Question

identify where to place the first pass for this 2g weld.

bead e
bead b
bead c
bead f
bead d
bead a

Explanation:

Identify the weld position and joint configuration

Using the Welding Positions knowledge point, a 2G position refers to a horizontal groove weld. In this orientation, the plates are positioned vertically, and the weld joint runs horizontally. Gravity pulls the molten weld pool downward toward the lower edge of the joint.

Determine the multi-pass sequence

Using the Multi-pass Welding knowledge point, multi-pass welding requires a specific sequence of weld beads to fill the groove. The first pass is the root pass, which penetrates the back of the joint to fuse the two plates together. Looking at the cross-section diagram:

• Bead A is located at the root of the joint (the narrowest opening on the left side).
• Beads B, E, C, F, and D are subsequent fill and cap passes deposited to fill the groove.

Select the first pass bead

The first pass must always be placed at the root of the joint to establish proper penetration and fusion. Therefore, Bead A is the first pass (root pass) for this 2G weld.

Answer:

• Bead E
• Bead B
• Bead C
• Bead F
• Bead D
• Bead A (Correct answer)