Motor Horsepower (\( MHP \)):

\[ MHP = \frac{BHP}{\xi_m} \]

Where:

• \( MHP \) is the motor horsepower, in horsepower (hp).
• \( BHP \) is the pump brake horsepower, in horsepower (hp).
• \( \xi_m \) is the motor efficiency, in decimal form.