Certified Welder Welding Positions and Joints 2 — Questions and Answers
Question 1: Which welding position is designated as '2F' in AWS terminology?
- Flat fillet weld
- Horizontal fillet weld (Correct answer)
- Vertical fillet weld
- Overhead fillet weld
Correct answer: Horizontal fillet weld
The '2F' designation refers to a horizontal fillet weld, where the weld axis is horizontal and the face is vertical.
Question 2: What is the primary challenge when welding in the 4G (overhead groove) position?
- Insufficient heat penetration
- Molten metal falling due to gravity (Correct answer)
- Excessive weld spatter on the base metal
- Difficulty maintaining arc length
Correct answer: Molten metal falling due to gravity
In the overhead position, gravity pulls molten metal downward away from the joint, making it difficult to maintain a proper weld puddle.
Question 3: A T-joint is formed when two pieces of base metal are joined at approximately what angle?
- 45 degrees
- 60 degrees
- 90 degrees (Correct answer)
- 120 degrees
Correct answer: 90 degrees
A T-joint is created when one piece of metal is perpendicular (90 degrees) to another, resembling the letter 'T'.
Question 4: Which joint type provides the greatest strength for joining two plates end-to-end under tensile loading?
- Lap joint
- T-joint
- Butt joint with full penetration (Correct answer)
- Corner joint
Correct answer: Butt joint with full penetration
A full penetration butt joint provides the highest tensile strength because the weld metal completely fills the joint and is continuous through the full thickness.
Question 5: In the 3G welding position, in which direction is the weld typically progressed?
- Left to right horizontally
- Right to left horizontally
- Uphill or downhill vertically (Correct answer)
- In a circular overhead pattern
Correct answer: Uphill or downhill vertically
The 3G position is a vertical groove weld, and the welder progresses either uphill (3G-up) or downhill (3G-down) along the vertical joint.
Question 6: What type of edge preparation is used for a single-V groove weld?
- Both edges are left square
- One edge is beveled and the other is square
- Both edges are beveled to form a V shape (Correct answer)
- Both edges are curved to form a U shape
Correct answer: Both edges are beveled to form a V shape
A single-V groove is formed by beveling both mating edges so they form a V-shaped groove when placed together for welding.
Question 7: Which AWS position code applies to a pipe weld where the pipe axis is horizontal and the pipe is not rotated during welding?
- 1G
- 2G
- 5G (Correct answer)
- 6G
Correct answer: 5G
The 5G position designates a pipe weld with its axis horizontal and fixed, requiring the welder to weld in all positions around the pipe without rotating it.
