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