ASVAB Mechanical Comprehension Practice Test 813753

Question 2 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 8 hp engine that's 85% efficient?
7480 \( \frac{ft⋅lb}{s} \)
1246.7 \( \frac{ft⋅lb}{s} \)
3740 \( \frac{ft⋅lb}{s} \)
680 \( \frac{ft⋅lb}{s} \)