AWS CERTIFIED WELDING INSPECTOR (CWI)
2026–2027 ADVANCED PRACTICE EXAM
200 Original Practice Questions • Answers • Detailed Rationales
Advanced Welding Inspection, Quality Control & Certification Review
Format 200 Multiple-Choice Practice Questions
Includes Correct Answers and Detailed Rationales
Welding Processes, Inspection,
Focus WPS/PQR, Metallurgy, NDT, Codes, and
Quality
Welding Inspectors and Advanced
Audience
Certification Candidates
Edition 2026–2027 Practice Edition
,Contents
• Section 1: Welding Fundamentals and Processes (Questions 1–25)
• Section 2: Welding Symbols, Drawings and Terminology (Questions 26–50)
• Section 3: WPS, PQR and Welder Qualification (Questions 51–75)
• Section 4: Welding Metallurgy, Materials and Heat Treatment (Questions 76–100)
• Section 5: Visual Inspection and Weld Discontinuities (Questions 101–125)
• Section 6: Non-Destructive Testing and Examination (Questions 126–150)
• Section 7: Codes, Quality Assurance and Safety (Questions 151–175)
• Section 8: Integrated CWI Scenario-Based Review (Questions 176–200)
,Section 1: Welding Fundamentals and Processes
25 original practice questions focused on technical knowledge, inspection judgment, and
practical certification preparation.
1. What is the primary purpose of shielding gas in gas-shielded arc welding?
• To protect the molten weld pool from atmospheric contamination
• To increase base-metal thickness
• To eliminate all distortion
• To replace filler metal
Answer: To protect the molten weld pool from atmospheric contamination
Rationale: Shielding gas displaces atmospheric gases that can contaminate the molten
weld pool and adversely affect weld quality.
2. In SMAW, the electrode coating primarily helps to:
• Provide shielding and form slag while contributing other functions
• Cool the welder's gloves
• Measure weld size
• Replace the base metal
Answer: Provide shielding and form slag while contributing other functions
Rationale: The coating can produce shielding gases and slag and may add alloying
elements or deoxidizers.
3. Which welding process uses a continuously fed consumable wire electrode?
• GMAW
• SMAW
• GTAW with nonconsumable electrode
• Oxyfuel cutting
Answer: GMAW
Rationale: Gas metal arc welding uses a continuously fed consumable wire electrode
with shielding gas.
4. GTAW is distinguished by use of:
, • A nonconsumable tungsten electrode
• A consumable stick electrode only
• A flux-coated wire only
• A plasma torch without an arc
Answer: A nonconsumable tungsten electrode
Rationale: GTAW uses a nonconsumable tungsten electrode and may use separate filler
metal.
5. Excessive welding current can contribute to:
• Excessive penetration, undercut, or burn-through depending on joint conditions
• Guaranteed lack of fusion
• No heat input
• Elimination of distortion
Answer: Excessive penetration, undercut, or burn-through depending on joint conditions
Rationale: High current increases heat input and may produce excessive penetration or
melting if not controlled.
6. Travel speed that is too fast may contribute to:
• Insufficient fusion or undersized welds
• Guaranteed full penetration
• Elimination of porosity
• Increased weld size in every case
Answer: Insufficient fusion or undersized welds
Rationale: Excessive travel speed can reduce deposited metal and heat available for
adequate fusion.
7. A welding arc is best described as:
• An electrical discharge that generates heat for melting
• A mechanical cutting blade
• A chemical cleaning process only
• A type of inspection report
2026–2027 ADVANCED PRACTICE EXAM
200 Original Practice Questions • Answers • Detailed Rationales
Advanced Welding Inspection, Quality Control & Certification Review
Format 200 Multiple-Choice Practice Questions
Includes Correct Answers and Detailed Rationales
Welding Processes, Inspection,
Focus WPS/PQR, Metallurgy, NDT, Codes, and
Quality
Welding Inspectors and Advanced
Audience
Certification Candidates
Edition 2026–2027 Practice Edition
,Contents
• Section 1: Welding Fundamentals and Processes (Questions 1–25)
• Section 2: Welding Symbols, Drawings and Terminology (Questions 26–50)
• Section 3: WPS, PQR and Welder Qualification (Questions 51–75)
• Section 4: Welding Metallurgy, Materials and Heat Treatment (Questions 76–100)
• Section 5: Visual Inspection and Weld Discontinuities (Questions 101–125)
• Section 6: Non-Destructive Testing and Examination (Questions 126–150)
• Section 7: Codes, Quality Assurance and Safety (Questions 151–175)
• Section 8: Integrated CWI Scenario-Based Review (Questions 176–200)
,Section 1: Welding Fundamentals and Processes
25 original practice questions focused on technical knowledge, inspection judgment, and
practical certification preparation.
1. What is the primary purpose of shielding gas in gas-shielded arc welding?
• To protect the molten weld pool from atmospheric contamination
• To increase base-metal thickness
• To eliminate all distortion
• To replace filler metal
Answer: To protect the molten weld pool from atmospheric contamination
Rationale: Shielding gas displaces atmospheric gases that can contaminate the molten
weld pool and adversely affect weld quality.
2. In SMAW, the electrode coating primarily helps to:
• Provide shielding and form slag while contributing other functions
• Cool the welder's gloves
• Measure weld size
• Replace the base metal
Answer: Provide shielding and form slag while contributing other functions
Rationale: The coating can produce shielding gases and slag and may add alloying
elements or deoxidizers.
3. Which welding process uses a continuously fed consumable wire electrode?
• GMAW
• SMAW
• GTAW with nonconsumable electrode
• Oxyfuel cutting
Answer: GMAW
Rationale: Gas metal arc welding uses a continuously fed consumable wire electrode
with shielding gas.
4. GTAW is distinguished by use of:
, • A nonconsumable tungsten electrode
• A consumable stick electrode only
• A flux-coated wire only
• A plasma torch without an arc
Answer: A nonconsumable tungsten electrode
Rationale: GTAW uses a nonconsumable tungsten electrode and may use separate filler
metal.
5. Excessive welding current can contribute to:
• Excessive penetration, undercut, or burn-through depending on joint conditions
• Guaranteed lack of fusion
• No heat input
• Elimination of distortion
Answer: Excessive penetration, undercut, or burn-through depending on joint conditions
Rationale: High current increases heat input and may produce excessive penetration or
melting if not controlled.
6. Travel speed that is too fast may contribute to:
• Insufficient fusion or undersized welds
• Guaranteed full penetration
• Elimination of porosity
• Increased weld size in every case
Answer: Insufficient fusion or undersized welds
Rationale: Excessive travel speed can reduce deposited metal and heat available for
adequate fusion.
7. A welding arc is best described as:
• An electrical discharge that generates heat for melting
• A mechanical cutting blade
• A chemical cleaning process only
• A type of inspection report
