Which four variables must be followed to deposit a successful weld?

• A. Distance, angle, speed, heat
• B. Voltage, amperage, current, heat
• C. Distance, speed, length, heat
• D. Distance, angle, wire size, speed

Answer: (A)

The main idea is that weld deposition quality is governed by four controllable factors that determine how much heat is delivered and how the bead forms: arc distance (arc length), torch angle, travel speed, and heat input. Keeping the arc length consistent helps stabilize the arc and produce uniform fusion. The torch angle directly shapes the bead and penetration—too steep or too shallow can distort the bead or cause undercut. Travel speed controls how much heat is deposited per unit length; moving too slowly can overheat and burn through, while moving too fast may underfill or lack fusion. Heat input ties everything together; it’s the overall energy reaching the weld, largely set by the electrical settings and adjusted through technique to achieve the desired bead profile and penetration. This combination—distance, angle, speed, and heat—is what leads to a successful weld deposition.

Other options mix electrical settings or filler-metal parameters with deposition factors that don’t directly govern bead quality in the same way, or include wire size or ambiguous terms, which are not the four core controls for deposition.