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