AWS Senior Certified Welding Inspector (SCWI)
Certification Exam Newest (2026 Update)
Actual Practice Questions – Set 100 Most
Common Exam Frequently Tested Questions
And Answers In Details 100% Verified Exam
Highly Recommendable For Grade A+
1. A Welding Procedure Specification (WPS) must be qualified by a Procedure
Qualification Record (PQR) when required by which standard?
A. AWS D1.1 Structural Welding Code – Steel
B. ASME Section IX
C. API 1104
D. All of the above
✔ Correct Answer: D. All of the above
Explanation: All listed codes require WPS qualification by supporting PQRs
under specified conditions to ensure weld procedure reliability and
compliance.
2. What is the primary purpose of a PQR?
A. Train welders
B. Record essential variables and test results
C. Replace WPS
D. Approve inspectors
✔ Correct Answer: B. Record essential variables and test results
Explanation: A PQR documents actual welding parameters and test
outcomes used to qualify a WPS.
3. Which discontinuity is most likely caused by hydrogen?
A. Slag inclusion
, B. Porosity
C. Cold cracking
D. Undercut
✔ Correct Answer: C. Cold cracking
Explanation: Hydrogen-induced cold cracking occurs due to diffusible
hydrogen and residual stress.
4. Visual inspection should be performed:
A. After welding only
B. Before, during, and after welding
C. During welding only
D. Before welding only
✔ Correct Answer: B. Before, during, and after welding
Explanation: Comprehensive inspection ensures quality control throughout
all welding stages.
5. Which NDT method detects surface-breaking cracks best?
A. Ultrasonic Testing
B. Radiographic Testing
C. Magnetic Particle Testing
D. Eddy Current Testing
✔ Correct Answer: C. Magnetic Particle Testing
Explanation: MT is highly effective for detecting surface and near-surface
discontinuities in ferromagnetic materials.
6. What does preheat primarily reduce?
A. Weld size
B. Residual stress and cracking
C. Welding speed
D. Penetration
✔ Correct Answer: B. Residual stress and cracking
Explanation: Preheating slows cooling rates and reduces hydrogen-induced
cracking risk.
, 7. Which welding process uses a non-consumable electrode?
A. SMAW
B. GMAW
C. GTAW
D. FCAW
✔ Correct Answer: C. GTAW
Explanation: Gas Tungsten Arc Welding uses a tungsten electrode that does
not melt.
8. What is undercut?
A. Excess weld metal
B. Groove melted into base metal
C. Internal crack
D. Gas pocket
✔ Correct Answer: B. Groove melted into base metal
Explanation: Undercut is a groove left at the toe of the weld due to
improper technique.
9. Which document defines acceptance criteria?
A. WPS
B. PQR
C. Code/Standard
D. Welder log
✔ Correct Answer: C. Code/Standard
Explanation: Codes specify allowable limits for discontinuities and weld
quality.
10.A convex weld profile may indicate:
A. Too high heat input
B. Low deposition
C. Excess weld metal
D. Lack of fusion
✔ Correct Answer: C. Excess weld metal
Explanation: Convexity typically results from excessive filler deposition.
Certification Exam Newest (2026 Update)
Actual Practice Questions – Set 100 Most
Common Exam Frequently Tested Questions
And Answers In Details 100% Verified Exam
Highly Recommendable For Grade A+
1. A Welding Procedure Specification (WPS) must be qualified by a Procedure
Qualification Record (PQR) when required by which standard?
A. AWS D1.1 Structural Welding Code – Steel
B. ASME Section IX
C. API 1104
D. All of the above
✔ Correct Answer: D. All of the above
Explanation: All listed codes require WPS qualification by supporting PQRs
under specified conditions to ensure weld procedure reliability and
compliance.
2. What is the primary purpose of a PQR?
A. Train welders
B. Record essential variables and test results
C. Replace WPS
D. Approve inspectors
✔ Correct Answer: B. Record essential variables and test results
Explanation: A PQR documents actual welding parameters and test
outcomes used to qualify a WPS.
3. Which discontinuity is most likely caused by hydrogen?
A. Slag inclusion
, B. Porosity
C. Cold cracking
D. Undercut
✔ Correct Answer: C. Cold cracking
Explanation: Hydrogen-induced cold cracking occurs due to diffusible
hydrogen and residual stress.
4. Visual inspection should be performed:
A. After welding only
B. Before, during, and after welding
C. During welding only
D. Before welding only
✔ Correct Answer: B. Before, during, and after welding
Explanation: Comprehensive inspection ensures quality control throughout
all welding stages.
5. Which NDT method detects surface-breaking cracks best?
A. Ultrasonic Testing
B. Radiographic Testing
C. Magnetic Particle Testing
D. Eddy Current Testing
✔ Correct Answer: C. Magnetic Particle Testing
Explanation: MT is highly effective for detecting surface and near-surface
discontinuities in ferromagnetic materials.
6. What does preheat primarily reduce?
A. Weld size
B. Residual stress and cracking
C. Welding speed
D. Penetration
✔ Correct Answer: B. Residual stress and cracking
Explanation: Preheating slows cooling rates and reduces hydrogen-induced
cracking risk.
, 7. Which welding process uses a non-consumable electrode?
A. SMAW
B. GMAW
C. GTAW
D. FCAW
✔ Correct Answer: C. GTAW
Explanation: Gas Tungsten Arc Welding uses a tungsten electrode that does
not melt.
8. What is undercut?
A. Excess weld metal
B. Groove melted into base metal
C. Internal crack
D. Gas pocket
✔ Correct Answer: B. Groove melted into base metal
Explanation: Undercut is a groove left at the toe of the weld due to
improper technique.
9. Which document defines acceptance criteria?
A. WPS
B. PQR
C. Code/Standard
D. Welder log
✔ Correct Answer: C. Code/Standard
Explanation: Codes specify allowable limits for discontinuities and weld
quality.
10.A convex weld profile may indicate:
A. Too high heat input
B. Low deposition
C. Excess weld metal
D. Lack of fusion
✔ Correct Answer: C. Excess weld metal
Explanation: Convexity typically results from excessive filler deposition.
