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12-11-25 Welding Midterm Review 2025
Contributed by: Sandifer
  • 1. What is the base metal?
A) The flux coating
B) The shielding gas makes sparks
C) The weld bead
D) The metal to be welded
  • 2. What is an arc?
A) A type of electrode
B) A joint type that lets light fly around everywhere
C) Flow of electricity through a gaseous space or air gap
D) Light from welding
  • 3. What is arc length?
A) Length of the rod
B) The distance from the gap between plates and the clamp wire
C) The distance from the electrode to the weld pool
D) Length of the weld
  • 4. What is undercut?
A) A grove melted into the base metal that is a misaligned joint
B) Extra filler metal
C) A groove melted into base metal left unfilled
D) A surface crack
  • 5. What is a crater?
A) A buildup of slag in the face of the weld
B) A porosity pocket in the face of the weld
C) A depression in the face of the weld
D) A melted rod tip in the face of the weld
  • 6. What is the axis of weld?
A) Imaginary line through top of the bead
B) Imaginary line through center of weld metal
C) Imaginary line through weld toe
D) Imaginary line through HAZ boundary
  • 7. What is spatter?
A) Falling flux expelled that do not form part of the weld
B) Arc blow expelled that do not form part of the weld
C) Metal particles expelled that do not form part of the weld
D) Gas bubbles expelled that do not form part of the weld
  • 8. What is slag inclusion?
A) Non-metallic material trapped in weld
B) Hot cracks trapped in the weld pool at the end
C) Steel trapped in slag
D) Undercut failure
  • 9. What is a joint?
A) Location where two or more members are joined
B) filler metal
C) a welding defect
D) The end of the metal piece that is welded first.
  • 10. What is a crater crack?
A) A centerline crack
B) A crack in the crater of a weld bead
C) A stress fracture formed cause metal was too clean
D) A cold shut
  • 11. What is ductility
A) Ability to resist rust
B) Ability to remain cold.
C) Ability to stay magnetized
D) Ability to deform without failure
  • 12. What is duty cycle?
A) Percentage of time welders operate at rated output
B) Arc stability rating
C) Electrode burn rate is working nonstop
D) Machine lifespan over a 10 min period
  • 13. What is filler metal?
A) Metal added to make a welded joint
B) Flux coating
C) Metal base plate
D) Distance fusion extends into base metal
  • 14. What is depth of fusion?
A) Distance bead width extends
B) Weld height
C) Rod penetration
D) Distance fusion extends into base metal
  • 15. What is penetration?
A) Extent weld metal combines with base metal
B) Arc reach
C) Bead surface depth
D) Slag depth
  • 16. What is deposition rate?
A) Length welded per hour
B) Weight of metal deposited per unit time
C) Amount of slag produced
D) Heat generated
  • 17. What does SMAW stand for?
A) Solid Metal Arc Welding
B) Shielded Metal Arc Welding
C) Stick Metal Arc Work
D) Shielded Mechanical Arc Welding
  • 18. What is SMAW?
A) Uses tungsten electrode
B) Uses shielding gas
C) Purely mechanical process
D) Uses heat of an arc between covered electrode and the work
  • 19. Advantage of SMAW?
A) Portable and inexpensive
B) Fully automated
C) No slag
D) High speed
  • 20. Disadvantage of SMAW?
A) Requires gas bottles
B) Cannot weld steel
C) Only works indoors
D) It’s slow
  • 21. 7018 can use:
A) AC only
B) AC or DC
C) DC only
D) Neither
  • 22. What polarity do we weld with?
A) Straight polarity
B) No polarity
C) Alternating ground
D) Reverse polarity
  • 23. Reverse polarity:
A) Electrode is positive, ground negative
B) No polarity exists
C) Electrode negative
D) Ground floats
  • 24. Two safety points:
A) Always weld outside use sitka gloves
B) Proper ventilation and protective clothing
C) Use small rods and low heat
D) Avoid using gloves never safety glasses
  • 25. SMAW electrode:
A) MIG wire
B) TIG tungsten
C) Consumable electrode covered with flux
D) Carbon rod
  • 26. Strength of 7018 rod:
A) 120k psi
B) 18k psi
C) 40k psi
D) 70k psi
  • 27. Meaning of 3rd digit in 7018:
A) Coating type
B) Rod length
C) Welding position
D) Positive polarity rod
  • 28. Meaning of 4th digit in 7018:
A) Composition of rod
B) Strength
C) Arc length
D) Diameter
  • 29. Four rod groups:
A) Soft rods, hard rods, hot rods, cold rods
B) Inert, reactive, passive, active
C) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
D) High carbon, low carbon, stainless, alloy
  • 30. DCEP:
A) Direct Current Electrode Positive
B) Dual Current Electrode Phase
C) Direct Current Elevated Pressure
D) Direct Coil Energy Pulse
  • 31. Why put rods in oven?
A) Reduce moisture
B) heat for penetration
C) sterilize
D) Prevent Bending
  • 32. Minimum oven temperature?
A) 175°F
B) 500°F
C) 100°F
D) 250°F
  • 33. E stands for:
A) Edge
B) Electrode
C) Earth
D) Energy
  • 34. Rod lengths:
A) 1–2 feet
B) 3–6 inches
C) 20–30 inches
D) 9–18 inches
  • 35. MR or R:
A) Machine ready
B) Medium rated
C) Metal rod
D) Moisture resistant
  • 36. Base metal we use:
A) Aluminum
B) A36 mild steel
C) Cast iron
D) Stainless steel
  • 37. Light produced in welding:
A) X‑ray emissions
B) Blue spectrum only
C) Electro violet and ultra red light
D) Green infrared
  • 38. Five joint types:
A) Arc, gas, flux, rod, plate
B) Curve, twist, bend, fold, lock
C) Lap, butt, edge, corner, T-joint
D) Root, face, toe, leg, web
  • 39. AWS:
A) American Welding Society
B) Arc Welding System
C) Advanced Weld Standards
D) American Wire Service
  • 40. Heat affected zone:
A) Metal melted completely
B) Slag-covered area
C) Joint line
D) Metal altered but not melted
  • 41. PJP:
A) Parallel Joint Pass
B) Pressure Joint Process
C) Partial Joint Penetration
D) Primary Joint Preparation
  • 42. CJP:
A) Controlled Joint Process
B) Complete Joint Penetration
C) Central Joint Plane
D) Cut Joint Position
  • 43. 1F:
A) Vertical fillet
B) Flat fillet
C) Flat groove
D) Overhead fillet
  • 44. 2F
A) Vertical groove
B) Horizontal fillet
C) Flat Fillet
D) Horizontal groove
  • 45. 3F
A) Vertical fillet
B) Overhead fillet
C) Flat fillet
D) Horizontal groove
  • 46. 4F:
A) Vertical fillet
B) Flat groove
C) Horizontal fillet
D) Overhead fillet
  • 47. 1G:
A) Vertical groove
B) Flat groove
C) Overhead groove
D) Flat fillet
  • 48. 2G:
A) Horizontal fillet
B) Horizontal groove
C) Vertical groove
D) Flat groove
  • 49. 3G:
A) Flat groove
B) Horizontal fillet
C) Vertical groove
D) Overhead groove
  • 50. 4G:
A) Vertical groove
B) Overhead groove
C) Flat groove
D) Horizontal fillet
  • 51. Weave:
A) Weld bead made with transverse movement
B) Root buildup
C) Cleaning motion
D) Slag brushing
  • 52. No large amount of ______ should be in the weld
A) Hydrogen
B) Mercury
C) Sulphur
D) Oxygen
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