CWB 2 VISUAL WELD INSPECTOR EXAM
QUESTIONS AND ANSWERS PRACTICE QUESTIONS
WITH SOLUTIONS NEWEST | ALREADY GRADED A+
1. What is the primary purpose of visual weld inspection?
A. To increase welding speed
B. To identify surface discontinuities and verify weld quality
C. To reduce filler metal usage
D. To measure electrical resistance
Answer: B. To identify surface discontinuities and verify weld quality
Rationale: Visual inspection is the first and most important quality control method used to
detect visible defects and confirm compliance with welding standards.
2. Which tool is commonly used to measure weld size?
A. Vernier caliper
B. Welding gauge
C. Pipe wrench
D. Micrometer
Answer: B. Welding gauge
Rationale: Welding gauges are specifically designed to measure fillet weld size, reinforcement,
undercut, and other weld dimensions.
3. What is undercut in welding?
A. Excess weld metal on the surface
B. A groove melted into the base metal adjacent to the weld toe
C. A crack inside the weld
D. A type of porosity
Answer: B. A groove melted into the base metal adjacent to the weld toe
Rationale: Undercut weakens the joint by reducing base metal thickness along the weld edge.
, 4. Which discontinuity appears as small gas pockets trapped in the weld metal?
A. Slag inclusion
B. Crack
C. Porosity
D. Overlap
Answer: C. Porosity
Rationale: Porosity forms when gases become trapped during weld solidification.
5. What lighting level is generally recommended for visual weld inspection?
A. Very dim lighting
B. Natural moonlight
C. Adequate bright lighting
D. Colored lighting only
Answer: C. Adequate bright lighting
Rationale: Proper illumination is necessary to accurately identify weld discontinuities and
surface defects.
6. Which defect is considered the most serious in a weld?
A. Spatter
B. Crack
C. Slight reinforcement
D. Minor discoloration
Answer: B. Crack
Rationale: Cracks can propagate under stress and often lead to weld failure.
7. What is the purpose of pre-weld inspection?
A. To increase weld color
B. To verify materials, fit-up, and preparation before welding
C. To polish welds
D. To remove slag
Answer: B. To verify materials, fit-up, and preparation before welding
,Rationale: Pre-weld inspection ensures conditions are suitable for producing acceptable welds.
8. Which welding discontinuity occurs when weld metal flows onto the base metal without
fusion?
A. Overlap
B. Porosity
C. Undercut
D. Lamination
Answer: A. Overlap
Rationale: Overlap is caused by poor welding technique and results in incomplete fusion.
9. What is the purpose of a fillet weld gauge?
A. To measure temperature
B. To inspect electrode size
C. To determine fillet weld leg size and throat
D. To measure gas flow
Answer: C. To determine fillet weld leg size and throat
Rationale: Fillet weld gauges verify weld dimensions against code requirements.
10. What type of crack occurs during weld solidification?
A. Fatigue crack
B. Hot crack
C. Hydrogen crack
D. Toe crack
Answer: B. Hot crack
Rationale: Hot cracks form at high temperatures during solidification due to shrinkage stresses.
11. What does slag inclusion indicate?
A. Excess penetration
B. Nonmetallic material trapped in the weld
, C. Proper shielding gas coverage
D. Good fusion
Answer: B. Nonmetallic material trapped in the weld
Rationale: Slag inclusions occur when slag is not completely removed between weld passes.
12. Which inspection stage occurs after welding is completed?
A. Preheat inspection
B. In-process inspection
C. Post-weld inspection
D. Material inspection
Answer: C. Post-weld inspection
Rationale: Post-weld inspection evaluates completed weld quality and acceptance.
13. What is weld reinforcement?
A. Removal of weld metal
B. Weld metal extending above the base metal surface
C. Lack of fusion
D. Internal cracking
Answer: B. Weld metal extending above the base metal surface
Rationale: Reinforcement is the excess weld metal above the weld face.
14. Which discontinuity is caused by insufficient heat or poor technique?
A. Incomplete fusion
B. Porosity
C. Arc strike
D. Crater crack
Answer: A. Incomplete fusion
Rationale: Incomplete fusion occurs when weld metal fails to fuse with the base metal or
previous weld bead.
