What is the equivalent energy consumption for a 5 horsepower motor operating for 9 hours in kilowatt-hours?

To determine the energy consumption of a 5 horsepower motor operating for 9 hours, it is essential to convert the horsepower into kilowatts, as energy consumption is typically measured in kilowatt-hours (kWh).

1 horsepower is equivalent to approximately 0.746 kilowatts. Therefore, a 5 horsepower motor can be calculated as follows:

5 horsepower × 0.746 kW/hp = 3.73 kW

Next, to find the total energy consumption over 9 hours, you multiply the power in kilowatts by the number of hours the motor operates:

3.73 kW × 9 hours = 33.57 kWh

Rounding to one decimal place, this value is approximately 33.6 kWh. This calculation aligns precisely with the selected choice, making it the correct answer. Understanding this conversion and calculation is vital for determining energy use effectively in various contexts, which is key for resource management and efficiency.