If the N PSH for the pump operating under the conditions specified in Problem 9.20 is 10 ft, how far off of the water surface could this pump be placed without engendering cavitation? Assume a water...

If the N PSH for the pump operating under the conditions specified in Problem 9.20 is 10 ft, how far off of the water surface could this pump be placed without engendering cavitation? Assume a water temperature of20°C.

If the N PSH for the p ump operating under the conditions as in Problem 9 .2 1 is 7 ft, at what height above the water surface could this pump be placed without risking cavitation?