True or False: The cable from the workpiece back to the welding machine is referred to as the "ground lead".

The statement that the cable from the workpiece back to the welding machine is referred to as the "ground lead" is true. The cable that connects the workpiece to the welding machine serves as a return path for the electric current, which is essential for establishing a complete electrical circuit necessary for welding. This connection ensures that the welding equipment functions correctly; without it, proper electrical flow is interrupted, leading to ineffective welding.

The term "ground lead" is often used now to describe the lead that connects the workpiece to the grounding point. However, in welding terminology, this lead serves the dual purpose of grounding the circuit while also providing the return path for current, ensuring safety and effective operation. Recognizing this terminology is important for understanding electrical systems in welding processes.