203k views
4 votes
A machine supply energy at a rate of 4000 W and does used to work at a rate of 3760 W what is the efficiency of the machine?

1 Answer

6 votes

Efficiency = (work output / work input) * 100

= (3760 / 4000) * 100

Efficiency = 0.94 * 100

Efficiency = 94 %

User Jae Heon Lee
by
9.2k points