The discharge, head, and efficiency data of a centrifugal pump follow. The best efficien...

The discharge, head, and efficiency data of a centrifugal pump follow. The best efficiency point (bep) is at 2500 gpm. The impeller diameter is 15 in., and the operating speed is 2500 rpm. Plot the characteristic curves of head discharge and efficiency as diagramed in Figure 4-11, and locate the bep and the recommended pump operating range. Calculate the power input at the bep.