Final answer:
High side float controls are commonly used in hydraulic systems to regulate fluid levels in a tank or reservoir.
Step-by-step explanation:
High side float controls are commonly used in hydraulic systems. These systems use a float to control the level of fluid in a tank or reservoir. The float is connected to a valve that opens or closes depending on the position of the float. When the fluid level rises above a certain point, the float rises with it and closes the valve, stopping the flow of fluid into the tank. When the fluid level drops below a certain point, the float lowers and opens the valve, allowing fluid to flow into the tank.