An electric motor produces 2.0 hp in a V_rms = 120 V circuit.Using 1 hp = 746 W,how long would it take this motor to do 1.0 kWh of work? A)0.67 min B)0.67 h C)1.3 min D)1.3 h

Question

Quizplus · Accepted Answer

First, we need to convert the horsepower to watts:
2.0 hp * 746 W/hp = 1492 W

Then, we need to find the amount of time it takes to do 1.0 kWh of work:
1.0 kWh * 1000 W/kWh = 1000 W * h

We can use the formula W = P*t, where W is the work (in joules or watt-hours), P is the power (in watts), and t is the time (in hours). Rearranging the formula, we get:

t = W/P

Substituting the values we have:

t = (1000 W * h) / 1492 W
t = 0.67 h

Therefore, the answer is B) 0.67 h.

An Electric Motor Produces 2