Which statement describes MIG welding?

Which statement describes MIG welding?

• A. It uses a shield gas and a continuously fed wire electrode
• B. It uses a consumable flux-core rod only
• C. It uses a tungsten electrode
• D. It uses stick welding

Answer: (A)

MIG welding is defined by using shielding gas and a continuously fed wire electrode. The shielding gas protects the weld pool from contamination and stabilizes the arc, while the wire is fed through the welding gun to supply filler material as you weld. This combination distinguishes MIG from other processes: flux-core welding uses a wire with flux that provides shielding (often without a separate gas), TIG welding uses a tungsten electrode with filler added separately, and stick welding uses a coated consumable electrode. So, the statement about shielding gas plus a continuously fed wire electrode best describes MIG welding.

MIG welding is defined by using shielding gas and a continuously fed wire electrode. The shielding gas protects the weld pool from contamination and stabilizes the arc, while the wire is fed through the welding gun to supply filler material as you weld. This combination distinguishes MIG from other processes: flux-core welding uses a wire with flux that provides shielding (often without a separate gas), TIG welding uses a tungsten electrode with filler added separately, and stick welding uses a coated consumable electrode. So, the statement about shielding gas plus a continuously fed wire electrode best describes MIG welding.