For the 2 x 3 - 10 centrifugal pump performance curve shown, at what head will the pump having an 8-in impeller operate at its highest efficiency? List the pump’s capacity, power required, efficiency, and the required NPSH at that head.

For the 2 x 3 10 centrifugal pump performance curve shown at what head will the pump having an 8in impeller operate at its highest efficiency List the pumps cap class=