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12-11-25 Welding Midterm Review 2025
Contribué par: Sandifer
  • 1. What is the base metal?
A) The metal to be welded
B) The weld bead
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) 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) 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) A surface crack
B) A grove melted into the base metal that is a misaligned joint
C) Extra filler metal
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 melted rod tip in the face of the weld
C) A buildup of slag 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) Arc blow expelled that do not form part of the weld
B) Metal particles expelled that do not form part of the weld
C) Gas bubbles 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) Non-metallic material trapped in weld
D) Steel trapped in slag
  • 9. What is a joint?
A) filler metal
B) Location where two or more members are joined
C) The end of the metal piece that is welded first.
D) a welding defect
  • 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 resist rust
B) Ability to deform without failure
C) Ability to remain cold.
D) Ability to stay magnetized
  • 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) Distance fusion extends into base metal
C) Metal base plate
D) Flux coating
  • 14. What is depth of fusion?
A) Rod penetration
B) Distance fusion extends into base metal
C) Weld height
D) Distance bead width extends
  • 15. What is penetration?
A) Extent weld metal combines with base metal
B) Slag depth
C) Bead surface depth
D) Arc reach
  • 16. What is deposition rate?
A) Weight of metal deposited per unit time
B) Amount of slag produced
C) Heat generated
D) Length welded per hour
  • 17. What does SMAW stand for?
A) Shielded Metal Arc Welding
B) Stick Metal Arc Work
C) Shielded Mechanical Arc Welding
D) Solid Metal Arc Welding
  • 18. What is SMAW?
A) Uses shielding gas
B) Purely mechanical process
C) Uses heat of an arc between covered electrode and the work
D) Uses tungsten electrode
  • 19. Advantage of SMAW?
A) Fully automated
B) High speed
C) No slag
D) Portable and inexpensive
  • 20. Disadvantage of SMAW?
A) Cannot weld steel
B) Requires gas bottles
C) It’s slow
D) Only works indoors
  • 21. 7018 can use:
A) Neither
B) AC or DC
C) DC only
D) AC only
  • 22. What polarity do we weld with?
A) No polarity
B) Reverse polarity
C) Alternating ground
D) Straight polarity
  • 23. Reverse polarity:
A) No polarity exists
B) Ground floats
C) Electrode is positive, ground negative
D) Electrode negative
  • 24. Two safety points:
A) Always weld outside use sitka gloves
B) Avoid using gloves never safety glasses
C) Proper ventilation and protective clothing
D) Use small rods and low heat
  • 25. SMAW electrode:
A) MIG wire
B) TIG tungsten
C) Carbon rod
D) Consumable electrode covered with flux
  • 26. Strength of 7018 rod:
A) 40k psi
B) 120k psi
C) 70k psi
D) 18k psi
  • 27. Meaning of 3rd digit in 7018:
A) Rod length
B) Welding position
C) Positive polarity rod
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Arc length
B) Composition of rod
C) Diameter
D) Strength
  • 29. Four rod groups:
A) High carbon, low carbon, stainless, alloy
B) Inert, reactive, passive, active
C) Soft rods, hard rods, hot rods, cold rods
D) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
  • 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) sterilize
B) Prevent Bending
C) heat for penetration
D) Reduce moisture
  • 32. Minimum oven temperature?
A) 500°F
B) 250°F
C) 175°F
D) 100°F
  • 33. E stands for:
A) Electrode
B) Energy
C) Earth
D) Edge
  • 34. Rod lengths:
A) 3–6 inches
B) 9–18 inches
C) 20–30 inches
D) 1–2 feet
  • 35. MR or R:
A) Machine ready
B) Medium rated
C) Moisture resistant
D) Metal rod
  • 36. Base metal we use:
A) Cast iron
B) A36 mild steel
C) Aluminum
D) Stainless steel
  • 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) Curve, twist, bend, fold, lock
B) Lap, butt, edge, corner, T-joint
C) Root, face, toe, leg, web
D) Arc, gas, flux, rod, plate
  • 39. AWS:
A) American Wire Service
B) American Welding Society
C) Arc Welding System
D) Advanced Weld Standards
  • 40. Heat affected zone:
A) Metal altered but not melted
B) Joint line
C) Slag-covered area
D) Metal melted completely
  • 41. PJP:
A) Partial Joint Penetration
B) Primary Joint Preparation
C) Parallel Joint Pass
D) Pressure Joint Process
  • 42. CJP:
A) Cut Joint Position
B) Central Joint Plane
C) Controlled Joint Process
D) Complete Joint Penetration
  • 43. 1F:
A) Vertical fillet
B) Flat groove
C) Flat fillet
D) Overhead fillet
  • 44. 2F
A) Horizontal groove
B) Vertical groove
C) Flat Fillet
D) Horizontal fillet
  • 45. 3F
A) Horizontal groove
B) Vertical fillet
C) Overhead fillet
D) Flat fillet
  • 46. 4F:
A) Flat groove
B) Overhead fillet
C) Vertical fillet
D) Horizontal fillet
  • 47. 1G:
A) Vertical groove
B) Flat groove
C) Overhead groove
D) Flat fillet
  • 48. 2G:
A) Horizontal groove
B) Flat groove
C) Horizontal fillet
D) Vertical groove
  • 49. 3G:
A) Flat groove
B) Vertical groove
C) Horizontal fillet
D) Overhead groove
  • 50. 4G:
A) Horizontal fillet
B) Overhead groove
C) Vertical groove
D) Flat groove
  • 51. Weave:
A) Cleaning motion
B) Slag brushing
C) Root buildup
D) Weld bead made with transverse movement
  • 52. No large amount of ______ should be in the weld
A) Oxygen
B) Hydrogen
C) Sulphur
D) Mercury
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