The inlet of a centrifugal pump is 7 ft above the free surface from which it draws. The suction point is a submerged pipe. The supply line consists of 12 ft schedule 40 steel pipe and contains one long-radius elbow and one check valve. The discharge line is 2 in schedule 40 steel pipe and includes two (2) long radius elbows and an 80 ft run. The discharge is 20 ft above the free surface. All components are regular screwed. The water temperature is 70 oF. The following pump curve is available. Ignore entrance and exit effects. (a) What is the flow rate? (b) What can be said about the operation of this pump.

Flow Rate (gpm). 0 10 20 30 40 50 60 70 80 90

Head (ft) 110 108 105 102 98 93 87 79 66 50