For the pump with the shown graph, a) estimate the best efficiency point, show that in the graph and determine the head, flow and bhp for the 14 40 inches impeller at this point, b) from the results for the 14.40 in impeller in part (a), ard hy the using the similarity laws for the same pump velocity, predict the flow, head and bhp for the 8.0 inches impeller, c) comment your answers. Model 4010 Cane No. Min. Imp. Dia. 7.70 Sues SA IO 1760 RPM aco CM & FM Series 10 50 20 LA 140 14 20 40 35 100 7.20 in 20 15 -25 h 40 ich pecile grivity f a 10 125 250 375 S00 625 750 1000 1125 1250 Flow, gallmin Red Pencil = 10.40 inches