What is not considered one of the five basic components of a hydraulic system?

• A. Pressure
• B. Reservoir
• C. Valve
• D. Pump

Answer: (A)

In a hydraulic system, the basic parts are physical components that store, move, control, and deliver fluid to create motion. Pressure, while essential to function, is a measurable condition rather than a part you assemble. The five fundamental components typically include a reservoir (to store hydraulic fluid), a pump (to move the fluid and generate pressure), a valve (to direct and regulate flow), an actuator (such as a cylinder or motor that converts fluid power into motion), and the hydraulic lines or connections that carry the fluid between parts. Because pressure is a property you observe and measure—varying with load and component arrangement—not a separate component itself. So the option that is not one of the basic components is pressure. The other choices—reservoir, valve, and pump—are indeed core components of a hydraulic system.