QUESTIONS AND ANSWERS PRACTICE QUESTIONS
WITH SOLUTIONS NEWEST | ALREADY GRADED A+
1. What is the primary purpose of visual weld inspection?
A. To increase welding speed
B. To identify surface discontinuities and verify weld quality
C. To reduce filler metal usage
D. To measure electrical resistance
Answer: B. To identify surface discontinuities and verify weld quality
Rationale: Visual inspection is the first and most important quality control method used to
detect visible defects and confirm compliance with welding standards.
2. Which tool is commonly used to measure weld size?
A. Vernier caliper
B. Welding gauge
C. Pipe wrench
D. Micrometer
Answer: B. Welding gauge
Rationale: Welding gauges are specifically designed to measure fillet weld size, reinforcement,
undercut, and other weld dimensions.
3. What is undercut in welding?
A. Excess weld metal on the surface
B. A groove melted into the base metal adjacent to the weld toe
C. A crack inside the weld
D. A type of porosity
Answer: B. A groove melted into the base metal adjacent to the weld toe
Rationale: Undercut weakens the joint by reducing base metal thickness along the weld edge.
, 4. Which discontinuity appears as small gas pockets trapped in the weld metal?
A. Slag inclusion
B. Crack
C. Porosity
D. Overlap
Answer: C. Porosity
Rationale: Porosity forms when gases become trapped during weld solidification.
5. What lighting level is generally recommended for visual weld inspection?
A. Very dim lighting
B. Natural moonlight
C. Adequate bright lighting
D. Colored lighting only
Answer: C. Adequate bright lighting
Rationale: Proper illumination is necessary to accurately identify weld discontinuities and
surface defects.
6. Which defect is considered the most serious in a weld?
A. Spatter
B. Crack
C. Slight reinforcement
D. Minor discoloration
Answer: B. Crack
Rationale: Cracks can propagate under stress and often lead to weld failure.
7. What is the purpose of pre-weld inspection?
A. To increase weld color
B. To verify materials, fit-up, and preparation before welding
C. To polish welds
D. To remove slag
Answer: B. To verify materials, fit-up, and preparation before welding
,Rationale: Pre-weld inspection ensures conditions are suitable for producing acceptable welds.
8. Which welding discontinuity occurs when weld metal flows onto the base metal without
fusion?
A. Overlap
B. Porosity
C. Undercut
D. Lamination
Answer: A. Overlap
Rationale: Overlap is caused by poor welding technique and results in incomplete fusion.
9. What is the purpose of a fillet weld gauge?
A. To measure temperature
B. To inspect electrode size
C. To determine fillet weld leg size and throat
D. To measure gas flow
Answer: C. To determine fillet weld leg size and throat
Rationale: Fillet weld gauges verify weld dimensions against code requirements.
10. What type of crack occurs during weld solidification?
A. Fatigue crack
B. Hot crack
C. Hydrogen crack
D. Toe crack
Answer: B. Hot crack
Rationale: Hot cracks form at high temperatures during solidification due to shrinkage stresses.
11. What does slag inclusion indicate?
A. Excess penetration
B. Nonmetallic material trapped in the weld
, C. Proper shielding gas coverage
D. Good fusion
Answer: B. Nonmetallic material trapped in the weld
Rationale: Slag inclusions occur when slag is not completely removed between weld passes.
12. Which inspection stage occurs after welding is completed?
A. Preheat inspection
B. In-process inspection
C. Post-weld inspection
D. Material inspection
Answer: C. Post-weld inspection
Rationale: Post-weld inspection evaluates completed weld quality and acceptance.
13. What is weld reinforcement?
A. Removal of weld metal
B. Weld metal extending above the base metal surface
C. Lack of fusion
D. Internal cracking
Answer: B. Weld metal extending above the base metal surface
Rationale: Reinforcement is the excess weld metal above the weld face.
14. Which discontinuity is caused by insufficient heat or poor technique?
A. Incomplete fusion
B. Porosity
C. Arc strike
D. Crater crack
Answer: A. Incomplete fusion
Rationale: Incomplete fusion occurs when weld metal fails to fuse with the base metal or
previous weld bead.
