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A centrifugal pump has an impeller of outer diameter, 20 cm and outer width,4 cm. The...

A centrifugal pump has an impeller of outer diameter, 20 cm and outer width,4 cm.

The pump delivers a flow of 30 L/s against a head of 10.5 m at an operating speed

of 550 rpm. If the hydraulic efficiency of the pump is 85% and the overall efficiency

is 80%, determine the impeller outlet vane angle and the power required to run the

pump.

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