Gas Metal Arc Welding MCQ with Answers

Flux cored arc welding (FCAW) is a semi-automatic arc welding process that is similar to metal active gas (MAG) welding. FCAW uses a continuous wire fed electrode, a constant-voltage welding power supply, and similar equipment to MAG welding.

There are two basic process variants; self shielded FCAW (without shielding gas) and gas shielded FCAW (with shielding gas). The difference in the two is due to different fluxing agents in the consumables, which provide different benefits to the user.

Tubular cored flux electrode provides protective slag in flux cored arc welding.

A welding helmet, commonly referred to as a “hood,” is one of the most important pieces of personal protective equipment that a welder must have. An adequate helmet protects the eyes and skin not only from severe sparks, but also from potentially vision-damaging ultraviolet and infrared rays emitted by the arc.

Helmet with filtered colour glass is used to protect face from UV and Infra-red radiation during welding.

Leather gloves is used as personnel protective equipment (PPE) to protect hand from burning injury.

Carbon monoxide gas is generated during GMAW on using CO₂ as shielding gas.