Pneumatic systems primarily require what to operate?

Pneumatic systems primarily require compressed air to operate because they utilize the energy stored in compressed air to perform work. The fundamental principle of these systems is based on the movement and control of air under pressure.

Compressed air is generated using an air compressor, which compresses atmospheric air and stores it in a tank. This pressurized air is then directed through various components such as valves, cylinders, and actuators to create motion or force, enabling tasks such as lifting, moving, and clamping.

In contrast, electricity is associated with electrical systems, hydraulic fluids are used specifically in hydraulic systems that rely on liquid pressure, and mechanical pressure typically refers to physical forces applied manually or through mechanical systems. Hence, while all these options represent different types of systems or methods of operation, the essence of pneumatic systems lies in their reliance on compressed air to function effectively.