A pump has the characteristics given by Fig. 14.7. What discharge and head will be produced at maximum efficiency if the pump size is 50 cm and the angular speed is 45 rps? What power is required when pumping water at 10°C under these conditions?

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100 5.000 80 4.00 3.00 40 2.00 CH 1.00 CP 20 p.2 0.4 0.6 0.8 Co Cp and CH Efficiency, percent