If a heat engine has an efficiency of 20% and its power output is 660 W,what is the rate of heat input from the combustion phase?

A) 132 W
B) 3,400 W
C) 3,300 W
D) 3,200 W
E) 3,100 W

Name: If a heat engine has an efficiency of 20% and its power output is 660 W,what is the rate of heat input from the combustion phase? A) 132 W B) 3,400 W C) 3,300 W D) 3,200 W E) 3,100 W
Brand: Quizplus
Rating: 4.7 (37 reviews)

Question

If a heat engine has an efficiency of 20% and its power output is 660 W,what is the rate of heat input from the combustion phase?
​
A) 132 W
B) 3,400 W
C) 3,300 W
D) 3,200 W
E) 3,100 W

Quizplus · Accepted Answer

Efficiency = (Power output / Heat input) x 100%
0.20 = (660 / Heat input) x 100%
Heat input = 660 / (0.20 x 100%) = 3,300 W

If a Heat Engine Has an Efficiency of 20% and Its