HP

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Definition
  1. Noun:
    • A unit of power equal to 746 watts: "hp" is an abbreviation for "horsepower," a standard unit of measurement for the rate at which work is done, commonly used to describe the power output of engines and motors.
Usage
  • "hp" is used as a singular noun, typically preceded by a number or quantifier. It is a technical term most common in engineering, automotive, and mechanical contexts to quantify mechanical or electrical power.
Examples
  • Noun:
    • The new tractor has an engine rated at 150 hp.
    • This motor generates 2 hp, which is sufficient for the pump.
Advanced Usage
  • "brake horsepower (bhp)": A specific measure of an engine's power output taken at the engine's crankshaft, not including losses from the gearbox, generator, or other auxiliary components.
    • The car's specifications list its maximum output as 300 bhp.
  • "shaft horsepower (shp)": A measure of the power delivered to a propeller or output shaft of a turbine engine.
    • The aircraft's engines produce over 5,000 shp each.
Variants and Related Words
  • Horsepower (n): The full, unabbreviated form of "hp."
    • Horsepower is a key metric for comparing vehicle performance.
  • Watt (n): The SI unit of power; 1 horsepower is approximately 746 watts.
    • To convert hp to watts, multiply by 746.
Synonyms
  • Power unit: A general term for any unit measuring power (e.g., watt, kilowatt).
  • Mechanical power: Describes the type of power often measured in horsepower.
Related Phrases
  • "hp rating": The specified horsepower of a machine or engine.
    • Always check the hp rating before buying a generator for your needs.
  • "under the hood": An idiom often used in automotive contexts; discussions of what is "under the hood" frequently mention horsepower.
    • What matters is not just the looks, but the horsepower under the hood.
Noun
  1. a unit of power equal to 746 watts

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