The relation between horse power and watt is_________________?
Correct answer: B. 1 hp = 746 watts
- A. 1 hp = 546 watts
- B. 1 hp = 746 watts
- C. 1 hp = 1000 watts
- D. 1 hp = 946 watts
Explanation
The mechanical horsepower is defined as approximately 746 W. Thus 1 hp = 746 watts, where a watt is 1 J/s. Students may choose c by confusing horsepower with the rounded value 1 kilowatt, but 1000 W is not the standard mechanical horsepower.
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About Power
Power is the rate at which work is done or energy is transferred, with average power calculated over a time interval and instantaneous power found from P = Fv when force and velocity are aligned. Work includes units, mechanical efficiency, and the distinction between power and total work or energy.
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