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