Welding - Welding objective questions and answers


21. Which of the following carbon steel is most weldable.......


   A.0.15 % carbon steel

   B.0.30 % carbon steel

   C.0.50 % carbon steel

   D.0.75 % carbon steel

   E.1.00 % carbon steel


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A.0.15 % carbon steel

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22. The temperature of plasma tourch is of the order of.......


   A.1000 oC

   B.5000 oC

   C.10000 oC

   D.33000 oC

   E.75000 oC


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D.33000 oC

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23. Arc welding in arc welding should be nearly equal to.......


   A.Diameter of electrode rod (d)

   B.1.5 d

   C.2 d

   D.3 d

   E.4 d


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A.Diameter of electrode rod (d)

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24. Arc length in arc welding should be equal to......


   A.Half the diameter of electrode rod

   B.Rod diameter

   C.Twice the rod diameter

   D.2.5 times the rod diameter

   E.None of the above


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B.Rod diameter

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25. Arc stability is better with.......


   A.AC welding

   B.DC welding

   C.Both AC with DC welding

   D.Specially designed wave forms

   E.Rectified supply


✔ View Answer


A.AC welding

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