12-11-25 Welding Midterm Review 2025
  • 1. What is the base metal?
A) The weld bead
B) The shielding gas makes sparks
C) The flux coating
D) The metal to be welded
  • 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) Light from welding
D) A type of electrode
  • 3. What is arc length?
A) Length of the rod
B) The distance from the gap between plates and the clamp wire
C) Length of the weld
D) The distance from the electrode to the weld pool
  • 4. What is undercut?
A) Extra filler metal
B) A groove melted into base metal left unfilled
C) A grove melted into the base metal that is a misaligned joint
D) A surface crack
  • 5. What is a crater?
A) A depression in the face of the weld
B) A melted rod tip in the face of the weld
C) A porosity pocket in the face of the weld
D) A buildup of slag 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 top of the bead
D) Imaginary line through center of weld metal
  • 7. What is spatter?
A) Metal particles 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) Falling flux expelled that do not form part of the weld
  • 8. What is slag inclusion?
A) Steel trapped in slag
B) Undercut failure
C) Hot cracks trapped in the weld pool at the end
D) Non-metallic material trapped in weld
  • 9. What is a joint?
A) a welding defect
B) The end of the metal piece that is welded first.
C) Location where two or more members are joined
D) filler metal
  • 10. What is a crater crack?
A) A stress fracture formed cause metal was too clean
B) A centerline crack
C) A cold shut
D) A crack in the crater of a weld bead
  • 11. What is ductility
A) Ability to remain cold.
B) Ability to resist rust
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) Electrode burn rate is working nonstop
C) Percentage of time welders operate at rated output
D) Arc stability rating
  • 13. What is filler metal?
A) Metal base plate
B) Metal added to make a welded joint
C) Flux coating
D) Distance fusion extends into base metal
  • 14. What is depth of fusion?
A) Weld height
B) Distance fusion extends into base metal
C) Rod penetration
D) Distance bead width extends
  • 15. What is penetration?
A) Extent weld metal combines with base metal
B) Bead surface depth
C) Arc reach
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) Shielded Metal Arc Welding
B) Shielded Mechanical 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) Portable and inexpensive
B) High speed
C) Fully automated
D) No slag
  • 20. Disadvantage of SMAW?
A) Requires gas bottles
B) Only works indoors
C) It’s slow
D) Cannot weld steel
  • 21. 7018 can use:
A) AC or DC
B) AC only
C) Neither
D) DC only
  • 22. What polarity do we weld with?
A) Straight polarity
B) Reverse polarity
C) No polarity
D) Alternating ground
  • 23. Reverse polarity:
A) No polarity exists
B) Electrode negative
C) Ground floats
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) MIG wire
B) TIG tungsten
C) Carbon rod
D) Consumable electrode covered with flux
  • 26. Strength of 7018 rod:
A) 120k psi
B) 70k psi
C) 18k psi
D) 40k psi
  • 27. Meaning of 3rd digit in 7018:
A) Coating type
B) Welding position
C) Rod length
D) Positive polarity rod
  • 28. Meaning of 4th digit in 7018:
A) Diameter
B) Arc length
C) Composition of rod
D) Strength
  • 29. Four rod groups:
A) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
B) Inert, reactive, passive, active
C) Soft rods, hard rods, hot rods, cold rods
D) High carbon, low carbon, stainless, alloy
  • 30. DCEP:
A) Dual Current Electrode Phase
B) Direct Coil Energy Pulse
C) Direct Current Elevated Pressure
D) Direct Current Electrode Positive
  • 31. Why put rods in oven?
A) sterilize
B) Reduce moisture
C) heat for penetration
D) Prevent Bending
  • 32. Minimum oven temperature?
A) 100°F
B) 250°F
C) 500°F
D) 175°F
  • 33. E stands for:
A) Edge
B) Earth
C) Energy
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) Machine ready
B) Medium rated
C) Metal rod
D) Moisture resistant
  • 36. Base metal we use:
A) Stainless steel
B) Aluminum
C) Cast iron
D) A36 mild steel
  • 37. Light produced in welding:
A) X‑ray emissions
B) Green infrared
C) Blue spectrum only
D) Electro violet and ultra red light
  • 38. Five joint types:
A) Arc, gas, flux, rod, plate
B) Root, face, toe, leg, web
C) Lap, butt, edge, corner, T-joint
D) Curve, twist, bend, fold, lock
  • 39. AWS:
A) American Welding Society
B) American Wire Service
C) Arc Welding System
D) Advanced Weld Standards
  • 40. Heat affected zone:
A) Joint line
B) Metal melted completely
C) Metal altered but not melted
D) Slag-covered area
  • 41. PJP:
A) Partial Joint Penetration
B) Pressure Joint Process
C) Primary Joint Preparation
D) Parallel Joint Pass
  • 42. CJP:
A) Central Joint Plane
B) Controlled Joint Process
C) Cut Joint Position
D) Complete Joint Penetration
  • 43. 1F:
A) Vertical fillet
B) Flat groove
C) Overhead fillet
D) Flat fillet
  • 44. 2F
A) Vertical groove
B) Horizontal groove
C) Flat Fillet
D) Horizontal fillet
  • 45. 3F
A) Horizontal groove
B) Flat fillet
C) Overhead fillet
D) Vertical fillet
  • 46. 4F:
A) Horizontal fillet
B) Overhead fillet
C) Flat groove
D) Vertical fillet
  • 47. 1G:
A) Flat groove
B) Flat fillet
C) Overhead groove
D) Vertical groove
  • 48. 2G:
A) Flat groove
B) Horizontal fillet
C) Horizontal groove
D) Vertical groove
  • 49. 3G:
A) Overhead groove
B) Horizontal fillet
C) Flat groove
D) Vertical groove
  • 50. 4G:
A) Overhead groove
B) Vertical groove
C) Horizontal fillet
D) Flat groove
  • 51. Weave:
A) Weld bead made with transverse movement
B) Cleaning motion
C) Root buildup
D) Slag brushing
  • 52. No large amount of ______ should be in the weld
A) Hydrogen
B) Mercury
C) Oxygen
D) Sulphur
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