Dear Student,

Any system that transfers energy using pressurized incompressible hydraulic fluids is a hydraulic system . It works on the principle of Pascal’s law. That is, when a pressure is applied to a hydraulic fluid stored in a container, it will be equally distributed in all direction.

The hydraulic energy produced as a result of this energy transfer is used for applications like lifting, holding and moving goods. Hydraulic fluids perform four basic functions. These are listed below.

• The primary function is to create force and motion as flow converts to pressure near the point of use.
• Second, by occupying the space between metal surfaces, the fluid forms a seal, which provides a pressure barrier and helps exclude contaminants.
• The third function is lubrication of metal surfaces.
• The fourth and final function is to cool system components.

Hope you understand.