Workshop Technology
In welding copper alloys with TIG arc welding

Any one of the listed here
Direct current with straight polarity is used
Direct current with reversed polarity is used
Alternating current is used

ANSWER DOWNLOAD EXAMIANS APP

Workshop Technology
Spot welding is used for welding

Butt joints in plates having 0.025 mm to 1.25 mm thickness
Lap joints in plates having 0.025 mm to 1.25 mm thickness
Butt joints in plates having thickness above 3 mm
Lap joints in plates having thickness above 3 mm

ANSWER DOWNLOAD EXAMIANS APP