Question

1 Horse-power is equal to _______

(a) 745.7 W

(b) 741 W

(c) 747.7 W

(d) 740 W

This question was posed to me during an online interview.

I would like to ask this question from Induction Motors topic in section Speed Control of Direct Current Motors & Induction Motors of Electric Drives

Answer 1

Right choice is (a) 745.7 W

To explain I would say: 1 Horse-power is equal to 745.7 W. It is equal to the rate at which work is done. Horse-power is the amount of work done by horse in carrying the weight of 90 kg for 50 meters in 60 seconds.