An arc blow is a welding defect that is countered with the help of carrying :

(a) the are welding using AC supply
(b) the thermit welding
(c) the arc welding using DC supply
(d) the resistance welding

Anurag Mishra Professor Asked on 1st February 2016 in Physics.
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    Answer: (c) the arc welding using DC supply 

    Anurag Mishra Professor Answered on 14th February 2016.
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