The discharge pipe is 5 ft above the suction pipe the

Question

During the test of a centrifugal pump, a Bourdon pressure gage just outside the casing of the 12-in.-diameter suction pipe reads6 psig (i.e., vacuum).Onthe 10-in.-diameter discharge pipe another gage reads 40 psig. The discharge pipe is 5 ft above the suction pipe. The discharge of water through the pump is measured to be 4 ft³ /s. Compute the horsepower input of the test pump.