Which of the Following Is True of Grinding Tungsten Electrodes

Multiple Choice

Which of the following is true of grinding tungsten electrodes?

A) A grinder should never be used to clean contaminated tungsten.
B) The grinder used to sharpen tungsten should have a coarse stone.
C) A fine, hard grinding stone will result in more tungsten breakage and a poor finish.
D) If the grinder is used for metals other than tungsten, particles of these metals may become trapped on the tungsten as it is ground, resulting in contamination when the arc is started.