Which information is typically found on a pump curve?

A pump curve provides critical performance data that informs operators about how a pump will operate under varying conditions. The correct choice includes head capacity, brake horsepower (BHp) or net positive suction head (NPSH), and efficiency.

Head capacity indicates how much lift (or head) the pump can achieve at different flow rates. This is essential for determining whether the pump can deliver the desired flow to the infrastructure it's serving. Brake horsepower is a measure of the power that the pump requires to function effectively, providing insights into the energy consumption based on its operational efficiency. Efficiency data is crucial for understanding how effectively the pump converts input power into pumping power, allowing operators to assess performance and cost-effectiveness over time.

While pressure drop, pump weight, and energy consumption are important operational considerations, they are not typically illustrated on the pump curve itself. Instead, pressure drop can be influenced by the system design, and pump weight is a physical characteristic that doesn't relate to pump performance graphs. Energy consumption, while relevant, is a result of the pump's performance and is accounted for indirectly through the parameters listed in the pump curve. The correct response encapsulates the key operational characteristics that help in selecting and evaluating pump performance in real operational contexts.