Oilers/Plant Tenders (HHC) Civil Service Exam 2026 – 400 Free Practice Questions to Pass the Exam

A power pump is characterized by being operated by a unit other than itself. This means that it relies on an external source of power to function, such as a motor or engine, which drives the pump mechanism. This external operation is a key feature that distinguishes power pumps from other types of pumps, which may be powered directly by the fluid being pumped or other means.

In contrast, a self-contained unit would imply that the pump has everything necessary for operation within its structure, which does not align with the definition of a power pump. The idea of a pump not requiring lubrication is also incorrect because many pumps require some form of lubrication to maintain efficiency and prevent wear. Lastly, stating that a power pump has an electric motor only is overly restrictive; while many power pumps do utilize electric motors, they can also be powered by hydraulic systems, gasoline engines, or other forms of energy. Thus, describing a power pump solely by its type of motor diminishes the broader definition of what constitutes a power pump.