Final answer:
In SMAW welding, 'dig' refers to a machine control affecting the depth of the weld penetration, where a higher 'dig' setting leads to deeper penetration due to increased arc force.
Step-by-step explanation:
In the context of the SMAW (Shielded Metal Arc Welding) process, the term 'dig' refers to a control on the welding machine that influences the depth of the weld penetration. It is not related to the angle at which the electrode is held, neither to the speed at which the electrode is moved, nor to the temperature of the welding arc directly. Instead, 'dig' affects the welding current's characteristics, which in turn can influence penetration. For instance, a higher 'dig' setting would increase the arc force, resulting in deeper penetration into the metal workpieces.