How to weld - Test
  • 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 cool the weld faster
C) To protect the weld from atmospheric contamination
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) Semi-Metal Arc Welding
B) Solid Metal Arc Welding
C) Shielded Metal Arc Welding
D) Submerged 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 DCEN
B) Only AC
C) AC or DC
D) Only DCEP
  • 7. What does 'GMAW' stand for?
A) Gas Mixture Arc Welding
B) Guided Metal Arc Welding
C) Gas Metal Arc Welding
D) Ground Metal Arc Welding
  • 8. What is 'slag'?
A) The filler metal used in welding
B) The electrical ground connection
C) A byproduct of some welding processes that needs to be removed
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) SMAW (Stick)
D) All of the above
  • 10. What is 'porosity' in welding?
A) Excessive penetration
B) Cracks in the weld metal
C) Gas pockets in the weld metal
D) Incomplete fusion
  • 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) Carbon Dioxide
B) Oxygen
C) Nitrogen
D) Argon
  • 13. What is the function of a welding regulator?
A) To hold the welding electrode
B) To cool the welding machine
C) To adjust the welding voltage
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) Pure Tungsten
B) E6010 or E7018
C) Copper
D) Aluminum
  • 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) Direct Current Electrode Positive
B) Direct Current Electrode Negative
C) Alternating Current Electrode Negative
D) Alternating 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) Fused Core Arc Welding
B) Filament 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) Lap Joint
B) Corner Joint
C) T-Joint
D) Butt Joint
  • 21. What is 'spatter' in welding?
A) The shielding gas used in welding
B) The grinding wheel used to clean welds
C) The filler metal used in welding
D) Small droplets of molten metal expelled during welding
  • 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 improve visibility
D) To cool the welding machine
  • 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) Welding thin materials.
B) All welding applications.
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) Wood
B) Aluminum
C) Mild Steel
D) Cast Iron
  • 26. What is the purpose of weaving the welding electrode?
A) To speed up the welding process.
B) To widen the weld bead and improve fusion.
C) To make the weld look nicer.
D) To reduce the heat input.
  • 27. What is a common cause of weld cracking?
A) High voltage.
B) Slow travel speed.
C) Rapid cooling.
D) Using the wrong shielding gas.
  • 28. Which welding process is generally considered the fastest for welding thick steel?
A) SMAW (Stick)
B) Submerged Arc Welding (SAW)
C) GTAW (TIG)
D) Oxy-Acetylene Welding
  • 29. What type of fire extinguisher is best for welding?
A) ABC
B) D
C) A
D) B
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