Module Nine Review Questions with verified correct answers

Which of the following is a gas that would be used to purge a container before welding or cutting? nitrogen Which of the following compounds or elements are most likely to be encountered in welding and can create toxic fumes? cadmium Which of the following electrodes must remain in an oven until they are needed? 7018 The diameter of a SMAW electrode's metal core is also representative of ___________________. the proper arc length The easiest method of striking an arc is the _________________. scratching method E7018 electrodes are more difficult to strike an arc with because ___________. they stick to the base metal more easily Arc blow can cause defects such as excessive weld spatter and _______________. porosity Which of the following is not a common method of controlling or eliminating arc blow? Changing from an AC welding process to a DC process. When preparing to terminate a weld bead, __________________. slow the forward travel speed and begin to stand the electrode up The point where one weld bead stops and another begins to continue its progression is called a __________. restart A weld bead with very little or no side-to-side motion of the electrode required is called a(n) _________________. stringer bead The width of stringer and weave beads is usually specified in the drawing weld symbols or the _______________________. welding procedure specification (WPS) The whipping motion used to control the weld puddle should not be used with ________________. E7018 electrodes Overlapping beads are made by depositing connective weld beads parallel to one another to form a(n) ________________. flat surface The part of a fillet weld that can be convex or concave is called the ___________________. face