Question

How many joules of electrical energy will a quarter horse power motor consume in one hour?

Answer 1

Dear Student,

◆ Answer -

W = 6.714×10^5 J

● Explanation -

# Given -

t = 1 hour

P = 1/4 hp

# Solution -

First we'll convert power in SI units.

P = 1/4 hp

P = 1/4 × 746 W

P = 186.5 W

We'll also covert time in SI units -

t = 1 hr

t = 3600 s

Energy consumed by the motor in an hour is -

W = P × t

W = 186.5 × 3600B

W = 6.714×10^5 J

Therefore, 6.714×10^5 J energy consumed by the motor in an hour.

Best luck...