welding practice test

Q:- Which of the following may be added to an electrode flux to act as a stabiliser?

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1. Manganese
2. Silicon
3. Sodium silicate
4. Titanium dioxide

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Q:- While inspecting a weld on a 100mm thick high carbon steel plate with tolerance of +5mm you find the weld is visual acceptable, however the parent material has several arc strikes present adjusted the weld approximately 3mm drop deep, what course of action would you take?

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1. None I am only inspecting the weld
2. Recommended that the area be dressed smooth
3. Recommended that the area be dressed smooth followed by MPI
4. High carbon steel is net susceptible to cracking so I would weld over the arc strikes then blend them