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CWB Level 1 Practice Exam
1. What is the primary purpose of a welding helmet?
A. Reduce noise
B. Protect eyes and face from UV, IR, and sparks
C. Protect the lungs
D. Hold the electrodes
Answer: B
Rationale: Welding helmets shield the face and eyes from ultraviolet and infrared radiation,
flying sparks, and molten metal.
2. Which PPE is essential when welding?
A. Gloves, helmet, apron, safety boots
B. Gloves and helmet only
C. Safety boots only
D. Hearing protection only
Answer: A
Rationale: Complete PPE prevents burns, UV/IR eye damage, and exposure to molten metal and
sparks.
3. SMAW welding uses:
A. Non-consumable electrode
B. Consumable electrode with flux coating
C. Shielding gas only
D. Water cooling
Answer: B
Rationale: Shielded Metal Arc Welding (SMAW) uses a consumable electrode coated in flux to
create the weld.
practice exam 2026
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4. GTAW (TIG) welding uses:
A. Consumable flux-coated electrode
B. Non-consumable tungsten electrode with inert gas
C. Shielded flux wire
D. Oxy-acetylene flame only
Answer: B
Rationale: GTAW uses a non-consumable tungsten electrode and inert gas to protect the weld
pool.
5. What is the function of a ground clamp?
A. Supply electricity
B. Complete the welding circuit
C. Hold the electrode
D. Shield the arc
Answer: B
Rationale: The ground clamp ensures current flows through the workpiece, completing the
electrical circuit.
6. A “V-groove” weld joint is used to:
A. Join thin sheets only
B. Allow full penetration in thick material
C. Make fillet welds
D. Join circular pipes only
Answer: B
Rationale: V-groove joints provide complete penetration for thick materials.
7. In welding symbols, a filled triangle indicates:
A. Fillet weld
B. Groove weld
C. Plug weld
D. Spot weld
Answer: A
Rationale: Fillet welds are represented by a filled triangle on the reference line.
practice exam 2026
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8. Which gas is commonly used in MIG welding steel?
A. Argon
B. CO₂ or Argon/CO₂ mixture
C. Oxygen
D. Nitrogen
Answer: B
Rationale: CO₂ or Argon/CO₂ mixtures shield steel welds in GMAW.
9. What is the purpose of preheating metal?
A. Reduce weld penetration
B. Reduce cracking risk in high-carbon steels
C. Increase electrode consumption
D. Harden the metal
Answer: B
Rationale: Preheating prevents thermal shock and reduces cracking risk.
10. Slag in SMAW welding is:
A. Shielding gas
B. Flux residue
C. Filler metal
D. Electrode tip
Answer: B
Rationale: Flux melts to form slag, protecting the weld as it cools; slag must be removed.
11. Which welding process is best for thin aluminum sheets?
A. SMAW
B. GTAW (TIG)
C. FCAW
D. Oxy-acetylene
Answer: B
Rationale: GTAW offers precise heat control, ideal for thin aluminum.
practice exam 2026
CWB Level 1 Practice Exam
1. What is the primary purpose of a welding helmet?
A. Reduce noise
B. Protect eyes and face from UV, IR, and sparks
C. Protect the lungs
D. Hold the electrodes
Answer: B
Rationale: Welding helmets shield the face and eyes from ultraviolet and infrared radiation,
flying sparks, and molten metal.
2. Which PPE is essential when welding?
A. Gloves, helmet, apron, safety boots
B. Gloves and helmet only
C. Safety boots only
D. Hearing protection only
Answer: A
Rationale: Complete PPE prevents burns, UV/IR eye damage, and exposure to molten metal and
sparks.
3. SMAW welding uses:
A. Non-consumable electrode
B. Consumable electrode with flux coating
C. Shielding gas only
D. Water cooling
Answer: B
Rationale: Shielded Metal Arc Welding (SMAW) uses a consumable electrode coated in flux to
create the weld.
practice exam 2026
,2|Page
4. GTAW (TIG) welding uses:
A. Consumable flux-coated electrode
B. Non-consumable tungsten electrode with inert gas
C. Shielded flux wire
D. Oxy-acetylene flame only
Answer: B
Rationale: GTAW uses a non-consumable tungsten electrode and inert gas to protect the weld
pool.
5. What is the function of a ground clamp?
A. Supply electricity
B. Complete the welding circuit
C. Hold the electrode
D. Shield the arc
Answer: B
Rationale: The ground clamp ensures current flows through the workpiece, completing the
electrical circuit.
6. A “V-groove” weld joint is used to:
A. Join thin sheets only
B. Allow full penetration in thick material
C. Make fillet welds
D. Join circular pipes only
Answer: B
Rationale: V-groove joints provide complete penetration for thick materials.
7. In welding symbols, a filled triangle indicates:
A. Fillet weld
B. Groove weld
C. Plug weld
D. Spot weld
Answer: A
Rationale: Fillet welds are represented by a filled triangle on the reference line.
practice exam 2026
, 3|Page
8. Which gas is commonly used in MIG welding steel?
A. Argon
B. CO₂ or Argon/CO₂ mixture
C. Oxygen
D. Nitrogen
Answer: B
Rationale: CO₂ or Argon/CO₂ mixtures shield steel welds in GMAW.
9. What is the purpose of preheating metal?
A. Reduce weld penetration
B. Reduce cracking risk in high-carbon steels
C. Increase electrode consumption
D. Harden the metal
Answer: B
Rationale: Preheating prevents thermal shock and reduces cracking risk.
10. Slag in SMAW welding is:
A. Shielding gas
B. Flux residue
C. Filler metal
D. Electrode tip
Answer: B
Rationale: Flux melts to form slag, protecting the weld as it cools; slag must be removed.
11. Which welding process is best for thin aluminum sheets?
A. SMAW
B. GTAW (TIG)
C. FCAW
D. Oxy-acetylene
Answer: B
Rationale: GTAW offers precise heat control, ideal for thin aluminum.
practice exam 2026
