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