A pump was intended to run at 1750 rpm when driven by a 0.5-hp motor. What is the required power rating of a motor that will turn the pump at 2000 rpm? A pump delivering 1100 1/s of water is turning...

A pump was intended to run at 1750 rpm when driven by a 0.5-hp motor. What is the required power rating of a motor that will turn the pump at 2000 rpm?

A pump delivering 1100 1/s of water is turning at 900 rpm. The pump adds 7 ft of head to the water.

a. What is the specific speed of this pump?

b. If the pump is a double-suction pump operating under the same conditions, what would be the specific speed?