Mechanical Engineering > Gate 2020 Set-2 > Joining
Two plates, each of 6 mm thickness, are to be butt-welded. Consider the following
processes and select the correct sequence in increasing order of size of the heat affected
zone
1. Arc welding
2. MIG welding
3. Laser beam welding
4. Submerged arc welding
1. Arc welding
2. MIG welding
3. Laser beam welding
4. Submerged arc welding
Correct : a
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