Question

Which of the following welding uses consumable electrode?

• A. Thermit
• B. MIG
• C. TIG
• D. Laser

Hint:

Remember: MIG and SMAW use consumable electrodes; TIG uses a non-consumable tungsten electrode.

Answer 1

The Correct Option is B

MIG welding (Metal Inert Gas welding), also known as Gas Metal Arc Welding (GMAW), uses a consumable wire electrode which is continuously fed through the welding gun. This wire melts and becomes part of the weld pool, acting both as the electrode and the filler material. In contrast: - TIG welding uses a non-consumable tungsten electrode, and filler may be added separately. - Laser welding generally uses no electrode, just focused laser energy. - Thermit welding uses a chemical reaction between aluminum and iron oxide; no electrode is used. Thus, MIG is the correct choice where the electrode is consumable and actively participates in the weld.