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To start an arc by dragging the electrode across the metal about an inch is known as the:

  1. Dragging method

  2. Scratch method

  3. Tapping method

  4. Wave method

The correct answer is: Dragging method

The correct answer is A. Dragging method. This method involves initiating the arc by dragging the electrode tip along the metal surface for about an inch before lifting it slightly to establish the arc. This technique creates a good starting point for welding and helps prevent the electrode from sticking to the metal. The other options are not correct: B. Scratch method is when the electrode is scratched against the metal surface to create a starting point for the arc. C. Tapping method involves lightly tapping the electrode on the metal to establish the arc. D. Wave method is not a common term used in welding practices.