A 100-kW motor with an efficiency of 75% drives a centrifugal pump delivering a flow of 100 I/s against a head of 30 m. What is the pump efficiency? A pump is required to operate at 2000 rpm with a...

A 100-kW motor with an efficiency of 75% drives a centrifugal pump delivering a flow of 100 I/s against a head of 30 m. What is the pump efficiency?

A pump is required to operate at 2000 rpm with a head of 8 m and a discharge rate of 0.12
/s. Determine the type of the required pump.