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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) GMAW (MIG)
D) FCAW (Flux-Cored)
  • 2. What is the purpose of shielding gas in welding?
A) To protect the weld from atmospheric contamination
B) To add filler metal to the weld
C) To cool the weld faster
D) To increase the welding voltage
  • 3. Which safety equipment is essential for welding?
A) Welding helmet
B) Short-sleeved shirt
C) No gloves
D) Sandals
  • 4. What does 'SMAW' stand for?
A) Solid Metal Arc Welding
B) Semi-Metal Arc Welding
C) Submerged 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) A weld that is too small
C) Excessive weld metal on the surface
D) Lack of fusion between weld and base metal
  • 6. What type of current is used in SMAW (Stick) welding?
A) Only DCEN
B) Only DCEP
C) Only AC
D) AC or DC
  • 7. What does 'GMAW' stand for?
A) Guided Metal Arc Welding
B) Gas Metal Arc Welding
C) Gas Mixture Arc Welding
D) Ground Metal Arc Welding
  • 8. What is 'slag'?
A) The electrical ground connection
B) A byproduct of some welding processes that needs to be removed
C) The shielding gas used in welding
D) The filler metal used in welding
  • 9. Which welding process typically uses a constant voltage power source?
A) GMAW (MIG)
B) SMAW (Stick)
C) GTAW (TIG)
D) All of the above
  • 10. What is 'porosity' in welding?
A) Incomplete fusion
B) Excessive penetration
C) Gas pockets in the weld metal
D) Cracks in the weld metal
  • 11. What does 'GTAW' stand for?
A) Guided Tungsten Arc Welding
B) Gas Torch 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) Nitrogen
B) Argon
C) Carbon Dioxide
D) Oxygen
  • 13. What is the function of a welding regulator?
A) To hold the welding electrode
B) To adjust the welding voltage
C) To control the flow of shielding gas
D) To cool the welding machine
  • 14. What is 'penetration' in welding?
A) The angle of the welding electrode
B) The width of the weld bead
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) Pure Tungsten
B) E6010 or E7018
C) Aluminum
D) Copper
  • 16. What is the purpose of preheating metal before welding?
A) To make the metal easier to cut
B) To reduce the risk of cracking
C) To eliminate the need for shielding gas
D) To increase the welding speed
  • 17. What is 'DCEP' polarity?
A) Direct Current Electrode Negative
B) Direct Current Electrode Positive
C) Alternating Current Electrode Positive
D) Alternating 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 large
D) A weld that is too small
  • 19. What does 'FCAW' stand for?
A) Flux Cored Arc Welding
B) Flux Covered Arc Welding
C) Fused Core 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) Butt Joint
B) Lap Joint
C) T-Joint
D) Corner Joint
  • 21. What is 'spatter' in welding?
A) Small droplets of molten metal expelled during welding
B) The grinding wheel used to clean welds
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 cool the welding machine
C) To improve visibility
D) To remove harmful fumes and gases
  • 23. What is the purpose of post-weld heat treatment?
A) To clean the weld
B) To add filler metal to the weld
C) To relieve stress in the weld
D) To increase the welding speed
  • 24. What is 'DCEP' commonly used for in SMAW?
A) Welding aluminum.
B) Welding thin materials.
C) All welding applications.
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) Cast Iron
B) Mild Steel
C) Aluminum
D) Wood
  • 26. What is the purpose of weaving the welding electrode?
A) To reduce the heat input.
B) To speed up the welding process.
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) Slow travel speed.
B) Using the wrong shielding gas.
C) High voltage.
D) Rapid cooling.
  • 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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