Michigan Welding Inspector Level 1
Exam Practice Questions And Correct
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1. What is the primary purpose of a pre-weld joint inspection?
A. To verify welding machine settings
B. To ensure joint fit-up and cleanliness meet specifications
C. To document welder qualifications
D. To measure finished weld dimensions
A pre-weld joint inspection confirms that the joint preparation,
fit-up, and cleanliness comply with the applicable code or drawing
requirements.
2. In a fillet weld symbol, the size indicated refers to:
A. The leg length of the weld
B. The depth of penetration
C. The throat thickness of the weld
D. The length of the weld
On a fillet weld symbol, the size number represents the effective
throat thickness, which is critical for strength calculations.
3. What does a groove weld primarily provide?
A. Cosmetic surface finish
B. Complete joint penetration where required
C. Temporary tack holding
D. Reinforcement reduction
, Groove welds are used to achieve full penetration and strength in
joints that require complete fusion between parts.
4. Which schedule pipe has the thinnest wall?
A. SCH 80
B. SCH 40
C. SCH 160
D. XXS
Schedule 40 pipe has a thinner wall thickness than Sch 80 and
heavier schedules.
5. What is the primary hazard associated with inert gas cylinders?
A. Radiation
B. Electrical shock
C. Asphyxiation and high pressure
D. Corrosive burns
Inert gas cylinders can displace oxygen and are under high pressure,
posing asphyxiation and pressure hazards.
6. The term “NDT” stands for:
A. National Design Technology
B. New Development Test
C. Non-Destructive Testing
D. National Dimensional Tolerance
NDT refers to testing methods that do not damage the part being
inspected.
7. Which of the following is a non-destructive test method?
A. Visual Inspection
B. Acid Etch Testing
C. Sectioning
D. Bend Testing
Visual inspection is a form of NDT since it does not alter or destroy
the welding component.
8. What does the “A” in AWS D1.1 represent?
A. Aluminum
B. Acceptance criteria
C. American Welding Society
D. Arc length
, AWS stands for the American Welding Society, the organization that
publishes D1.1.
9. Which of the following filler metals is typically used for carbon steel
welding?
A. ER5356
B. ER4047
C. ER70S-3
D. ER308L
ER70S-3 is a common carbon steel filler metal for MIG welding.
10. A welding procedure specification (WPS) is used to:
A. Train welders on safety only
B. Provide welder instructions to ensure compliance with code
C. Document shop productivity
D. Record inspection results
A WPS outlines specific parameters and instructions to guide welders
in producing acceptable welds.
11. What is the minimum preheat requirement used to reduce
cracking potential?
A. To improve surface finish
B. To slow the cooling rate and reduce thermal stress
C. To clean the base metal
D. To remove hydrogen
Preheating raises base metal temperature to slow cooling and help
reduce the risk of cracking.
12. Which defect is characterized by a lack of fusion between weld
bead and base metal?
A. Porosity
B. Incomplete fusion
C. Undercut
D. Spatter
Incomplete fusion means the weld metal did not properly fuse with
the base metal.
13. Welding distortion is primarily caused by:
A. Excess filler metal
B. Poor electrode storage
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. What is the primary purpose of a pre-weld joint inspection?
A. To verify welding machine settings
B. To ensure joint fit-up and cleanliness meet specifications
C. To document welder qualifications
D. To measure finished weld dimensions
A pre-weld joint inspection confirms that the joint preparation,
fit-up, and cleanliness comply with the applicable code or drawing
requirements.
2. In a fillet weld symbol, the size indicated refers to:
A. The leg length of the weld
B. The depth of penetration
C. The throat thickness of the weld
D. The length of the weld
On a fillet weld symbol, the size number represents the effective
throat thickness, which is critical for strength calculations.
3. What does a groove weld primarily provide?
A. Cosmetic surface finish
B. Complete joint penetration where required
C. Temporary tack holding
D. Reinforcement reduction
, Groove welds are used to achieve full penetration and strength in
joints that require complete fusion between parts.
4. Which schedule pipe has the thinnest wall?
A. SCH 80
B. SCH 40
C. SCH 160
D. XXS
Schedule 40 pipe has a thinner wall thickness than Sch 80 and
heavier schedules.
5. What is the primary hazard associated with inert gas cylinders?
A. Radiation
B. Electrical shock
C. Asphyxiation and high pressure
D. Corrosive burns
Inert gas cylinders can displace oxygen and are under high pressure,
posing asphyxiation and pressure hazards.
6. The term “NDT” stands for:
A. National Design Technology
B. New Development Test
C. Non-Destructive Testing
D. National Dimensional Tolerance
NDT refers to testing methods that do not damage the part being
inspected.
7. Which of the following is a non-destructive test method?
A. Visual Inspection
B. Acid Etch Testing
C. Sectioning
D. Bend Testing
Visual inspection is a form of NDT since it does not alter or destroy
the welding component.
8. What does the “A” in AWS D1.1 represent?
A. Aluminum
B. Acceptance criteria
C. American Welding Society
D. Arc length
, AWS stands for the American Welding Society, the organization that
publishes D1.1.
9. Which of the following filler metals is typically used for carbon steel
welding?
A. ER5356
B. ER4047
C. ER70S-3
D. ER308L
ER70S-3 is a common carbon steel filler metal for MIG welding.
10. A welding procedure specification (WPS) is used to:
A. Train welders on safety only
B. Provide welder instructions to ensure compliance with code
C. Document shop productivity
D. Record inspection results
A WPS outlines specific parameters and instructions to guide welders
in producing acceptable welds.
11. What is the minimum preheat requirement used to reduce
cracking potential?
A. To improve surface finish
B. To slow the cooling rate and reduce thermal stress
C. To clean the base metal
D. To remove hydrogen
Preheating raises base metal temperature to slow cooling and help
reduce the risk of cracking.
12. Which defect is characterized by a lack of fusion between weld
bead and base metal?
A. Porosity
B. Incomplete fusion
C. Undercut
D. Spatter
Incomplete fusion means the weld metal did not properly fuse with
the base metal.
13. Welding distortion is primarily caused by:
A. Excess filler metal
B. Poor electrode storage
