Which of the following statements is true about hydraulic pumps?

Hydraulic pumps are designed to increase fluid pressure, which is essential for the operation of hydraulic systems. When a pump is activated, it draws hydraulic fluid from a reservoir and expels it at a higher pressure, allowing it to perform work, such as lifting heavy loads or powering hydraulic machinery. This increase in pressure enables the fluid to transmit power efficiently throughout the system, making hydraulic pumps crucial components in various applications, from construction equipment to manufacturing processes.

The other statements do not accurately reflect the primary function of hydraulic pumps. For example, while pumps can contribute to fluid movement, they do not create low-pressure fluid; instead, they are intended to elevate pressure. Regulating fluid temperature and filtering contaminants are functions associated with different components of a hydraulic system, such as coolers and filters, rather than the pump itself. Understanding the fundamental role of hydraulic pumps in increasing fluid pressure is essential for those working with hydraulic systems.