ASVAB Mechanical Comprehension Practice Test 457171

Question 3 of 5
Efficiency

The efficiency of a machine describes how much of the power put into the machine is turned into movement or force. A 100% efficient machine would turn all of the input power into output movement or force. However, no machine is 100% efficient due to friction, heat, wear and other imperfections that consume input power without delivering any output.

What is the power output of a 6 hp engine that's 80% efficient?
2640 \( \frac{ft⋅lb}{s} \)
880 \( \frac{ft⋅lb}{s} \)
660 \( \frac{ft⋅lb}{s} \)
10560 \( \frac{ft⋅lb}{s} \)