AWS Certified Welding Inspector (CWI)
Practice Examination Questions With Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the primary responsibility of a Certified Welding Inspector
(CWI)?
A. Perform welding operations
B. Design welded structures
C. Ensure weld quality meets specified standards
D. Approve project budgets
Answer: C
Rationale: The CWI’s core duty is to verify that welding work complies
with applicable codes, standards, and specifications, ensuring safety
and quality.
2. Which document outlines the acceptance criteria for weld
discontinuities?
A. Welding Procedure Specification (WPS)
, B. Procedure Qualification Record (PQR)
C. Code or standard (e.g., AWS D1.1)
D. Material Test Report (MTR)
Answer: C
Rationale: Codes and standards define allowable limits for
discontinuities and are used as the basis for inspection acceptance.
3. What does WPS stand for?
A. Welding Procedure Sheet
B. Weld Performance Standard
C. Welding Procedure Specification
D. Weld Process Summary
Answer: C
Rationale: A WPS provides detailed instructions for producing welds
that meet code requirements.
4. Which discontinuity is characterized by a sharp groove along the
weld toe?
A. Porosity
B. Undercut
, C. Slag inclusion
D. Crack
Answer: B
Rationale: Undercut is a groove melted into the base metal adjacent
to the weld toe and left unfilled.
5. What is the primary purpose of a PQR?
A. To guide welders
B. To qualify a welding procedure
C. To inspect welds
D. To record welder performance
Answer: B
Rationale: A PQR documents the test results used to qualify a WPS,
proving it produces acceptable welds.
6. Which inspection method uses sound waves to detect internal
flaws?
A. Radiographic Testing
B. Magnetic Particle Testing
, C. Ultrasonic Testing
D. Visual Testing
Answer: C
Rationale: Ultrasonic Testing (UT) uses high-frequency sound waves to
identify internal discontinuities.
7. What type of discontinuity is porosity?
A. Planar
B. Linear
C. Volumetric
D. Surface
Answer: C
Rationale: Porosity consists of gas pockets within the weld, making it
a volumetric discontinuity.
8. Which tool is commonly used to measure weld size?
A. Micrometer
B. Welding gauge
C. Caliper
D. Thermometer
Practice Examination Questions With Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the primary responsibility of a Certified Welding Inspector
(CWI)?
A. Perform welding operations
B. Design welded structures
C. Ensure weld quality meets specified standards
D. Approve project budgets
Answer: C
Rationale: The CWI’s core duty is to verify that welding work complies
with applicable codes, standards, and specifications, ensuring safety
and quality.
2. Which document outlines the acceptance criteria for weld
discontinuities?
A. Welding Procedure Specification (WPS)
, B. Procedure Qualification Record (PQR)
C. Code or standard (e.g., AWS D1.1)
D. Material Test Report (MTR)
Answer: C
Rationale: Codes and standards define allowable limits for
discontinuities and are used as the basis for inspection acceptance.
3. What does WPS stand for?
A. Welding Procedure Sheet
B. Weld Performance Standard
C. Welding Procedure Specification
D. Weld Process Summary
Answer: C
Rationale: A WPS provides detailed instructions for producing welds
that meet code requirements.
4. Which discontinuity is characterized by a sharp groove along the
weld toe?
A. Porosity
B. Undercut
, C. Slag inclusion
D. Crack
Answer: B
Rationale: Undercut is a groove melted into the base metal adjacent
to the weld toe and left unfilled.
5. What is the primary purpose of a PQR?
A. To guide welders
B. To qualify a welding procedure
C. To inspect welds
D. To record welder performance
Answer: B
Rationale: A PQR documents the test results used to qualify a WPS,
proving it produces acceptable welds.
6. Which inspection method uses sound waves to detect internal
flaws?
A. Radiographic Testing
B. Magnetic Particle Testing
, C. Ultrasonic Testing
D. Visual Testing
Answer: C
Rationale: Ultrasonic Testing (UT) uses high-frequency sound waves to
identify internal discontinuities.
7. What type of discontinuity is porosity?
A. Planar
B. Linear
C. Volumetric
D. Surface
Answer: C
Rationale: Porosity consists of gas pockets within the weld, making it
a volumetric discontinuity.
8. Which tool is commonly used to measure weld size?
A. Micrometer
B. Welding gauge
C. Caliper
D. Thermometer
