What does it mean if a hydraulic system is characterized as non-compressible?

When a hydraulic system is characterized as non-compressible, it means that the fluid within the system doesn't change its volume under pressure. In a non-compressible fluid, the fluid's density remains constant regardless of the pressure, which allows for predictable and consistent performance in hydraulic systems.

The characteristic of being non-compressible enables hydraulic systems to transmit force effectively since the pressure applied causes a direct and proportional movement of elements within the system. This property ensures that the flow rate of the hydraulic fluid can be controlled accurately, allowing the system to function efficiently and effectively in operating machinery or applications.

Other options do not pertain to the fundamental characteristics of non-compressibility directly. For instance, the ability to create a vacuum or respond to temperature changes does not specifically relate to non-compressibility, and altering the flow rate, while relevant in a broader context, does not define non-compressibility.