CWB WELDING INSPECTOR LEVEL 3 EXAM WITH RATIONALES VERIFIED
WITH CORRECT ANSWERS 2026/2027 UPDATES
1. The primary purpose of welding inspection is to:
A. Increase welding speed
B. Verify that work meets specified requirements
C. Replace the welder
D. Reduce material thickness
Correct Answer: B. Verify that work meets specified requirements
Rationale: Inspection confirms compliance with drawings, specifications, codes, and quality
requirements.
2. A WPS primarily provides:
A. The welder's salary
B. Welding variables and instructions for producing an acceptable weld
C. The inspection schedule only
D. The material purchase order
Correct Answer: B. Welding variables and instructions for producing an acceptable weld
Rationale: A WPS establishes the approved parameters and conditions for welding.
3. A PQR records:
A. The results of a procedure qualification test
B. The welder's attendance
C. The inspection company's finances
D. The welding consumable inventory only
Correct Answer: A. The results of a procedure qualification test
Rationale: A PQR documents actual variables used and test results demonstrating procedure
qualification.
4. A welder qualification test primarily demonstrates:
A. The welder can produce sound welds within a qualified range
B. The welder can write a WPS
C. The welder can design a building
D. The welder can perform radiography
,Correct Answer: A. The welder can produce sound welds within a qualified range
Rationale: Qualification evaluates the welder's ability to produce acceptable welds under
specified conditions.
5. Which document normally contains joint design and weld size?
A. Drawing
B. Payroll record
C. Safety poster only
D. Purchase receipt
Correct Answer: A. Drawing
Rationale: Engineering drawings provide essential fabrication and welding requirements.
6. A welding symbol is used to:
A. Identify the required weld type and location
B. Identify the inspector's age
C. Replace all written specifications
D. Measure hardness
Correct Answer: A. Identify the required weld type and location
Rationale: Standardized symbols communicate welding requirements on drawings.
7. The root of a weld is:
A. The exposed cap surface
B. The area at the deepest part of the joint
C. The heat-affected zone only
D. The electrode coating
Correct Answer: B. The area at the deepest part of the joint
Rationale: The root is the portion of the joint farthest from the weld face.
8. The face of a weld is:
A. The surface exposed on the side from which welding was performed
B. The internal fusion boundary
C. The back of the base metal
D. The root opening
Correct Answer: A. The surface exposed on the side from which welding was performed
Rationale: The weld face is the visible external surface of the weld.
9. The heat-affected zone (HAZ) is:
, A. Metal melted completely into the weld pool
B. Base metal whose properties were changed by heat but which did not melt
C. The electrode coating
D. The weld reinforcement only
Correct Answer: B. Base metal whose properties were changed by heat but which did not melt
Rationale: The HAZ experiences thermal effects without being melted.
10. Weld reinforcement is:
A. Weld metal extending beyond the surface of the base metal
B. A crack in the weld
C. The root opening
D. The backing gas
Correct Answer: A. Weld metal extending beyond the surface of the base metal
Rationale: Reinforcement is the excess weld metal above the original surface.
11. Undercut is:
A. A groove melted into the base metal adjacent to the weld and left unfilled
B. Excessive weld penetration
C. A type of electrode
D. A welding position
Correct Answer: A. A groove melted into the base metal adjacent to the weld and left unfilled
Rationale: Undercut reduces the effective cross-section and may act as a stress concentration.
12. Overlap occurs when:
A. Weld metal extends beyond the toe or root without fusion
B. The weld is too narrow
C. The electrode is too short
D. The base metal is perfectly fused
Correct Answer: A. Weld metal extends beyond the toe or root without fusion
Rationale: Overlap is an unfused projection of weld metal beyond the weld toe or root.
13. Lack of fusion means:
A. Failure of weld metal to fuse with base metal or previous weld metal
B. Excessive reinforcement
C. Excessive gas flow
D. Correct welding technique
WITH CORRECT ANSWERS 2026/2027 UPDATES
1. The primary purpose of welding inspection is to:
A. Increase welding speed
B. Verify that work meets specified requirements
C. Replace the welder
D. Reduce material thickness
Correct Answer: B. Verify that work meets specified requirements
Rationale: Inspection confirms compliance with drawings, specifications, codes, and quality
requirements.
2. A WPS primarily provides:
A. The welder's salary
B. Welding variables and instructions for producing an acceptable weld
C. The inspection schedule only
D. The material purchase order
Correct Answer: B. Welding variables and instructions for producing an acceptable weld
Rationale: A WPS establishes the approved parameters and conditions for welding.
3. A PQR records:
A. The results of a procedure qualification test
B. The welder's attendance
C. The inspection company's finances
D. The welding consumable inventory only
Correct Answer: A. The results of a procedure qualification test
Rationale: A PQR documents actual variables used and test results demonstrating procedure
qualification.
4. A welder qualification test primarily demonstrates:
A. The welder can produce sound welds within a qualified range
B. The welder can write a WPS
C. The welder can design a building
D. The welder can perform radiography
,Correct Answer: A. The welder can produce sound welds within a qualified range
Rationale: Qualification evaluates the welder's ability to produce acceptable welds under
specified conditions.
5. Which document normally contains joint design and weld size?
A. Drawing
B. Payroll record
C. Safety poster only
D. Purchase receipt
Correct Answer: A. Drawing
Rationale: Engineering drawings provide essential fabrication and welding requirements.
6. A welding symbol is used to:
A. Identify the required weld type and location
B. Identify the inspector's age
C. Replace all written specifications
D. Measure hardness
Correct Answer: A. Identify the required weld type and location
Rationale: Standardized symbols communicate welding requirements on drawings.
7. The root of a weld is:
A. The exposed cap surface
B. The area at the deepest part of the joint
C. The heat-affected zone only
D. The electrode coating
Correct Answer: B. The area at the deepest part of the joint
Rationale: The root is the portion of the joint farthest from the weld face.
8. The face of a weld is:
A. The surface exposed on the side from which welding was performed
B. The internal fusion boundary
C. The back of the base metal
D. The root opening
Correct Answer: A. The surface exposed on the side from which welding was performed
Rationale: The weld face is the visible external surface of the weld.
9. The heat-affected zone (HAZ) is:
, A. Metal melted completely into the weld pool
B. Base metal whose properties were changed by heat but which did not melt
C. The electrode coating
D. The weld reinforcement only
Correct Answer: B. Base metal whose properties were changed by heat but which did not melt
Rationale: The HAZ experiences thermal effects without being melted.
10. Weld reinforcement is:
A. Weld metal extending beyond the surface of the base metal
B. A crack in the weld
C. The root opening
D. The backing gas
Correct Answer: A. Weld metal extending beyond the surface of the base metal
Rationale: Reinforcement is the excess weld metal above the original surface.
11. Undercut is:
A. A groove melted into the base metal adjacent to the weld and left unfilled
B. Excessive weld penetration
C. A type of electrode
D. A welding position
Correct Answer: A. A groove melted into the base metal adjacent to the weld and left unfilled
Rationale: Undercut reduces the effective cross-section and may act as a stress concentration.
12. Overlap occurs when:
A. Weld metal extends beyond the toe or root without fusion
B. The weld is too narrow
C. The electrode is too short
D. The base metal is perfectly fused
Correct Answer: A. Weld metal extends beyond the toe or root without fusion
Rationale: Overlap is an unfused projection of weld metal beyond the weld toe or root.
13. Lack of fusion means:
A. Failure of weld metal to fuse with base metal or previous weld metal
B. Excessive reinforcement
C. Excessive gas flow
D. Correct welding technique
