🔍 Key Concepts

• Focus on the shape of the joint preparation on each side of the plate (before welding), not just the deposited metal. • Compare the figure in 5B with the figures in rows 3B and 4B to see how the groove changes from one side to both sides. • Think about which weld names (X, K, double bevel, double J) describe symmetry from both sides and which describe a specific groove profile (straight vs curved).

💭 Think About

• Does the profile of 5B, if you traced the groove from one side to the other, look more like straight lines or curved "hooks"? • If you remove one side of the preparation in 5B, which single‑side weld from column A (3A, 4A, or 5A) does it most closely resemble? • Which of the answer choices would you expect to show bevels from both sides versus a compound curve from both sides?

✅ Before You Answer

• Verify whether 5B is symmetrical about the centerline of the plate. • Check if the groove sides in 5B are straight (bevel) or curved (J‑shaped). • Match 5B to its single‑side counterpart in column A, then apply the idea "single" vs "double" to choose between the options.