Which of the following is NOT a method of application for gas metal arc welding?

In gas metal arc welding (GMAW), the application methods are typically categorized into automatic, semi-automatic, and manual welding processes.

Automatic welding refers to systems that operate without direct human intervention, where the entire welding process is controlled by machines. Semi-automatic welding involves some degree of operator control, but the process is largely assisted by machinery, allowing for the welding arc and wire feed to be automatically controlled while the operator manages other aspects of the process.

Manual welding is where the welder has full control over the operation, manipulating the welding gun and feeding the wire without any mechanical assistance. This method requires significant skill and experience to ensure quality welds.

The term "hand-held" does not accurately describe a recognized method of application in the context of GMAW. While some welding equipment can indeed be held by hand during manual welding, "hand-held" isn't a formal category on its own compared to the standardized methods of application mentioned. Therefore, identifying “hand-held” as not being a recognized method of application is accurate, as it does not pertain to an established classification within GMAW practices.