admin Posted February 27, 2019 Report Share Posted February 27, 2019 What do you understand by straight polarity and reverse polarity when are welding with direct current? Is there any choice of polarity in a.c. welding and why? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer Link to comment Share on other sites More sharing options...
Recommended Posts