The point on a pump curve where efficiency is maximized is called what?

• A. The Point Where Efficiency Is Maximized
• B. The Point Of Maximum Head
• C. The Point Of Minimum Flow
• D. The Point Of Zero Power Consumption

Answer: (A)

On a pump performance curve, efficiency varies with flow and reaches its highest value at a specific flow rate. That peak point is called the best efficiency point. At the BEP, the combination of hydraulic losses and mechanical losses is minimized for the given head, so the pump runs most economically and reliably. This is why the correct choice identifies the point where efficiency is maximized.

The maximum head occurs at very low or zero flow, where you get high pressure but far from the best efficiency. The minimum flow isn’t a defined efficiency benchmark, and zero power consumption isn’t a practical operating point for a running pump.