CWB Level 2 Exam
Questions & Answers | 2025 Complete Study Set
Canadian Welding Bureau Level 2 Certification
Comprehensive Practice Review
50 Questions | 2026/2027 Aligned | A+ Graded Real Exam
Canadian Welding Bureau (CWB)
CSA W47.1 | CSA W59 | CSA W178.2
Generated: May 28, 2026
, CWB Level 2 Exam | 2025 Complete Study Set | Canadian Welding Bureau
Table of Contents
Section 1 Welding Processes, Equipment & Parameters (Q1–Q10)
Section 2 Welding Symbols, Blueprint Reading & Joint Design (Q11–Q20)
Section 3 Welding Metallurgy, Materials & Heat Treatment (Q21–Q30)
Section 4 Weld Discontinuities, Inspection Methods & NDT Basics (Q31–Q40)
Section 5 Welding Procedures, Qualifications & Code Compliance (Q41–Q50)
Appendix Answer Key Quick Reference
Page 2
, CWB Level 2 Exam | 2025 Complete Study Set | Canadian Welding Bureau
Section 1: Welding Processes, Equipment &
Parameters
Q1 – Q10
Q1: Which welding process uses a continuously fed consumable electrode and external shielding
gas?
A. Shielded Metal Arc Welding (SMAW)
B. Gas Metal Arc Welding (GMAW) [CORRECT ANSWER]
C. Gas Tungsten Arc Welding (GTAW)
D. Submerged Arc Welding (SAW)
Rationale: GMAW (MIG) uses a continuously fed wire electrode with external shielding gas
(Ar, CO2, or mixtures); SMAW uses stick electrodes with flux coating, GTAW uses
non-consumable tungsten, and SAW uses granular flux with continuous wire but no external
gas.
Q2: In GMAW, which metal transfer mode produces the least spatter and is best for thin
materials?
A. Globular transfer
B. Spray transfer
C. Short-circuit transfer [CORRECT ANSWER]
D. Pulsed-spray transfer
Rationale: Short-circuit transfer operates at low current/voltage with frequent arc extinction,
producing minimal spatter and low heat input ideal for thin gauge materials; globular has high
spatter, spray requires high heat, and pulsed-spray is a controlled variant of spray.
Q3: Which polarity is typically used for SMAW welding of carbon steel with E7018 electrodes?
A. DCEN (Direct Current Electrode Negative)
B. DCEP (Direct Current Electrode Positive) [CORRECT ANSWER]
C. AC (Alternating Current)
D. Either polarity works equally
Rationale: E7018 low-hydrogen electrodes require DCEP for proper arc stability, penetration,
and hydrogen control; DCEN is used for some flux-cored wires, AC is for specific electrodes
like E6011, and polarity selection is critical for weld quality.
Page 3
Questions & Answers | 2025 Complete Study Set
Canadian Welding Bureau Level 2 Certification
Comprehensive Practice Review
50 Questions | 2026/2027 Aligned | A+ Graded Real Exam
Canadian Welding Bureau (CWB)
CSA W47.1 | CSA W59 | CSA W178.2
Generated: May 28, 2026
, CWB Level 2 Exam | 2025 Complete Study Set | Canadian Welding Bureau
Table of Contents
Section 1 Welding Processes, Equipment & Parameters (Q1–Q10)
Section 2 Welding Symbols, Blueprint Reading & Joint Design (Q11–Q20)
Section 3 Welding Metallurgy, Materials & Heat Treatment (Q21–Q30)
Section 4 Weld Discontinuities, Inspection Methods & NDT Basics (Q31–Q40)
Section 5 Welding Procedures, Qualifications & Code Compliance (Q41–Q50)
Appendix Answer Key Quick Reference
Page 2
, CWB Level 2 Exam | 2025 Complete Study Set | Canadian Welding Bureau
Section 1: Welding Processes, Equipment &
Parameters
Q1 – Q10
Q1: Which welding process uses a continuously fed consumable electrode and external shielding
gas?
A. Shielded Metal Arc Welding (SMAW)
B. Gas Metal Arc Welding (GMAW) [CORRECT ANSWER]
C. Gas Tungsten Arc Welding (GTAW)
D. Submerged Arc Welding (SAW)
Rationale: GMAW (MIG) uses a continuously fed wire electrode with external shielding gas
(Ar, CO2, or mixtures); SMAW uses stick electrodes with flux coating, GTAW uses
non-consumable tungsten, and SAW uses granular flux with continuous wire but no external
gas.
Q2: In GMAW, which metal transfer mode produces the least spatter and is best for thin
materials?
A. Globular transfer
B. Spray transfer
C. Short-circuit transfer [CORRECT ANSWER]
D. Pulsed-spray transfer
Rationale: Short-circuit transfer operates at low current/voltage with frequent arc extinction,
producing minimal spatter and low heat input ideal for thin gauge materials; globular has high
spatter, spray requires high heat, and pulsed-spray is a controlled variant of spray.
Q3: Which polarity is typically used for SMAW welding of carbon steel with E7018 electrodes?
A. DCEN (Direct Current Electrode Negative)
B. DCEP (Direct Current Electrode Positive) [CORRECT ANSWER]
C. AC (Alternating Current)
D. Either polarity works equally
Rationale: E7018 low-hydrogen electrodes require DCEP for proper arc stability, penetration,
and hydrogen control; DCEN is used for some flux-cored wires, AC is for specific electrodes
like E6011, and polarity selection is critical for weld quality.
Page 3
