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12-11-25 Welding Midterm Review 2025
Συνεισφορά από: Sandifer
  • 1. What is the base metal?
A) The shielding gas makes sparks
B) The weld bead
C) The flux coating
D) The metal to be welded
  • 2. What is an arc?
A) Light from welding
B) A joint type that lets light fly around everywhere
C) A type of electrode
D) Flow of electricity through a gaseous space or air gap
  • 3. What is arc length?
A) Length of the rod
B) Length of the weld
C) The distance from the gap between plates and the clamp wire
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 porosity pocket in the face of the weld
B) A depression in the face of the weld
C) A buildup of slag 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 HAZ boundary
B) Imaginary line through top of the bead
C) Imaginary line through weld toe
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) Arc blow 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) 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) The end of the metal piece that is welded first.
B) filler metal
C) a welding defect
D) Location where two or more members are joined
  • 10. What is a crater crack?
A) A cold shut
B) A centerline crack
C) A crack in the crater of a weld bead
D) A stress fracture formed cause metal was too clean
  • 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) Percentage of time welders operate at rated output
B) Electrode burn rate is working nonstop
C) Machine lifespan over a 10 min period
D) Arc stability rating
  • 13. What is filler metal?
A) Metal added to make a welded joint
B) Metal base plate
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) Weld height
D) Rod penetration
  • 15. What is penetration?
A) Extent weld metal combines with base metal
B) Arc reach
C) Bead surface depth
D) Slag depth
  • 16. What is deposition rate?
A) Length welded per hour
B) Heat generated
C) Amount of slag produced
D) Weight of metal deposited per unit time
  • 17. What does SMAW stand for?
A) Shielded Mechanical Arc Welding
B) Solid Metal Arc Welding
C) Shielded Metal Arc Welding
D) Stick Metal Arc Work
  • 18. What is SMAW?
A) Uses shielding gas
B) Purely mechanical process
C) Uses tungsten electrode
D) Uses heat of an arc between covered electrode and the work
  • 19. Advantage of SMAW?
A) High speed
B) No slag
C) Fully automated
D) Portable and inexpensive
  • 20. Disadvantage of SMAW?
A) It’s slow
B) Only works indoors
C) Cannot weld steel
D) Requires gas bottles
  • 21. 7018 can use:
A) DC only
B) Neither
C) AC or DC
D) AC only
  • 22. What polarity do we weld with?
A) Reverse polarity
B) Alternating ground
C) No polarity
D) Straight polarity
  • 23. Reverse polarity:
A) No polarity exists
B) Electrode negative
C) Ground floats
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Use small rods and low heat
B) Avoid using gloves never safety glasses
C) Proper ventilation and protective clothing
D) Always weld outside use sitka gloves
  • 25. SMAW electrode:
A) Consumable electrode covered with flux
B) TIG tungsten
C) MIG wire
D) Carbon rod
  • 26. Strength of 7018 rod:
A) 40k psi
B) 120k psi
C) 18k psi
D) 70k psi
  • 27. Meaning of 3rd digit in 7018:
A) Rod length
B) Positive polarity rod
C) Welding position
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Composition of rod
B) Arc length
C) Diameter
D) Strength
  • 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) Direct Coil Energy Pulse
B) Dual Current Electrode Phase
C) Direct Current Electrode Positive
D) Direct Current Elevated Pressure
  • 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) 175°F
C) 500°F
D) 100°F
  • 33. E stands for:
A) Earth
B) Electrode
C) Edge
D) Energy
  • 34. Rod lengths:
A) 9–18 inches
B) 20–30 inches
C) 1–2 feet
D) 3–6 inches
  • 35. MR or R:
A) Moisture resistant
B) Medium rated
C) Machine ready
D) Metal rod
  • 36. Base metal we use:
A) Stainless steel
B) A36 mild steel
C) Aluminum
D) Cast iron
  • 37. Light produced in welding:
A) Green infrared
B) Electro violet and ultra red light
C) Blue spectrum only
D) X‑ray emissions
  • 38. Five joint types:
A) Root, face, toe, leg, web
B) Curve, twist, bend, fold, lock
C) Arc, gas, flux, rod, plate
D) Lap, butt, edge, corner, T-joint
  • 39. AWS:
A) Arc Welding System
B) American Welding Society
C) American Wire Service
D) Advanced Weld Standards
  • 40. Heat affected zone:
A) Joint line
B) Metal melted completely
C) Slag-covered area
D) Metal altered but not melted
  • 41. PJP:
A) Pressure Joint Process
B) Primary Joint Preparation
C) Partial Joint Penetration
D) Parallel Joint Pass
  • 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 fillet
C) Horizontal groove
D) Vertical groove
  • 45. 3F
A) Overhead fillet
B) Horizontal groove
C) Vertical fillet
D) Flat fillet
  • 46. 4F:
A) Overhead fillet
B) Horizontal fillet
C) Flat groove
D) Vertical fillet
  • 47. 1G:
A) Vertical groove
B) Overhead groove
C) Flat groove
D) Flat fillet
  • 48. 2G:
A) Vertical groove
B) Flat groove
C) Horizontal groove
D) Horizontal fillet
  • 49. 3G:
A) Horizontal fillet
B) Flat groove
C) Overhead groove
D) Vertical groove
  • 50. 4G:
A) Horizontal fillet
B) Overhead groove
C) Flat groove
D) Vertical groove
  • 51. Weave:
A) Root buildup
B) Weld bead made with transverse movement
C) Cleaning motion
D) Slag brushing
  • 52. No large amount of ______ should be in the weld
A) Oxygen
B) Hydrogen
C) Mercury
D) Sulphur
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