What is required in a manual control system to operate effectively?

In a manual control system, a pilot device is essential for effective operation. The pilot device is the component through which the operator exerts control over the system. It may be a switch, lever, pushbutton, or any device that allows the operator to initiate, stop, or adjust the operation of the motor or machinery. Without this interface, the operator would not have a means to control the system directly, making the operation impractical.

The other options, while potentially beneficial in certain contexts, are not fundamental requirements for the basic functioning of a manual control system. Specialized training may enhance the operator's ability to interact with the system but is not a necessity for it to operate. An automated feedback system is characteristic of automatic control systems rather than manual ones, as manual systems traditionally rely on direct operator input without feedback loops. Remote control capabilities can be utilized for convenience in some systems, but they are not essential to the basic functioning of manual controls. Thus, the pilot device is the core element needed for effective operation in a manual control system.