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12-11-25 Welding Midterm Review 2025
Contributed by: Sandifer
  • 1. What is the base metal?
A) The weld bead
B) The metal to be welded
C) The flux coating
D) The shielding gas makes sparks
  • 2. What is an arc?
A) A joint type that lets light fly around everywhere
B) A type of electrode
C) Flow of electricity through a gaseous space or air gap
D) Light from welding
  • 3. What is arc length?
A) The distance from the electrode to the weld pool
B) Length of the weld
C) The distance from the gap between plates and the clamp wire
D) Length of the rod
  • 4. What is undercut?
A) A surface crack
B) A grove melted into the base metal that is a misaligned joint
C) A groove melted into base metal left unfilled
D) Extra filler metal
  • 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 melted rod tip in the face of the weld
D) A depression in the face of the weld
  • 6. What is the axis of weld?
A) Imaginary line through center of weld metal
B) Imaginary line through weld toe
C) Imaginary line through HAZ boundary
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) Gas bubbles expelled that do not form part of the weld
C) Arc blow expelled that do not form part of the weld
D) Metal particles 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) Hot cracks trapped in the weld pool at the end
D) Steel trapped in slag
  • 9. What is a joint?
A) The end of the metal piece that is welded first.
B) filler metal
C) a welding defect
D) Location where two or more members are joined
  • 10. What is a crater crack?
A) A crack in the crater of a weld bead
B) A stress fracture formed cause metal was too clean
C) A centerline crack
D) A cold shut
  • 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) Arc stability rating
B) Electrode burn rate is working nonstop
C) Machine lifespan over a 10 min period
D) Percentage of time welders operate at rated output
  • 13. What is filler metal?
A) Flux coating
B) Metal added to make a welded joint
C) Metal base plate
D) Distance fusion extends into base metal
  • 14. What is depth of fusion?
A) Distance fusion extends into base metal
B) Distance bead width extends
C) Weld height
D) Rod penetration
  • 15. What is penetration?
A) Bead surface depth
B) Extent weld metal combines with base metal
C) Arc reach
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) Shielded Mechanical Arc Welding
B) Shielded Metal Arc Welding
C) Solid Metal Arc Welding
D) Stick Metal Arc Work
  • 18. What is SMAW?
A) Purely mechanical process
B) Uses shielding gas
C) Uses tungsten electrode
D) Uses heat of an arc between covered electrode and the work
  • 19. Advantage of SMAW?
A) Fully automated
B) Portable and inexpensive
C) No slag
D) High speed
  • 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) Neither
B) DC only
C) AC or DC
D) AC only
  • 22. What polarity do we weld with?
A) Straight polarity
B) No polarity
C) Alternating ground
D) Reverse polarity
  • 23. Reverse polarity:
A) Ground floats
B) No polarity exists
C) Electrode negative
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Proper ventilation and protective clothing
B) Use small rods and low heat
C) Always weld outside use sitka gloves
D) Avoid using gloves never safety glasses
  • 25. SMAW electrode:
A) TIG tungsten
B) MIG wire
C) Consumable electrode covered with flux
D) Carbon rod
  • 26. Strength of 7018 rod:
A) 18k psi
B) 70k psi
C) 120k psi
D) 40k psi
  • 27. Meaning of 3rd digit in 7018:
A) Coating type
B) Positive polarity rod
C) Rod length
D) Welding position
  • 28. Meaning of 4th digit in 7018:
A) Composition of rod
B) Diameter
C) Arc length
D) Strength
  • 29. Four rod groups:
A) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
B) High carbon, low carbon, stainless, alloy
C) Inert, reactive, passive, active
D) Soft rods, hard rods, hot rods, cold rods
  • 30. DCEP:
A) Direct Current Electrode Positive
B) Direct Coil Energy Pulse
C) Direct Current Elevated Pressure
D) Dual Current Electrode Phase
  • 31. Why put rods in oven?
A) heat for penetration
B) Prevent Bending
C) sterilize
D) Reduce moisture
  • 32. Minimum oven temperature?
A) 500°F
B) 100°F
C) 250°F
D) 175°F
  • 33. E stands for:
A) Energy
B) Edge
C) Earth
D) Electrode
  • 34. Rod lengths:
A) 1–2 feet
B) 20–30 inches
C) 9–18 inches
D) 3–6 inches
  • 35. MR or R:
A) Moisture resistant
B) Metal rod
C) Medium rated
D) Machine ready
  • 36. Base metal we use:
A) Aluminum
B) A36 mild steel
C) Cast iron
D) Stainless steel
  • 37. Light produced in welding:
A) Green infrared
B) Electro violet and ultra red light
C) Blue spectrum only
D) X‑ray emissions
  • 38. Five joint types:
A) Curve, twist, bend, fold, lock
B) Root, face, toe, leg, web
C) Lap, butt, edge, corner, T-joint
D) Arc, gas, flux, rod, plate
  • 39. AWS:
A) American Welding Society
B) American Wire Service
C) Arc Welding System
D) Advanced Weld Standards
  • 40. Heat affected zone:
A) Metal melted completely
B) Joint line
C) Metal altered but not melted
D) Slag-covered area
  • 41. PJP:
A) Partial Joint Penetration
B) Primary Joint Preparation
C) Pressure Joint Process
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) Flat groove
B) Flat fillet
C) Vertical fillet
D) Overhead fillet
  • 44. 2F
A) Vertical groove
B) Flat Fillet
C) Horizontal fillet
D) Horizontal groove
  • 45. 3F
A) Overhead fillet
B) Flat fillet
C) Horizontal groove
D) Vertical fillet
  • 46. 4F:
A) Horizontal fillet
B) Vertical fillet
C) Flat groove
D) Overhead fillet
  • 47. 1G:
A) Vertical groove
B) Flat groove
C) Flat fillet
D) Overhead groove
  • 48. 2G:
A) Horizontal groove
B) Flat groove
C) Vertical groove
D) Horizontal fillet
  • 49. 3G:
A) Overhead groove
B) Vertical groove
C) Horizontal fillet
D) Flat groove
  • 50. 4G:
A) Horizontal fillet
B) Overhead groove
C) Vertical groove
D) Flat groove
  • 51. Weave:
A) Cleaning motion
B) Root buildup
C) Slag brushing
D) Weld bead made with transverse movement
  • 52. No large amount of ______ should be in the weld
A) Mercury
B) Sulphur
C) Oxygen
D) Hydrogen
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