Which of the following mainly decides the current to be employed is arc welding ?
Correct answer: B. Electrode size
- A. Plate thickness
- B. Electrode size
- C. Voltage across the arc
- D. Welded portion length
Explanation
In arc welding, electrode diameter mainly determines the suitable welding current because a larger electrode requires a higher current to melt properly. Plate thickness affects the selected electrode and passes, but it is not the primary direct control of current.
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