Workshop Technology
The welding process used in joining mild steel shanks to high speed drills, is

Seam welding
Spot welding
Flash butt welding
Upset butt welding

ANSWER DOWNLOAD EXAMIANS APP

Workshop Technology
Piercing is an operation of cutting

A hole (other than cylindrical) in a sheet of metal by the punch and the die
A flat sheet to the desired shape
A number of holes evenly spaced in a regular pattern on a sheet of metal
A cylindrical hole in a sheet of metal by the punch and the die

ANSWER DOWNLOAD EXAMIANS APP