When selecting the electrode with the designation E4948, what does the third number (4)indicate? (Multiple Choice) a) All positions. b) Flat and horizontal fillets. c) Flat, horizontal vertical down and overhead. d) Flat only.

The correct answer is c) Flat, horizontal vertical down and overhead.<br /><br />In the electrode designation E4948, the third number (4) indicates the position of the weld. The number 4 represents the following positions:<br /><br />- Flat (F)<br />- Horizontal (H)<br />- Vertical (V)<br />- Downhand (D)<br />- Overhead (O)<br /><br />So, the electrode E4948 can be used for welding in all these positions.