Alberta Welding Fifth Period AIT Practice Exam
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
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1. What welding process is most commonly used for welding high-
strength low-alloy (HSLA) steels in structural applications?
A. Oxy-fuel welding
B. Gas tungsten arc welding
C. Submerged arc welding
D. Shielded metal arc welding
D
Shielded metal arc welding is widely used in structural steel due to
its versatility and suitability for HSLA steels.
2. Which factor most directly affects weld metal toughness at low
temperatures?
A. Arc voltage
B. Heat input
C. Electrode diameter
D. Travel speed
B
Heat input influences cooling rate and grain structure, which
directly affect toughness.
3. What is the primary purpose of preheating carbon steel before
welding?
, A. Increase deposition rate
B. Improve weld appearance
C. Reduce hydrogen cracking
D. Increase arc stability
C
Preheating slows cooling and allows hydrogen to escape, reducing
cracking risk.
4. Which welding position is designated as 6G?
A. Pipe horizontal, not rotated
B. Pipe vertical, rotated
C. Pipe at 45 degrees, not rotated
D. Pipe flat, rotated
C
6G is a fixed pipe position set at a 45-degree angle.
5. What defect is caused by excessive sulfur in steel?
A. Porosity
B. Hot cracking
C. Cold lap
D. Undercut
B
Sulfur promotes hot cracking during solidification.
6. Which electrode classification is considered low-hydrogen?
A. E6010
B. E6011
C. E7018
D. E7024
C
, E7018 electrodes are low-hydrogen and require controlled
storage.
7. What is the primary function of flux in SMAW electrodes?
A. Increase current flow
B. Shield molten weld metal
C. Increase penetration
D. Reduce arc length
B
Flux protects the molten weld pool from atmospheric
contamination.
8. Which inspection method detects surface-breaking cracks?
A. Radiographic testing
B. Ultrasonic testing
C. Magnetic particle testing
D. Eddy current testing
C
Magnetic particle testing is effective for surface and near-surface
defects.
9. What type of stress remains locked in a weld after cooling?
A. Tensile stress
B. Compressive stress
C. Residual stress
D. Shear stress
C
Residual stresses remain after welding due to uneven heating and
cooling.
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What welding process is most commonly used for welding high-
strength low-alloy (HSLA) steels in structural applications?
A. Oxy-fuel welding
B. Gas tungsten arc welding
C. Submerged arc welding
D. Shielded metal arc welding
D
Shielded metal arc welding is widely used in structural steel due to
its versatility and suitability for HSLA steels.
2. Which factor most directly affects weld metal toughness at low
temperatures?
A. Arc voltage
B. Heat input
C. Electrode diameter
D. Travel speed
B
Heat input influences cooling rate and grain structure, which
directly affect toughness.
3. What is the primary purpose of preheating carbon steel before
welding?
, A. Increase deposition rate
B. Improve weld appearance
C. Reduce hydrogen cracking
D. Increase arc stability
C
Preheating slows cooling and allows hydrogen to escape, reducing
cracking risk.
4. Which welding position is designated as 6G?
A. Pipe horizontal, not rotated
B. Pipe vertical, rotated
C. Pipe at 45 degrees, not rotated
D. Pipe flat, rotated
C
6G is a fixed pipe position set at a 45-degree angle.
5. What defect is caused by excessive sulfur in steel?
A. Porosity
B. Hot cracking
C. Cold lap
D. Undercut
B
Sulfur promotes hot cracking during solidification.
6. Which electrode classification is considered low-hydrogen?
A. E6010
B. E6011
C. E7018
D. E7024
C
, E7018 electrodes are low-hydrogen and require controlled
storage.
7. What is the primary function of flux in SMAW electrodes?
A. Increase current flow
B. Shield molten weld metal
C. Increase penetration
D. Reduce arc length
B
Flux protects the molten weld pool from atmospheric
contamination.
8. Which inspection method detects surface-breaking cracks?
A. Radiographic testing
B. Ultrasonic testing
C. Magnetic particle testing
D. Eddy current testing
C
Magnetic particle testing is effective for surface and near-surface
defects.
9. What type of stress remains locked in a weld after cooling?
A. Tensile stress
B. Compressive stress
C. Residual stress
D. Shear stress
C
Residual stresses remain after welding due to uneven heating and
cooling.
