Any device that operates by using fluid power is considered a "hydraulic machine in India". These devices use tiny tubes and hoses to transfer large amounts of power from one location to another. The machine's motors and hydraulic cylinders direct the pressurized fluid to the end effectors after it has passed through many control valves and tubes. This is where the process happens.

Pascal's law serves as the main operating principle of fluid power, which is what makes hydraulic equipment functional. The claim states that pressure applied to any section of a liquid in a container will be dispersed uniformly in all directions throughout the liquid, resulting in uniform pressure on the liquid everywhere.