Manufacturing And Production Technology
What type of fusion welding process is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production?

Electroslag welding
Thermit welding
Submerged arc Welding
Resistance welding

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Manufacturing And Production Technology
A jig is defined as a device which

Is used to check the accuracy of workpiece
Holds and locates a workpiece and guides and controls one or more cutting tools
Holds and locates a workpiece during an inspection or for a manufacturing operation
All of these

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