Question

__________ is defined as the speed at which a pump will discharge a unit flow under a unit head at maximum efficiency.

(a) Specific speed

(b) Average speed

(c) Maximum speed

(d) Relative speed

The question was asked in an online interview.

I would like to ask this question from Well Pump topic in chapter Pumps and Pumping of Environmental Engineering

Answer 1

Right choice is (a) Specific speed

For explanation I would say: The speed at which the pump will discharge a unit flow under a unit head at maximum efficiency is called specific speed. It is denoted by NS.