Which of the following is not a listed GTAW electrode tip shape?

• A. Pointed
• B. Rounded
• C. Square
• D. Clipped

Answer: (C)

In GTAW, the shape of the tungsten electrode tip affects how the arc concentrates heat and how stable the arc is. A pointed tip concentrates current for precise, narrow arcs suited to thin material or fine welds. A rounded tip (ball) broadens the arc and helps with stability, which is often preferred for AC welding and for larger arcs. A clipped tip shortens the point to produce a blunt end, altering current density and arc interaction for certain positions or welds. Square, however, isn’t a standard term used to describe GTAW electrode tips; the common, taught shapes are pointed, rounded, and clipped. That’s why square is not listed.