Welding - Welding objective questions and answers

36. Flash butt welding is.......

   A.Gas welding

   B.Arc welding with straight polarity

   C.Arc welding with reverse polarity

   D.Resistance welding

37. The suitable welded material used in TIG welding is.......

   A.Aluminium

   B.Stainless steel

   C.Magnesium

   D.All of the above

38. The following welding process uses consumable electrodes.......

   A.TIG

   B.MIG

   C.Thermit

   D.Gas

39. Preheating is essential in welding for......

   A.High speed steel

   B.Stainless steel

   C.Cast iron

   D.German silver

40. The phenomeon of weld decay occurs in.......

   A.Cast iron

   B.Brass

   C.Bronze

   D.Stainless steel

   E.Carbon steel

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