Structural Welding Certification Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. In structural welding, the primary purpose of a welding procedure
specification (WPS) is to:
A. Record only the welder’s personal experience history
B. Define the approved variables and requirements for producing a
weld
C. Replace the need for welding inspection
D. Eliminate the need for welder qualification testing
B. Define the approved variables and requirements for producing a weld
A WPS establishes essential welding variables, techniques, materials, and
acceptance requirements necessary to consistently produce sound welds
according to applicable codes.
2. Which welding process is most commonly used for structural steel
fabrication because of its versatility and portability?
A. Gas tungsten arc welding (GTAW)
B. Shielded metal arc welding (SMAW)
C. Submerged arc welding (SAW)
D. Plasma arc welding (PAW)
,SMAW is widely used in structural steel because equipment is portable,
electrodes are available in many classifications, and the process works well
in field conditions.
3. A welder qualification test primarily demonstrates that the welder
can:
A. Design steel structures
B. Write welding procedures
C. Produce acceptable welds using specified variables
D. Perform only visual inspections
C. Produce acceptable welds using specified variables
Welder qualification verifies the individual’s ability to deposit weld metal
meeting code requirements under defined conditions.
4. In structural welding, a fillet weld is primarily identified by its:
A. Circular cross section
B. Triangular cross-sectional shape
C. Square groove preparation
D. Internal reinforcement pattern
A fillet weld has a generally triangular cross section and is commonly used
to join overlapping or perpendicular members.
5. The term “heat-affected zone” (HAZ) refers to:
A. The melted weld metal only
B. The welding electrode coating
C. The base metal area altered by welding heat without melting
D. The area removed during grinding
The HAZ is the region adjacent to the weld where heat changes the
microstructure and properties of the base material.
6. Excessive welding heat input can result in:
A. Improved dimensional accuracy in all cases
B. Elimination of residual stress
, C. Distortion and undesirable metallurgical changes
D. Reduced need for inspection
High heat input can cause warping, grain changes, residual stresses, and
reduced mechanical performance.
7. The American Welding Society structural welding code commonly
used for steel structures is:
A. AWS D1.1
B. AWS A5.1
C. AWS B2.1
D. AWS QC7
A. AWS D1.1
AWS D1.1 provides requirements for welding structural steel, including
qualification, fabrication, inspection, and acceptance criteria.
8. The main function of shielding gas in gas metal arc welding (GMAW) is
to:
A. Increase electrode hardness
B. Protect molten weld metal from atmospheric contamination
C. Reduce electrical conductivity
D. Prevent all distortion
Shielding gas prevents oxygen, nitrogen, and other contaminants from
reacting with the molten weld pool.
9. A weld discontinuity becomes a weld defect when it:
A. Is visible during welding
B. Occurs in every weld
C. Exceeds allowable acceptance criteria
D. Changes weld color
Codes define acceptable limits for discontinuities; those exceeding limits
are classified as defects requiring correction.
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. In structural welding, the primary purpose of a welding procedure
specification (WPS) is to:
A. Record only the welder’s personal experience history
B. Define the approved variables and requirements for producing a
weld
C. Replace the need for welding inspection
D. Eliminate the need for welder qualification testing
B. Define the approved variables and requirements for producing a weld
A WPS establishes essential welding variables, techniques, materials, and
acceptance requirements necessary to consistently produce sound welds
according to applicable codes.
2. Which welding process is most commonly used for structural steel
fabrication because of its versatility and portability?
A. Gas tungsten arc welding (GTAW)
B. Shielded metal arc welding (SMAW)
C. Submerged arc welding (SAW)
D. Plasma arc welding (PAW)
,SMAW is widely used in structural steel because equipment is portable,
electrodes are available in many classifications, and the process works well
in field conditions.
3. A welder qualification test primarily demonstrates that the welder
can:
A. Design steel structures
B. Write welding procedures
C. Produce acceptable welds using specified variables
D. Perform only visual inspections
C. Produce acceptable welds using specified variables
Welder qualification verifies the individual’s ability to deposit weld metal
meeting code requirements under defined conditions.
4. In structural welding, a fillet weld is primarily identified by its:
A. Circular cross section
B. Triangular cross-sectional shape
C. Square groove preparation
D. Internal reinforcement pattern
A fillet weld has a generally triangular cross section and is commonly used
to join overlapping or perpendicular members.
5. The term “heat-affected zone” (HAZ) refers to:
A. The melted weld metal only
B. The welding electrode coating
C. The base metal area altered by welding heat without melting
D. The area removed during grinding
The HAZ is the region adjacent to the weld where heat changes the
microstructure and properties of the base material.
6. Excessive welding heat input can result in:
A. Improved dimensional accuracy in all cases
B. Elimination of residual stress
, C. Distortion and undesirable metallurgical changes
D. Reduced need for inspection
High heat input can cause warping, grain changes, residual stresses, and
reduced mechanical performance.
7. The American Welding Society structural welding code commonly
used for steel structures is:
A. AWS D1.1
B. AWS A5.1
C. AWS B2.1
D. AWS QC7
A. AWS D1.1
AWS D1.1 provides requirements for welding structural steel, including
qualification, fabrication, inspection, and acceptance criteria.
8. The main function of shielding gas in gas metal arc welding (GMAW) is
to:
A. Increase electrode hardness
B. Protect molten weld metal from atmospheric contamination
C. Reduce electrical conductivity
D. Prevent all distortion
Shielding gas prevents oxygen, nitrogen, and other contaminants from
reacting with the molten weld pool.
9. A weld discontinuity becomes a weld defect when it:
A. Is visible during welding
B. Occurs in every weld
C. Exceeds allowable acceptance criteria
D. Changes weld color
Codes define acceptable limits for discontinuities; those exceeding limits
are classified as defects requiring correction.
