Steam Engine · World History

The term 'Horsepower' was originally coined by James Watt for what purpose?

  1. To measure the top speed and endurance of a racing horse
  2. To compare his engines' output to the work of draft horses
  3. To calculate the total weight and pressure of a steam boiler
  4. To describe the full destructive force of a steam explosion
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Correct answer: To compare his engines' output to the work of draft horses

Watt needed a way to market his engines to customers used to animal power. By calculating that a pony could pull 33,000 foot-pounds per minute, he created a standardized unit that helped buyers understand the value of his technology.

Difficulty: Medium Question 12 of 20

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