How to weld
  • 1. Which welding process uses a non-consumable tungsten electrode?
A) GMAW (MIG)
B) FCAW (Flux-Cored)
C) SMAW (Stick)
D) GTAW (TIG)
  • 2. What is the purpose of shielding gas in welding?
A) To protect the weld from atmospheric contamination
B) To add filler metal to the weld
C) To cool the weld faster
D) To increase the welding voltage
  • 3. Which safety equipment is essential for welding?
A) Sandals
B) No gloves
C) Welding helmet
D) Short-sleeved shirt
  • 4. What does 'SMAW' stand for?
A) Solid Metal Arc Welding
B) Semi-Metal Arc Welding
C) Submerged Metal Arc Welding
D) Shielded Metal Arc Welding
  • 5. What is 'undercut' in welding?
A) Lack of fusion between weld and base metal
B) Excessive weld metal on the surface
C) A groove melted into the base metal next to the weld
D) A weld that is too small
  • 6. What type of current is used in SMAW (Stick) welding?
A) AC or DC
B) Only AC
C) Only DCEP
D) Only DCEN
  • 7. What does 'GMAW' stand for?
A) Gas Metal Arc Welding
B) Ground Metal Arc Welding
C) Gas Mixture Arc Welding
D) Guided Metal Arc Welding
  • 8. What is 'slag'?
A) The filler metal used in welding
B) A byproduct of some welding processes that needs to be removed
C) The electrical ground connection
D) The shielding gas used in welding
  • 9. Which welding process typically uses a constant voltage power source?
A) SMAW (Stick)
B) GMAW (MIG)
C) All of the above
D) GTAW (TIG)
  • 10. What is 'porosity' in welding?
A) Gas pockets in the weld metal
B) Incomplete fusion
C) Cracks in the weld metal
D) Excessive penetration
  • 11. What does 'GTAW' stand for?
A) Guided Tungsten Arc Welding
B) Gas Torch Arc Welding
C) Gas Tungsten Arc Welding
D) Ground Tungsten Arc Welding
  • 12. Which gas is commonly used as a shielding gas in GTAW?
A) Nitrogen
B) Argon
C) Oxygen
D) Carbon Dioxide
  • 13. What is the function of a welding regulator?
A) To adjust the welding voltage
B) To cool the welding machine
C) To hold the welding electrode
D) To control the flow of shielding gas
  • 14. What is 'penetration' in welding?
A) The depth to which the weld metal fuses into the base metal
B) The height of the weld bead
C) The angle of the welding electrode
D) The width of the weld bead
  • 15. Which electrode is commonly used for SMAW (Stick) welding of mild steel?
A) Copper
B) Aluminum
C) E6010 or E7018
D) Pure Tungsten
  • 16. What is the purpose of preheating metal before welding?
A) To make the metal easier to cut
B) To reduce the risk of cracking
C) To eliminate the need for shielding gas
D) To increase the welding speed
  • 17. What is 'DCEP' polarity?
A) Direct Current Electrode Negative
B) Alternating Current Electrode Negative
C) Alternating Current Electrode Positive
D) Direct Current Electrode Positive
  • 18. What is 'lack of fusion'?
A) A weld that is too large
B) A weld that is too small
C) Excessive penetration
D) Failure of the weld metal to fuse properly with the base metal
  • 19. What does 'FCAW' stand for?
A) Filament Core Arc Welding
B) Flux Covered Arc Welding
C) Fused Core Arc Welding
D) Flux Cored Arc Welding
  • 20. Which type of welding joint is formed when two pieces of metal are placed edge to edge?
A) Lap Joint
B) T-Joint
C) Butt Joint
D) Corner Joint
  • 21. What is 'spatter' in welding?
A) The filler metal used in welding
B) The grinding wheel used to clean welds
C) Small droplets of molten metal expelled during welding
D) The shielding gas used in welding
  • 22. Why is proper ventilation important during welding?
A) To cool the welding machine
B) To improve visibility
C) To prevent the weld from cooling too quickly
D) To remove harmful fumes and gases
  • 23. What is the purpose of post-weld heat treatment?
A) To add filler metal to the weld
B) To clean the weld
C) To increase the welding speed
D) To relieve stress in the weld
  • 24. What is 'DCEP' commonly used for in SMAW?
A) Welding thin materials.
B) Welding aluminum.
C) All welding applications.
D) Welding with some types of electrodes for deeper penetration.
  • 25. Which material is best suited for GTAW (TIG) welding due to its precision?
A) Aluminum
B) Cast Iron
C) Wood
D) Mild Steel
  • 26. What is the purpose of weaving the welding electrode?
A) To reduce the heat input.
B) To speed up the welding process.
C) To widen the weld bead and improve fusion.
D) To make the weld look nicer.
  • 27. What is a common cause of weld cracking?
A) Using the wrong shielding gas.
B) Slow travel speed.
C) High voltage.
D) Rapid cooling.
  • 28. Which welding process is generally considered the fastest for welding thick steel?
A) Oxy-Acetylene Welding
B) Submerged Arc Welding (SAW)
C) SMAW (Stick)
D) GTAW (TIG)
  • 29. What type of fire extinguisher is best for welding?
A) A
B) ABC
C) B
D) D
Created with That Quiz — the math test generation site with resources for other subject areas.