from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The actual or useful horsepower of an engine, usually determined from the force exerted on a friction brake or dynamometer connected to the drive shaft.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The useful
horsepowerof an engineas measured at its drive shaft.
from Wiktionary, Creative Commons Attribution/Share-Alike License
The term refers to a method of measuring the usable power of an engine by connecting a brake to the drive shaft of the engine. Other methods have been developed but the term remains.
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