What is the definition of pneumatic systems?

Pneumatic systems are defined as systems that utilize compressed air or gas to transmit and control power. This type of system relies on the properties of gases, particularly their ability to be compressed, allowing for the storage and transmission of energy. When air or gas is compressed, it can be used to operate various tools and machinery, moving pistons or actuators to perform work.

The use of compressed air offers several advantages, such as the ability to provide a clean and safe power source, reduced risk of fire when compared to other energy sources, and a relatively low maintenance requirement. These systems are widely employed in various applications, including manufacturing, automation, and even certain types of transportation.

Other options mention hydraulic systems, electrical systems, or mechanical devices. While those systems have their specific functions and benefits, they do not pertain to the definition of pneumatic systems, which are distinctly characterized by the use of compressed air or gas as their energy medium.