ASVAB Mechanical Comprehension Practice Test 991282

Question 1 of 5
Power

Power is the rate at which work is done, P = w/t, or work per unit time. The watt (W) is the unit for power and is equal to 1 joule (or newton-meter) per second. Horsepower (hp) is another familiar unit of power used primarily for rating internal combustion engines. A 1 hp machine does 550 ft⋅lb of work in 1 second and 1 hp equals 746 watts.

How much work can a 2 hp engine do in 3 seconds?
8 ft⋅lb
4 ft⋅lb
1 ft⋅lb
3300 ft⋅lb