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How to weld - Test
Contributed by: Sadler
  • 1. Which welding process uses a non-consumable tungsten electrode?
A) SMAW (Stick)
B) GTAW (TIG)
C) FCAW (Flux-Cored)
D) GMAW (MIG)
  • 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) Sandals
B) Short-sleeved shirt
C) Welding helmet
D) No gloves
  • 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) Lack of fusion between weld and base metal
C) Excessive weld metal on the surface
D) A groove melted into the base metal next to the weld
  • 6. What type of current is used in SMAW (Stick) welding?
A) AC or DC
B) Only AC
C) Only DCEN
D) Only DCEP
  • 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 shielding gas used in welding
B) The filler metal used in welding
C) A byproduct of some welding processes that needs to be removed
D) The electrical ground connection
  • 9. Which welding process typically uses a constant voltage power source?
A) GTAW (TIG)
B) GMAW (MIG)
C) SMAW (Stick)
D) All of the above
  • 10. What is 'porosity' in welding?
A) Gas pockets in the weld metal
B) Excessive penetration
C) Incomplete fusion
D) Cracks 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) Argon
B) Oxygen
C) Nitrogen
D) Carbon Dioxide
  • 13. What is the function of a welding regulator?
A) To hold the welding electrode
B) To control the flow of shielding gas
C) To adjust the welding voltage
D) To cool the welding machine
  • 14. What is 'penetration' in welding?
A) The width of the weld bead
B) The angle of the welding electrode
C) The depth to which the weld metal fuses into the base metal
D) The height of the weld bead
  • 15. Which electrode is commonly used for SMAW (Stick) welding of mild steel?
A) Aluminum
B) Copper
C) E6010 or E7018
D) Pure Tungsten
  • 16. What is the purpose of preheating metal before welding?
A) To eliminate the need for shielding gas
B) To increase the welding speed
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 Positive
C) Alternating Current Electrode Negative
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) A weld that is too small
C) Excessive penetration
D) A weld that is too large
  • 19. What does 'FCAW' stand for?
A) Fused Core Arc Welding
B) Flux Cored Arc Welding
C) Flux Covered Arc Welding
D) Filament Core Arc Welding
  • 20. Which type of welding joint is formed when two pieces of metal are placed edge to edge?
A) Corner Joint
B) Lap Joint
C) T-Joint
D) Butt Joint
  • 21. What is 'spatter' in welding?
A) Small droplets of molten metal expelled during welding
B) The shielding gas used in welding
C) The filler metal used in welding
D) The grinding wheel used to clean welds
  • 22. Why is proper ventilation important during welding?
A) To prevent the weld from cooling too quickly
B) To remove harmful fumes and gases
C) To cool the welding machine
D) To improve visibility
  • 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) All welding applications.
B) Welding aluminum.
C) Welding thin materials.
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) Wood
B) Mild Steel
C) Cast Iron
D) Aluminum
  • 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) Rapid cooling.
C) High voltage.
D) Slow travel speed.
  • 28. Which welding process is generally considered the fastest for welding thick steel?
A) Oxy-Acetylene Welding
B) GTAW (TIG)
C) SMAW (Stick)
D) Submerged Arc Welding (SAW)
  • 29. What type of fire extinguisher is best for welding?
A) D
B) A
C) B
D) ABC
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