WELDING 3 ARC AND RESISTANCE WELDING - Quiz

1) Which is the working principle of AC welding transformer?

External Induction Mutual Induction Core Induction Mutual Reduction

2) Which is a disadvantage of AC welding?

Less initial cost Less maintenance cost Not suitable for welding of Non-ferrous metals Freedom from Arc blow

3) Which is the function of welding rectifier?

Reduces AC voltage Increases AC voltage Convert AC into DC Increases AC current

4) Which is a disadvantage of DC Welding?

Higher working efficiency Lower working efficiency No noise Less maintenance cost

5) What is the purpose of prime mover provided in the welding generator?

To convert AC into DC To take AC main supply To rotate the Armature To supply DC for welding