Workshop Technology
In shielded arc welding

Welding rod coated with slag is used
Large electrode is used
Welding rod coated with fluxing material is used
None of the listed here

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Workshop Technology
Notching is the operation of

Bending a sheet of metal along a curved axis
Cutting a sheet of metal in a straight line along the length
Removal of metal to the desired shape from the edge of a plate
Cutting a sheet of metal through part of its length and then bending the cut portion

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