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