AWS Certified Welding Inspector (CWI) Exam
Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
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1. What is the primary purpose of a Welding Procedure Specification
(WPS)?
A. To guide welders on how to perform a weld consistently
B. To calculate welding costs
C. To inspect completed welds only
D. To replace the need for welders
Answer: A
Rationale: A WPS provides detailed instructions to ensure welds are
made consistently and meet code requirements.
2. Which organization publishes the D1.1 Structural Welding Code?
A. ASME
B. AWS
,C. ISO
D. API
Answer: B
Rationale: AWS (American Welding Society) publishes D1.1 for
structural steel welding.
3. What does NDT stand for?
A. Non-Destructive Testing
B. New Design Technology
C. Normal Duty Testing
D. Nuclear Defect Tracking
Answer: A
Rationale: NDT refers to testing methods that do not damage the
material.
4. Which defect is a linear discontinuity on the weld surface?
A. Porosity
B. Slag inclusion
C. Crack
D. Undercut
,Answer: C
Rationale: Cracks are linear discontinuities and are the most critical
weld defect.
5. What is the function of a welding electrode coating?
A. Increase arc stability and protect molten weld metal
B. Reduce weld strength
C. Cool the weld instantly
D. Increase corrosion in welds
Answer: A
Rationale: The coating stabilizes the arc and protects the weld from
contamination.
6. Which welding process uses a continuously fed wire electrode and
shielding gas?
A. SMAW
B. GMAW
C. Oxy-fuel welding
D. SAW only
, Answer: B
Rationale: GMAW (MIG) uses wire feed and shielding gas.
7. What does porosity in a weld indicate?
A. Gas trapped in solidifying weld metal
B. Excess penetration
C. Crack formation
D. Overheating of base metal
Answer: A
Rationale: Porosity results from trapped gas during solidification.
8. Which tool is used to measure weld size?
A. Caliper
B. Fillet weld gauge
C. Micrometer only
D. Thermometer
Answer: B
Rationale: Fillet weld gauges are used to measure weld throat and leg
size.
Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of a Welding Procedure Specification
(WPS)?
A. To guide welders on how to perform a weld consistently
B. To calculate welding costs
C. To inspect completed welds only
D. To replace the need for welders
Answer: A
Rationale: A WPS provides detailed instructions to ensure welds are
made consistently and meet code requirements.
2. Which organization publishes the D1.1 Structural Welding Code?
A. ASME
B. AWS
,C. ISO
D. API
Answer: B
Rationale: AWS (American Welding Society) publishes D1.1 for
structural steel welding.
3. What does NDT stand for?
A. Non-Destructive Testing
B. New Design Technology
C. Normal Duty Testing
D. Nuclear Defect Tracking
Answer: A
Rationale: NDT refers to testing methods that do not damage the
material.
4. Which defect is a linear discontinuity on the weld surface?
A. Porosity
B. Slag inclusion
C. Crack
D. Undercut
,Answer: C
Rationale: Cracks are linear discontinuities and are the most critical
weld defect.
5. What is the function of a welding electrode coating?
A. Increase arc stability and protect molten weld metal
B. Reduce weld strength
C. Cool the weld instantly
D. Increase corrosion in welds
Answer: A
Rationale: The coating stabilizes the arc and protects the weld from
contamination.
6. Which welding process uses a continuously fed wire electrode and
shielding gas?
A. SMAW
B. GMAW
C. Oxy-fuel welding
D. SAW only
, Answer: B
Rationale: GMAW (MIG) uses wire feed and shielding gas.
7. What does porosity in a weld indicate?
A. Gas trapped in solidifying weld metal
B. Excess penetration
C. Crack formation
D. Overheating of base metal
Answer: A
Rationale: Porosity results from trapped gas during solidification.
8. Which tool is used to measure weld size?
A. Caliper
B. Fillet weld gauge
C. Micrometer only
D. Thermometer
Answer: B
Rationale: Fillet weld gauges are used to measure weld throat and leg
size.
