Michigan Welding Technician Level 1
Exam Practice Questions And Correct
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Rationale 2026 Q&A| Instant Download
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1. Which of the following welding processes uses a continuously fed
consumable electrode and an inert shielding gas?
A. Shielded Metal Arc Welding (SMAW)
B. Gas Tungsten Arc Welding (GTAW)
C. Gas Metal Arc Welding (GMAW)
D. Oxy-Acetylene Welding (OAW)
Rationale: Gas Metal Arc Welding (GMAW), also known as MIG
welding, employs a continuously fed wire electrode and an inert gas
such as argon or CO₂ to shield the weld from contamination.
2. When preparing a joint for a fillet weld, the edge of the base metal
should be:
A. Completely flat without bevel
B. Cleaned of rust, oil, and scale
C. Painted for visibility
D. Heated to 600°F before welding
Rationale: Proper joint preparation requires removing rust, oil, paint,
and scale to ensure proper fusion and prevent weld defects.
3. What is the primary function of a flux in welding?
A. To increase the welding current
B. To cool the weld
C. To protect the molten metal from atmospheric contamination
D. To serve as a filler material
, Rationale: Flux forms a protective layer over the molten weld metal,
preventing oxidation and contamination from the surrounding
atmosphere.
4. Which welding position is described as flat, with the workpiece lying
horizontally and the welding performed from the top?
A. Vertical
B. Overhead
C. Horizontal
D. Flat
Rationale: The flat welding position has the workpiece horizontal
and the welding performed on top, which is the easiest and most
common position.
5. Which of the following is a common defect caused by excessive
welding current?
A. Porosity
B. Burn-through
C. Undercut
D. Lack of fusion
Rationale: Excessive current can melt too much base metal, creating
burn-through, especially on thin materials.
6. In SMAW, the “E6013” electrode designation indicates:
A. Electrode type, diameter, and coating
B. Electrode manufacturer code
C. Tensile strength, position, and coating type
D. Welding current and gas type
Rationale: In E6013, "60" indicates 60,000 psi tensile strength, "1"
indicates all-position use, and "3" refers to the type of coating and
current compatibility.
7. Preheating steel before welding is primarily done to:
A. Increase deposition rate
B. Reduce the risk of cracking
C. Change the metal color
D. Remove moisture from the weld rod
Rationale: Preheating slows the cooling rate, reducing residual stress
, and the likelihood of weld cracking, particularly in high-carbon or
alloy steels.
8. Which gas is commonly used as a shielding gas in GMAW for carbon
steel?
A. Oxygen
B. Nitrogen
C. Helium
D. Carbon dioxide (CO₂) or argon/CO₂ mix
Rationale: Carbon dioxide or an argon-CO₂ mixture provides
adequate shielding for GMAW on carbon steel, preventing oxidation
of the weld pool.
9. The term “weld penetration” refers to:
A. The thickness of the electrode
B. The width of the weld bead
C. The depth that the weld metal fuses into the base metal
D. The length of the weld
Rationale: Weld penetration is the measure of how deeply the
molten weld metal fuses into the base metal, which is crucial for
weld strength.
10. Which type of joint is most commonly used for corner
connections in sheet metal?
A. Butt joint
B. Lap joint
C. Tee joint
D. Corner joint
Rationale: Corner joints join two pieces at a 90° angle, typically in
sheet metal fabrications, providing structural integrity at corners.
11. Which personal protective equipment (PPE) is essential to
protect eyes from UV radiation during arc welding?
A. Safety glasses
B. Face shield only
C. Welding helmet with proper shade lens
D. Ear plugs
Rationale: A welding helmet with an appropriate shade lens protects
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. Which of the following welding processes uses a continuously fed
consumable electrode and an inert shielding gas?
A. Shielded Metal Arc Welding (SMAW)
B. Gas Tungsten Arc Welding (GTAW)
C. Gas Metal Arc Welding (GMAW)
D. Oxy-Acetylene Welding (OAW)
Rationale: Gas Metal Arc Welding (GMAW), also known as MIG
welding, employs a continuously fed wire electrode and an inert gas
such as argon or CO₂ to shield the weld from contamination.
2. When preparing a joint for a fillet weld, the edge of the base metal
should be:
A. Completely flat without bevel
B. Cleaned of rust, oil, and scale
C. Painted for visibility
D. Heated to 600°F before welding
Rationale: Proper joint preparation requires removing rust, oil, paint,
and scale to ensure proper fusion and prevent weld defects.
3. What is the primary function of a flux in welding?
A. To increase the welding current
B. To cool the weld
C. To protect the molten metal from atmospheric contamination
D. To serve as a filler material
, Rationale: Flux forms a protective layer over the molten weld metal,
preventing oxidation and contamination from the surrounding
atmosphere.
4. Which welding position is described as flat, with the workpiece lying
horizontally and the welding performed from the top?
A. Vertical
B. Overhead
C. Horizontal
D. Flat
Rationale: The flat welding position has the workpiece horizontal
and the welding performed on top, which is the easiest and most
common position.
5. Which of the following is a common defect caused by excessive
welding current?
A. Porosity
B. Burn-through
C. Undercut
D. Lack of fusion
Rationale: Excessive current can melt too much base metal, creating
burn-through, especially on thin materials.
6. In SMAW, the “E6013” electrode designation indicates:
A. Electrode type, diameter, and coating
B. Electrode manufacturer code
C. Tensile strength, position, and coating type
D. Welding current and gas type
Rationale: In E6013, "60" indicates 60,000 psi tensile strength, "1"
indicates all-position use, and "3" refers to the type of coating and
current compatibility.
7. Preheating steel before welding is primarily done to:
A. Increase deposition rate
B. Reduce the risk of cracking
C. Change the metal color
D. Remove moisture from the weld rod
Rationale: Preheating slows the cooling rate, reducing residual stress
, and the likelihood of weld cracking, particularly in high-carbon or
alloy steels.
8. Which gas is commonly used as a shielding gas in GMAW for carbon
steel?
A. Oxygen
B. Nitrogen
C. Helium
D. Carbon dioxide (CO₂) or argon/CO₂ mix
Rationale: Carbon dioxide or an argon-CO₂ mixture provides
adequate shielding for GMAW on carbon steel, preventing oxidation
of the weld pool.
9. The term “weld penetration” refers to:
A. The thickness of the electrode
B. The width of the weld bead
C. The depth that the weld metal fuses into the base metal
D. The length of the weld
Rationale: Weld penetration is the measure of how deeply the
molten weld metal fuses into the base metal, which is crucial for
weld strength.
10. Which type of joint is most commonly used for corner
connections in sheet metal?
A. Butt joint
B. Lap joint
C. Tee joint
D. Corner joint
Rationale: Corner joints join two pieces at a 90° angle, typically in
sheet metal fabrications, providing structural integrity at corners.
11. Which personal protective equipment (PPE) is essential to
protect eyes from UV radiation during arc welding?
A. Safety glasses
B. Face shield only
C. Welding helmet with proper shade lens
D. Ear plugs
Rationale: A welding helmet with an appropriate shade lens protects
