What is defined as the sum of static head and dynamic head in a pumping system?

In a pumping system, the sum of static head and dynamic head is defined as total head. Static head refers to the vertical distance to which the fluid must be lifted, while dynamic head accounts for the energy required to overcome the friction and other resistances as the fluid flows through the system. When you add these two components together, you determine the total energy required to pump the fluid effectively from one point to another. This total head is vital for assessing the performance of pumps and ensuring that they can adequately handle the desired flow rates and pressure requirements for a given application.

The other definitions in the options do not accurately represent this combination of static and dynamic head. Total lift, total pressure head, and total static pressure do not specifically capture the entire energy context required for moving a fluid in a pumping system. Thus, the total head provides the most complete and useful measure for engineers and operators working with pumping systems.