Question

The speed at which the centrifugal pump runs (in r.p.m)  is _____________

(a) 200

(b) 300

(c) 500

(d) 1200

I had been asked this question in an interview.

My question is from Types of Pumps topic in division Pumps and Pumping of Environmental Engineering

Answer 1

The correct answer is (c) 500

The best explanation: The speed at which the centrifugal pump runs lies in the range of 500 to 100 rates per minute (r.p.m). The direct connection of pump with driving machines is possible.