When operated at N =1170 rpm, a centrifugal pump, with impeller diameter D=8 in , has shutoff head H0 =25 0 ft of water. At the same operating speed, best efficiency occurs at Q=300 gpm, where the head is H =21 9 ft of water. Fit these data at 1170 rpm with a parabola. Scale the results to a new operating speed of 1750 rpm. Plot and compare the results.