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12-11-25 Welding Midterm Review 2025
Beigesteuert von: Sandifer
  • 1. What is the base metal?
A) The weld bead
B) The flux coating
C) The metal to be welded
D) The shielding gas makes sparks
  • 2. What is an arc?
A) Light from welding
B) A type of electrode
C) A joint type that lets light fly around everywhere
D) Flow of electricity through a gaseous space or air gap
  • 3. What is arc length?
A) The distance from the electrode to the weld pool
B) Length of the rod
C) Length of the weld
D) The distance from the gap between plates and the clamp wire
  • 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 porosity pocket in the face of the weld
D) A melted rod tip 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 weld toe
D) Imaginary line through center of weld metal
  • 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) Falling flux expelled that do not form part of the weld
D) Arc blow expelled that do not form part of the weld
  • 8. What is slag inclusion?
A) Undercut failure
B) Steel trapped in slag
C) Hot cracks trapped in the weld pool at the end
D) Non-metallic material trapped in weld
  • 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 crack in the crater of a weld bead
B) A stress fracture formed cause metal was too clean
C) A cold shut
D) A centerline crack
  • 11. What is ductility
A) Ability to resist rust
B) Ability to deform without failure
C) Ability to stay magnetized
D) Ability to remain cold.
  • 12. What is duty cycle?
A) Electrode burn rate is working nonstop
B) Arc stability rating
C) Percentage of time welders operate at rated output
D) Machine lifespan over a 10 min period
  • 13. What is filler metal?
A) Flux coating
B) Metal added to make a welded joint
C) Distance fusion extends into base metal
D) Metal base plate
  • 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) Bead surface depth
B) Slag depth
C) Extent weld metal combines with base metal
D) Arc reach
  • 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) Solid Metal Arc Welding
B) Shielded Mechanical Arc Welding
C) Shielded Metal Arc Welding
D) Stick Metal Arc Work
  • 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) Portable and inexpensive
B) No slag
C) Fully automated
D) High speed
  • 20. Disadvantage of SMAW?
A) Only works indoors
B) Cannot weld steel
C) Requires gas bottles
D) It’s slow
  • 21. 7018 can use:
A) DC only
B) AC only
C) Neither
D) AC or DC
  • 22. What polarity do we weld with?
A) Reverse polarity
B) No polarity
C) Alternating ground
D) Straight polarity
  • 23. Reverse polarity:
A) No polarity exists
B) Electrode is positive, ground negative
C) Ground floats
D) Electrode negative
  • 24. Two safety points:
A) Avoid using gloves never safety glasses
B) Proper ventilation and protective clothing
C) Always weld outside use sitka gloves
D) Use small rods and low heat
  • 25. SMAW electrode:
A) MIG wire
B) TIG tungsten
C) Consumable electrode covered with flux
D) Carbon rod
  • 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) Rod length
B) Welding position
C) Positive polarity rod
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Arc length
B) Diameter
C) Strength
D) Composition of rod
  • 29. Four rod groups:
A) Inert, reactive, passive, active
B) Soft rods, hard rods, hot rods, cold rods
C) High carbon, low carbon, stainless, alloy
D) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
  • 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) sterilize
B) heat for penetration
C) Reduce moisture
D) Prevent Bending
  • 32. Minimum oven temperature?
A) 100°F
B) 250°F
C) 175°F
D) 500°F
  • 33. E stands for:
A) Electrode
B) Edge
C) Earth
D) Energy
  • 34. Rod lengths:
A) 9–18 inches
B) 1–2 feet
C) 20–30 inches
D) 3–6 inches
  • 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) Stainless steel
C) Aluminum
D) A36 mild steel
  • 37. Light produced in welding:
A) Blue spectrum only
B) X‑ray emissions
C) Green infrared
D) Electro violet and ultra red light
  • 38. Five joint types:
A) Arc, gas, flux, rod, plate
B) Lap, butt, edge, corner, T-joint
C) Curve, twist, bend, fold, lock
D) Root, face, toe, leg, web
  • 39. AWS:
A) American Wire Service
B) Advanced Weld Standards
C) Arc Welding System
D) American Welding Society
  • 40. Heat affected zone:
A) Metal melted completely
B) Metal altered but not melted
C) Slag-covered area
D) Joint line
  • 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) Overhead fillet
B) Vertical fillet
C) Flat groove
D) Flat fillet
  • 44. 2F
A) Horizontal groove
B) Vertical groove
C) Flat Fillet
D) Horizontal fillet
  • 45. 3F
A) Overhead fillet
B) Horizontal groove
C) Flat fillet
D) Vertical fillet
  • 46. 4F:
A) Vertical fillet
B) Flat groove
C) Overhead fillet
D) Horizontal fillet
  • 47. 1G:
A) Overhead groove
B) Flat fillet
C) Vertical groove
D) Flat groove
  • 48. 2G:
A) Horizontal fillet
B) Vertical groove
C) Flat groove
D) Horizontal groove
  • 49. 3G:
A) Flat groove
B) Vertical groove
C) Overhead groove
D) Horizontal fillet
  • 50. 4G:
A) Horizontal fillet
B) Flat groove
C) Overhead groove
D) Vertical groove
  • 51. Weave:
A) Slag brushing
B) Cleaning motion
C) Root buildup
D) Weld bead made with transverse movement
  • 52. No large amount of ______ should be in the weld
A) Sulphur
B) Mercury
C) Hydrogen
D) Oxygen
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