Porosity of a welded joint may be caused by Production Engineering Mcqs March 15, 2019 BILAL KHATTAK0 A.Poor base metal B.Low welding current C.High welding current D.Wrong size of electrode E.None of the above Related Mcqs: Poor fusion in a welded joint may be due to Grey iron is usually welded by The bonding of a rubber sheet with a metal is done by Weld spatter defect in welding is generally the result of Arc blow is a welding defect which is encountered Weld spatter is In electrical resistance welding cleaning of metals to be welded In manufacturing ERW tube the type of welding generally used is In electrical resistance welding when the current passes through the metal, the greatest resistance is Aluminium castings are not repaired by