Which statement about TIG welding is true?

Which statement about TIG welding is true?

• A. Arc welding uses a non-consumable electrode.
• B. TIG uses a non-consumable electrode with optional filler.
• C. MIG uses a shielding gas and a consumable wire.
• D. TIG uses a consumable wire.

Answer: (B)

TIG welding uses a non‑consumable tungsten electrode to create the arc, and you can add filler metal separately if the joint requires it. The electrode doesn’t melt away during welding, so the filler is fed manually when needed, giving precise control for thin or delicate materials. Shielding gas (usually argon or a mix) protects the weld pool from the atmosphere, which is also characteristic of TIG. This combination—non‑consumable electrode with optional filler—is what makes the true statement about TIG. The other options describe different processes or inaccurately describe TIG (for example, a consumable wire is not used in TIG).

TIG welding uses a non‑consumable tungsten electrode to create the arc, and you can add filler metal separately if the joint requires it. The electrode doesn’t melt away during welding, so the filler is fed manually when needed, giving precise control for thin or delicate materials. Shielding gas (usually argon or a mix) protects the weld pool from the atmosphere, which is also characteristic of TIG. This combination—non‑consumable electrode with optional filler—is what makes the true statement about TIG. The other options describe different processes or inaccurately describe TIG (for example, a consumable wire is not used in TIG).