AWS Certified Welder Structural Steel
D1.1 Practice Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
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1. What does AWS D1.1 primarily cover?
A. Pipeline welding
B. Aerospace welding
C. Structural steel welding
D. Automotive welding
Answer: C
Rationale: AWS D1.1 is the Structural Welding Code for steel construction.
2. What is the minimum preheat requirement based on?
A. Welder experience
B. Base metal thickness and carbon content
C. Electrode brand
D. Shop temperature only
Answer: B
Rationale: Preheat depends on material thickness and carbon equivalent.
3. Which electrode is classified as low hydrogen?
A. E6010
B. E6011
, C. E7018
D. E6013
Answer: C
Rationale: E7018 is a low-hydrogen electrode used to reduce cracking.
4. What position is 1G?
A. Horizontal groove
B. Vertical groove
C. Flat groove
D. Overhead groove
Answer: C
Rationale: 1G refers to flat position groove welding.
5. What is the purpose of preheating?
A. Increase deposition rate
B. Reduce distortion and cracking
C. Clean the metal
D. Improve color
Answer: B
Rationale: Preheating reduces thermal shock and hydrogen cracking.
6. What defect is caused by trapped gas?
A. Undercut
B. Porosity
C. Slag inclusion
D. Overlap
Answer: B
Rationale: Porosity forms from gas entrapment during solidification.
7. What is root pass?
A. Final weld layer
B. First weld pass in a joint
C. Decorative weld
D. Cleaning pass
, Answer: B
Rationale: The root pass is the initial pass at the joint root.
8. What is undercut?
A. Raised weld bead
B. Groove melted into base metal not filled
C. Crack in weld
D. Slag deposit
Answer: B
Rationale: Undercut weakens the weld by reducing base metal thickness.
9. What polarity is used for E7018?
A. AC only
B. DCEN
C. DCEP
D. Reverse AC
Answer: C
Rationale: E7018 typically uses DCEP (reverse polarity).
10.What is the purpose of a backing bar?
A. Decoration
B. Support molten weld metal
C. Increase speed
D. Reduce cost
Answer: B
Rationale: Backing supports the root pass and ensures penetration.
11.What is slag inclusion?
A. Air bubbles
B. Trapped nonmetallic material
C. Surface crack
D. Rust deposit
Answer: B
Rationale: Slag trapped between weld passes causes inclusions.
D1.1 Practice Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
1. What does AWS D1.1 primarily cover?
A. Pipeline welding
B. Aerospace welding
C. Structural steel welding
D. Automotive welding
Answer: C
Rationale: AWS D1.1 is the Structural Welding Code for steel construction.
2. What is the minimum preheat requirement based on?
A. Welder experience
B. Base metal thickness and carbon content
C. Electrode brand
D. Shop temperature only
Answer: B
Rationale: Preheat depends on material thickness and carbon equivalent.
3. Which electrode is classified as low hydrogen?
A. E6010
B. E6011
, C. E7018
D. E6013
Answer: C
Rationale: E7018 is a low-hydrogen electrode used to reduce cracking.
4. What position is 1G?
A. Horizontal groove
B. Vertical groove
C. Flat groove
D. Overhead groove
Answer: C
Rationale: 1G refers to flat position groove welding.
5. What is the purpose of preheating?
A. Increase deposition rate
B. Reduce distortion and cracking
C. Clean the metal
D. Improve color
Answer: B
Rationale: Preheating reduces thermal shock and hydrogen cracking.
6. What defect is caused by trapped gas?
A. Undercut
B. Porosity
C. Slag inclusion
D. Overlap
Answer: B
Rationale: Porosity forms from gas entrapment during solidification.
7. What is root pass?
A. Final weld layer
B. First weld pass in a joint
C. Decorative weld
D. Cleaning pass
, Answer: B
Rationale: The root pass is the initial pass at the joint root.
8. What is undercut?
A. Raised weld bead
B. Groove melted into base metal not filled
C. Crack in weld
D. Slag deposit
Answer: B
Rationale: Undercut weakens the weld by reducing base metal thickness.
9. What polarity is used for E7018?
A. AC only
B. DCEN
C. DCEP
D. Reverse AC
Answer: C
Rationale: E7018 typically uses DCEP (reverse polarity).
10.What is the purpose of a backing bar?
A. Decoration
B. Support molten weld metal
C. Increase speed
D. Reduce cost
Answer: B
Rationale: Backing supports the root pass and ensures penetration.
11.What is slag inclusion?
A. Air bubbles
B. Trapped nonmetallic material
C. Surface crack
D. Rust deposit
Answer: B
Rationale: Slag trapped between weld passes causes inclusions.
