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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) SMAW (Stick)
D) GMAW (MIG)
  • 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 protect the weld from atmospheric contamination
D) To cool the weld faster
  • 3. Which safety equipment is essential for welding?
A) Short-sleeved shirt
B) Sandals
C) No gloves
D) Welding helmet
  • 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) Lack of fusion between weld and base metal
B) Excessive weld metal on the surface
C) A weld that is too small
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 DCEP
C) Only AC
D) Only DCEN
  • 7. What does 'GMAW' stand for?
A) Gas Mixture Arc Welding
B) Guided Metal Arc Welding
C) Ground Metal Arc Welding
D) Gas Metal 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) GTAW (TIG)
B) SMAW (Stick)
C) All of the above
D) GMAW (MIG)
  • 10. What is 'porosity' in welding?
A) Gas pockets in the weld metal
B) Cracks in the weld metal
C) Excessive penetration
D) Incomplete fusion
  • 11. What does 'GTAW' stand for?
A) Guided Tungsten Arc Welding
B) Ground Tungsten Arc Welding
C) Gas Tungsten Arc Welding
D) Gas Torch Arc Welding
  • 12. Which gas is commonly used as a shielding gas in GTAW?
A) Oxygen
B) Carbon Dioxide
C) Argon
D) Nitrogen
  • 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 width of the weld bead
B) The depth to which the weld metal fuses into the base metal
C) The angle of the welding electrode
D) The height of the weld bead
  • 15. Which electrode is commonly used for SMAW (Stick) welding of mild steel?
A) E6010 or E7018
B) Pure Tungsten
C) Copper
D) Aluminum
  • 16. What is the purpose of preheating metal before welding?
A) To reduce the risk of cracking
B) To eliminate the need for shielding gas
C) To increase the welding speed
D) To make the metal easier to cut
  • 17. What is 'DCEP' polarity?
A) Direct Current Electrode Positive
B) Alternating Current Electrode Positive
C) Direct Current Electrode Negative
D) Alternating Current Electrode Negative
  • 18. What is 'lack of fusion'?
A) A weld that is too small
B) A weld that is too large
C) Failure of the weld metal to fuse properly with the base metal
D) Excessive penetration
  • 19. What does 'FCAW' stand for?
A) Flux Covered Arc Welding
B) Flux Cored Arc Welding
C) Filament Core 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) Corner Joint
D) Lap 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 improve visibility
B) To cool the welding machine
C) To prevent the weld from cooling too quickly
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 clean the weld
C) To relieve stress in the weld
D) To add filler metal to the weld
  • 24. What is 'DCEP' commonly used for in SMAW?
A) Welding aluminum.
B) Welding thin materials.
C) Welding with some types of electrodes for deeper penetration.
D) All welding applications.
  • 25. Which material is best suited for GTAW (TIG) welding due to its precision?
A) Wood
B) Cast Iron
C) Mild Steel
D) Aluminum
  • 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) 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) SMAW (Stick)
B) GTAW (TIG)
C) Submerged Arc Welding (SAW)
D) Oxy-Acetylene Welding
  • 29. What type of fire extinguisher is best for welding?
A) B
B) A
C) D
D) ABC
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