How does a pneumatic system primarily operate?

A pneumatic system primarily operates by using compressed air to transmit and control power. The fundamental principle behind pneumatic systems is the utilization of air pressure to create motion and perform work. In these systems, energy is stored in the form of compressed air, which can be released to drive various components like cylinders and actuators. This method is effective for tasks such as moving parts, lifting loads, and powering tools, making it a common choice in industrial and automation applications.

The choice to use compressed air offers several advantages, including the ability to easily control the flow and pressure of air, a relatively lightweight system design, and the inherent safety of using air, which can prevent spills and contamination associated with fluid systems. Additionally, because air can be compressed and stored in tanks, pneumatic systems can provide bursts of power when needed.

The other options relate to different types of systems; hydraulic systems specifically use liquid under pressure, electric systems rely on motors and electrical energy for movement, and gravitational systems leverage the natural pull of gravity rather than controlled fluid dynamics. Therefore, the unique characteristics and advantages of compressed air distinctly identify it as the primary operating medium for pneumatic systems.