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Mr. Dubey • 100.64K Points
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Q. Which kind of resistance is experienced in upset butt welding?

  • (A) electric resistance
  • (B) magnetic resistance
  • (C) thermal resistance
  • (D) air resistance
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Explanation by: Mr. Dubey
in the making of an upset butt welding, there are jaws made of copper, into which the part to be welded is put, and hence a solid contact is made. at this point of contact, while the current flows, it gets transformed into heat because of electric resistance.

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