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Q:- A plug weld and a spot weld differ in which h of the following

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  • A plug weld has a hole in one member 
  • A spot weld has a hole in one member 
  • A spot weld is an arc weld 
  • A plug weld is a friction weld
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Q:- E Size and number of tack weld are

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  • An important consideration
  • They are depend on the thickness and base material being welded
  • For some material preheat may have to be used
  • All of the above