Kansas Welding Contractor Exam
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. Which welding process uses a continuously fed consumable electrode
and shielding gas?
A. Shielded Metal Arc Welding (SMAW)
B. Gas Tungsten Arc Welding (GTAW)
C. Gas Metal Arc Welding (GMAW)
D. Flux-Cored Arc Welding (FCAW)
GMAW, or MIG welding, uses a continuously fed wire electrode with
shielding gas to protect the weld.
2. What is the main purpose of preheating steel before welding?
A. Reduce electrode consumption
B. Reduce the risk of cracking
C. Increase weld speed
D. Eliminate slag formation
Preheating reduces the cooling rate and minimizes the risk of weld
and base metal cracking.
3. Which welding position is designated as 2F?
A. Overhead groove weld
B. Vertical groove weld
C. Horizontal fillet weld
D. Flat fillet weld
2F represents a horizontal fillet weld.
4. What type of electrode coating is most suitable for outdoor welding?
A. Rutile
, B. Cellulose
C. Basic
D. Low hydrogen
Cellulose-coated electrodes produce a deep penetrating arc and a
forceful slag, ideal for outdoor welding.
5. Which of the following gases is commonly used for shielding in GTAW
of stainless steel?
A. Oxygen
B. Nitrogen
C. Hydrogen
D. Argon
Argon is inert, preventing oxidation of the stainless steel during
GTAW.
6. In welding, what does “amperage” control?
A. Weld length
B. Heat input
C. Arc voltage
D. Shielding gas flow
Amperage controls the current, which determines the heat applied to
the weld.
7. Which welding defect appears as a cavity along the weld bead due to
trapped gas?
A. Porosity
B. Undercut
C. Spatter
D. Overlap
Porosity occurs when gases become trapped in the weld metal during
solidification.
8. Which welding process is best for thin aluminum sheets?
A. SMAW
B. GTAW
C. Oxy-fuel welding
D. FCAW
GTAW (TIG) provides precise heat control, ideal for thin aluminum.
, 9. What is the primary purpose of a back purge when welding stainless
steel?
A. Prevent slag formation
B. Increase penetration
C. Prevent oxidation on the backside
D. Reduce arc voltage
Back purging with inert gas protects the weld root from oxidation.
10. Which welding process uses a flux-filled tubular wire?
A. GMAW
B. SMAW
C. FCAW
D. GTAW
Flux-cored arc welding (FCAW) uses a tubular electrode filled with
flux.
11. What is the minimum tensile strength of ASTM A36 steel?
A. 30,000 psi
B. 40,000 psi
C. 58,000–80,000 psi
D. 100,000 psi
ASTM A36 steel has a minimum tensile strength ranging from 58,000
to 80,000 psi.
12. Which of the following is a characteristic of low-hydrogen
electrodes?
A. Fast-freezing slag
B. Reduced risk of hydrogen-induced cracking
C. High smoke emission
D. Designed for outdoor welding
Low-hydrogen electrodes minimize hydrogen absorption, reducing
cracking in steel.
13. Which welding process typically produces the least spatter?
A. SMAW
B. GTAW
C. FCAW
D. Submerged Arc Welding
GTAW produces a clean weld with virtually no spatter.
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. Which welding process uses a continuously fed consumable electrode
and shielding gas?
A. Shielded Metal Arc Welding (SMAW)
B. Gas Tungsten Arc Welding (GTAW)
C. Gas Metal Arc Welding (GMAW)
D. Flux-Cored Arc Welding (FCAW)
GMAW, or MIG welding, uses a continuously fed wire electrode with
shielding gas to protect the weld.
2. What is the main purpose of preheating steel before welding?
A. Reduce electrode consumption
B. Reduce the risk of cracking
C. Increase weld speed
D. Eliminate slag formation
Preheating reduces the cooling rate and minimizes the risk of weld
and base metal cracking.
3. Which welding position is designated as 2F?
A. Overhead groove weld
B. Vertical groove weld
C. Horizontal fillet weld
D. Flat fillet weld
2F represents a horizontal fillet weld.
4. What type of electrode coating is most suitable for outdoor welding?
A. Rutile
, B. Cellulose
C. Basic
D. Low hydrogen
Cellulose-coated electrodes produce a deep penetrating arc and a
forceful slag, ideal for outdoor welding.
5. Which of the following gases is commonly used for shielding in GTAW
of stainless steel?
A. Oxygen
B. Nitrogen
C. Hydrogen
D. Argon
Argon is inert, preventing oxidation of the stainless steel during
GTAW.
6. In welding, what does “amperage” control?
A. Weld length
B. Heat input
C. Arc voltage
D. Shielding gas flow
Amperage controls the current, which determines the heat applied to
the weld.
7. Which welding defect appears as a cavity along the weld bead due to
trapped gas?
A. Porosity
B. Undercut
C. Spatter
D. Overlap
Porosity occurs when gases become trapped in the weld metal during
solidification.
8. Which welding process is best for thin aluminum sheets?
A. SMAW
B. GTAW
C. Oxy-fuel welding
D. FCAW
GTAW (TIG) provides precise heat control, ideal for thin aluminum.
, 9. What is the primary purpose of a back purge when welding stainless
steel?
A. Prevent slag formation
B. Increase penetration
C. Prevent oxidation on the backside
D. Reduce arc voltage
Back purging with inert gas protects the weld root from oxidation.
10. Which welding process uses a flux-filled tubular wire?
A. GMAW
B. SMAW
C. FCAW
D. GTAW
Flux-cored arc welding (FCAW) uses a tubular electrode filled with
flux.
11. What is the minimum tensile strength of ASTM A36 steel?
A. 30,000 psi
B. 40,000 psi
C. 58,000–80,000 psi
D. 100,000 psi
ASTM A36 steel has a minimum tensile strength ranging from 58,000
to 80,000 psi.
12. Which of the following is a characteristic of low-hydrogen
electrodes?
A. Fast-freezing slag
B. Reduced risk of hydrogen-induced cracking
C. High smoke emission
D. Designed for outdoor welding
Low-hydrogen electrodes minimize hydrogen absorption, reducing
cracking in steel.
13. Which welding process typically produces the least spatter?
A. SMAW
B. GTAW
C. FCAW
D. Submerged Arc Welding
GTAW produces a clean weld with virtually no spatter.
