GAS METAL ARC WELDING - Quiz

1) Why the welder's cloth should be free from oil, grease etc, while welding?

To protect the job To deflect the arc rays To avoid catching fire To safe guard your inner cloth

2) Which electrode wire is more suitable for carbon steel fabrication in GMAW process?

70S - 6 70T - 2 70S - 2 70S - 3

3) Which metal transfer process in GMAW produces strong weld with least spatter?

Spray transfer Globular transfer Dip transfer Pulsed transfer

4) Why the argon and CO₂ mixing gas used in FCAW?

Smooth spray transfer of melt Smooth globular transfer Smooth pulsed transfer Smooth dip transfer

5) How the pre-heating temperature is checked before welding wrought iron or cast metals?

Flow of spatters Size of blow holes Temperature indicating crayon Count of pin holes