How much horsepower is being produced by a motor turning a load of 350 lb-in. at a speed of 1375 RPM?
A) hp = 0.765
B) hp = 7.65
C) hp = 76.52
D) hp = 765.19

Question

Quizplus · Accepted Answer

The formula to calculate horsepower is:
hp = (torque × RPM) / 5252
Where torque is in pound-inches and RPM is the speed of the motor.

Substituting the given values, we get:
hp = (350 lb-in. × 1375 RPM) / 5252 = 7.648 hp

Rounding off to two significant figures, the answer is 7.65 hp, which is closest to option B.

How Much Horsepower Is Being Produced by a Motor Turning