Explain brake and electrical horsepower, Civil Engineering

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Explain Brake and Electrical Horsepower

Brake horsepower (bhp) = whp/pump efficiency

Electrical or motor horsepower (ehp) or (mhp) = bhp/motor efficiency

Friction of heat horsepower (fhp) = bhp - whp

NOTE: In centrifugal pump problems, the highest horsepower is mhp. To solve typical problems you must start by determining the whp (equations in the table) and using the pump and motor efficiencies, solve for bhp, mhp and/or fhp.

mhp > bhp > whp

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