Workshop Technology
In submerged arc welding, an arc is produced between a

Bare metal electrode and the work
Carbon electrode and the work
Two tungsten electrodes and the work
Metal electrode and the work

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Workshop Technology
In a compound die

Both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram
Only one operation is performed at each stroke of the ram
Two or more operations are performed simultaneously at the single stroke of the ram
Two or more cutting operations are performed at one station of the press in every stroke of the ram

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Workshop Technology
Sand wash is a casting defect which

Results in a mismatching of the top and bottom parts of a casting
Occurs as sand patches on the upper surface of a casting
Results in general enlargement of the casting
Occurs near the ingates as rough lumps on the surface of a casting

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