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In: Mechanical Engineering

The radius of the impeller of a centrifugal pump at the inlet is 6 cm and...

The radius of the impeller of a centrifugal pump at the inlet is 6 cm and at the outlet is 10.5 cm. The blade angles β1 and β2 are respectively 33o and 21o respectively. The width of the impeller is uniform and 4.75 cm. The impeller rotates at 1200 rpm and pumps water (See Figure 1). Assuming radial entry, (a) the flow rate through the pump (b) the theoretical head (c) the power required assuming an efficiency of 75%. (d) the theoretical pump curve (the H-Q equation) (e) If the pump diameter were increased by 10% and the speed dropped by 10%, what would be the new flow and theoretical head?

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