AWS CERTIFIED WELDING INSPECTOR
(CWI) PRACTICE EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
| INSTANT DOWNLOAD PDF
1. The primary purpose of a welding procedure specification (WPS) is to:
A. Define the welder’s certification requirements
B. Provide manufacturing tolerances
C. Provide welding instructions to achieve required weld properties
D. Document nondestructive test results
Rationale: The WPS outlines welding parameters and methods needed to
produce welds that meet code and qualification requirements.
2. A welder performance qualification (WPQ) verifies that a welder can:
A. Write a WPS
B. Produce sound welds according to specified requirements
C. Design joints
D. Perform destructive testing
Rationale: WPQ demonstrates the welder’s ability to make acceptable welds per
code.
3. The AWS D1.1 standard applies to:
,A. Pipe welding
B. Pressure vessels
C. Structural steel welding
D. Aluminum shipbuilding
Rationale: D1.1 is the AWS Structural Welding Code for steel.
4. Which NDT method uses high-frequency sound waves?
A. Radiography
B. Ultrasonic testing
C. Magnetic particle
D. Liquid penetrant
Rationale: Ultrasonic testing uses sound waves to detect internal flaws.
5. The thickness of a base metal affects:
A. Weld symbol placement only
B. Heat input and preheat requirements
C. Electrode size alone
D. Joint design only
Rationale: Thicker materials often require more heat input and preheat to avoid
cracking.
6. Excessive welding heat input can cause:
A. Decreased distortion
B. Grain growth in the heat-affected zone
C. Higher residual compressive stress
D. Improved toughness
Rationale: High heat can coarsen microstructure and reduce toughness.
, 7. A root opening (gap) in a groove weld affects:
A. Only visual appearance
B. Weld penetration and fit-up
C. Welding position
D. Code valuation
Rationale: Proper root opening ensures adequate penetration and sound weld.
8. The primary gas used in GTAW (TIG) of stainless steel is:
A. Oxygen
B. Carbon dioxide
C. Argon
D. Nitrogen
Rationale: Argon provides inert shielding to prevent oxidation.
9. Welding symbols on prints communicate:
A. Material type only
B. Joint type, size, and finish requirements
C. Non-weld details only
D. Paper size
Rationale: Symbols indicate specific weld characteristics designers require.
10. A fillet weld size is typically specified by:
A. Length only
B. Angle only
C. Leg size
D. Weld number
(CWI) PRACTICE EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
| INSTANT DOWNLOAD PDF
1. The primary purpose of a welding procedure specification (WPS) is to:
A. Define the welder’s certification requirements
B. Provide manufacturing tolerances
C. Provide welding instructions to achieve required weld properties
D. Document nondestructive test results
Rationale: The WPS outlines welding parameters and methods needed to
produce welds that meet code and qualification requirements.
2. A welder performance qualification (WPQ) verifies that a welder can:
A. Write a WPS
B. Produce sound welds according to specified requirements
C. Design joints
D. Perform destructive testing
Rationale: WPQ demonstrates the welder’s ability to make acceptable welds per
code.
3. The AWS D1.1 standard applies to:
,A. Pipe welding
B. Pressure vessels
C. Structural steel welding
D. Aluminum shipbuilding
Rationale: D1.1 is the AWS Structural Welding Code for steel.
4. Which NDT method uses high-frequency sound waves?
A. Radiography
B. Ultrasonic testing
C. Magnetic particle
D. Liquid penetrant
Rationale: Ultrasonic testing uses sound waves to detect internal flaws.
5. The thickness of a base metal affects:
A. Weld symbol placement only
B. Heat input and preheat requirements
C. Electrode size alone
D. Joint design only
Rationale: Thicker materials often require more heat input and preheat to avoid
cracking.
6. Excessive welding heat input can cause:
A. Decreased distortion
B. Grain growth in the heat-affected zone
C. Higher residual compressive stress
D. Improved toughness
Rationale: High heat can coarsen microstructure and reduce toughness.
, 7. A root opening (gap) in a groove weld affects:
A. Only visual appearance
B. Weld penetration and fit-up
C. Welding position
D. Code valuation
Rationale: Proper root opening ensures adequate penetration and sound weld.
8. The primary gas used in GTAW (TIG) of stainless steel is:
A. Oxygen
B. Carbon dioxide
C. Argon
D. Nitrogen
Rationale: Argon provides inert shielding to prevent oxidation.
9. Welding symbols on prints communicate:
A. Material type only
B. Joint type, size, and finish requirements
C. Non-weld details only
D. Paper size
Rationale: Symbols indicate specific weld characteristics designers require.
10. A fillet weld size is typically specified by:
A. Length only
B. Angle only
C. Leg size
D. Weld number
