Choose the letter of the correct answer.
The student welder should pass test plate using both F3 and F4 electrodes. Why? (Obj. 15-4)
a. Because of the drastic difference in manipulative techniques.
b. Because the F3 electrodes are more difficult than the F4 group.
c. Because it is important to produce welds with defects and inclusions.
d. Because the AWS will not allow students to weld with a lower F number electrode simply by qualifying with a higher F number.
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