Question

The proper length of arc may be judged by:

a. The sound of the arc.
b. The appearance of the arc.
c. The appearance of the weld.
d. All of the above.

Answer 1

The sound of the arc, the appearance of the arc, and the appearance of the weld can all provide clues about the proper length of the arc.

Step-by-step explanation:

The proper length of arc may be judged by: All of the above. The sound of the arc, the appearance of the arc, and the appearance of the weld can all provide clues about the proper length of the arc. For example, a steady and smooth sound along with a visually consistent and well-formed arc and weld indicate a proper arc length.