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horsepower

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horsepower

Imperial unit of power, now replaced by the watt. It was first used by the engineer James Watt, who employed it to compare the power of steam engines with that of horses.

In the UK, one horsepower is equal to 550 foot-pounds per second or 745.7 watts. In the USA this figure has been rounded to 746 watts, and in the metric system it is 735.5 watts.


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Available in one-half horsepower to one and a half horsepower, the motors offer an integrated voltage change device that eliminates the need to move leads or plugs.
The new MT865B and MT875B, rated at 510 and 570 gross engine horsepower, respectively, took tractor horsepower and performance to the highest level ever recorded in production tractors at the Nebraska Tractor Test Laboratory* (NTTL), the officially designated tractor testing station for the US, located in Lincoln, Nebraska.
The regulations dictated that if a system contained a single compressor of 50 horsepower or greater, or that the combined horsepower of all the compressors in the building exceeded 100 horsepower, a licensed operator was required.
 
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