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12-11-25 Welding Midterm Review 2025
Con il contributo di: Sandifer
  • 1. What is the base metal?
A) The metal to be welded
B) The flux coating
C) The weld bead
D) The shielding gas makes sparks
  • 2. What is an arc?
A) Flow of electricity through a gaseous space or air gap
B) Light from welding
C) A joint type that lets light fly around everywhere
D) A type of electrode
  • 3. What is arc length?
A) Length of the weld
B) The distance from the electrode to the weld pool
C) The distance from the gap between plates and the clamp wire
D) Length of the rod
  • 4. What is undercut?
A) A groove melted into base metal left unfilled
B) Extra filler metal
C) A grove melted into the base metal that is a misaligned joint
D) A surface crack
  • 5. What is a crater?
A) A melted rod tip in the face of the weld
B) A porosity pocket in the face of the weld
C) A buildup of slag 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 weld toe
B) Imaginary line through center of weld metal
C) Imaginary line through top of the bead
D) Imaginary line through HAZ boundary
  • 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) Metal particles 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) Non-metallic material trapped in weld
D) Hot cracks trapped in the weld pool at the end
  • 9. What is a joint?
A) The end of the metal piece that is welded first.
B) filler metal
C) Location where two or more members are joined
D) a welding defect
  • 10. What is a crater crack?
A) A cold shut
B) A stress fracture formed cause metal was too clean
C) A centerline crack
D) A crack in the crater of a weld bead
  • 11. What is ductility
A) Ability to deform without failure
B) Ability to stay magnetized
C) Ability to resist rust
D) Ability to remain cold.
  • 12. What is duty cycle?
A) Arc stability rating
B) Percentage of time welders operate at rated output
C) Machine lifespan over a 10 min period
D) Electrode burn rate is working nonstop
  • 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) Distance bead width extends
D) Rod penetration
  • 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) Length welded per hour
B) Heat generated
C) Weight of metal deposited per unit time
D) Amount of slag produced
  • 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) Purely mechanical process
C) Uses shielding gas
D) Uses tungsten electrode
  • 19. Advantage of SMAW?
A) No slag
B) Portable and inexpensive
C) High speed
D) Fully automated
  • 20. Disadvantage of SMAW?
A) Only works indoors
B) It’s slow
C) Cannot weld steel
D) Requires gas bottles
  • 21. 7018 can use:
A) AC only
B) Neither
C) DC only
D) AC or DC
  • 22. What polarity do we weld with?
A) Alternating ground
B) Straight polarity
C) Reverse polarity
D) No 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) Use small rods and low heat
B) Always weld outside use sitka gloves
C) Avoid using gloves never safety glasses
D) Proper ventilation and protective clothing
  • 25. SMAW electrode:
A) TIG tungsten
B) Consumable electrode covered with flux
C) MIG wire
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) Welding position
B) Rod length
C) Positive polarity rod
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Arc length
B) Strength
C) Diameter
D) Composition of rod
  • 29. Four rod groups:
A) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
B) High carbon, low carbon, stainless, alloy
C) Soft rods, hard rods, hot rods, cold rods
D) Inert, reactive, passive, active
  • 30. DCEP:
A) Dual Current Electrode Phase
B) Direct Current Elevated Pressure
C) Direct Coil Energy Pulse
D) Direct Current Electrode Positive
  • 31. Why put rods in oven?
A) Prevent Bending
B) sterilize
C) Reduce moisture
D) heat for penetration
  • 32. Minimum oven temperature?
A) 500°F
B) 250°F
C) 175°F
D) 100°F
  • 33. E stands for:
A) Energy
B) Earth
C) Electrode
D) Edge
  • 34. Rod lengths:
A) 20–30 inches
B) 1–2 feet
C) 9–18 inches
D) 3–6 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) A36 mild steel
C) Cast iron
D) Aluminum
  • 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) Lap, butt, edge, corner, T-joint
B) Arc, gas, flux, rod, plate
C) Root, face, toe, leg, web
D) Curve, twist, bend, fold, lock
  • 39. AWS:
A) American Welding Society
B) Arc Welding System
C) American Wire Service
D) Advanced Weld Standards
  • 40. Heat affected zone:
A) Slag-covered area
B) Metal melted completely
C) Joint line
D) Metal altered but not melted
  • 41. PJP:
A) Parallel Joint Pass
B) Primary Joint Preparation
C) Pressure Joint Process
D) Partial Joint Penetration
  • 42. CJP:
A) Controlled Joint Process
B) Complete Joint Penetration
C) Central Joint Plane
D) Cut Joint Position
  • 43. 1F:
A) Overhead fillet
B) Flat fillet
C) Vertical fillet
D) Flat groove
  • 44. 2F
A) Flat Fillet
B) Horizontal groove
C) Horizontal fillet
D) Vertical groove
  • 45. 3F
A) Flat fillet
B) Overhead fillet
C) Vertical fillet
D) Horizontal groove
  • 46. 4F:
A) Vertical fillet
B) Overhead fillet
C) Flat groove
D) Horizontal fillet
  • 47. 1G:
A) Flat fillet
B) Flat groove
C) Overhead groove
D) Vertical groove
  • 48. 2G:
A) Horizontal groove
B) Flat groove
C) Horizontal fillet
D) Vertical groove
  • 49. 3G:
A) Horizontal fillet
B) Vertical groove
C) Overhead groove
D) Flat groove
  • 50. 4G:
A) Flat groove
B) Overhead groove
C) Vertical groove
D) Horizontal fillet
  • 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) Oxygen
B) Sulphur
C) Hydrogen
D) Mercury
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