, (b) the power input required for the same pump speed as in part (a), (C) hydraulic efficiency of the pump if the pump delivers a head of 120m. [5] (d) If the pump speed is increased to 3000 rpm and power input to 500 kW, what will be [5] the efficiency of this pump.