GAS METAL ARC WELDING - Quiz

1) Which type of electrodes are used in MAG/CO₂ welding?

Flux coated electrodes Bare wire electrode Flux cored electrodes Guided bend test Guided bend test Tungsten electrode

2) What is the range of electrode for MAG / CO₂ welding?

0.8 to 1.6 mm 0.7 to 1.3 mm 0.6 to 0.9 mm 0.5 to 0.7 mm

3) What type of operation is generally used in GMAW?

Automatic Semi automatic Fully automatic Manual method

4) Which heat treatment of steel increases hardness, but decreases strength and ductility?

Annealing Hardening Normalising Case hardening

5) Which heat treatment process produces only outer surfaces of job hardened, to some depth?

Annealing Hardening Normalising Case hardening