Question

The Electrical water pump has two parts. One is an electrical motor and the other one is a pump or impellor. The motor drives the pump which in turn delivers water. If the efficiency of the motor is 90% and pump is 80% then what is their combined efficiency?
a) > 90% b) > 80% c) 72% d) 70%

Answer 1

…………………………72……………………………