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12-11-25 Welding Midterm Review 2025
Contribuição de: Sandifer
  • 1. What is the base metal?
A) The flux coating
B) The shielding gas makes sparks
C) The weld bead
D) The metal to be welded
  • 2. What is an arc?
A) A type of electrode
B) Light from welding
C) Flow of electricity through a gaseous space or air gap
D) A joint type that lets light fly around everywhere
  • 3. What is arc length?
A) The distance from the electrode to the weld pool
B) Length of the weld
C) The distance from the gap between plates and the clamp wire
D) Length of the rod
  • 4. What is undercut?
A) A surface crack
B) A groove melted into base metal left unfilled
C) Extra filler metal
D) A grove melted into the base metal that is a misaligned joint
  • 5. What is a crater?
A) A buildup of slag in the face of the weld
B) A depression in the face of the weld
C) A melted rod tip 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 weld toe
B) Imaginary line through HAZ boundary
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) Falling flux expelled that do not form part of the weld
C) Gas bubbles expelled that do not form part of the weld
D) Metal particles 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) a welding defect
B) filler metal
C) Location where two or more members are joined
D) The end of the metal piece that is welded first.
  • 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 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) 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 base plate
B) Distance fusion extends into base metal
C) Metal added to make a welded joint
D) Flux coating
  • 14. What is depth of fusion?
A) Weld height
B) Distance fusion extends into base metal
C) Rod penetration
D) Distance bead width extends
  • 15. What is penetration?
A) Arc reach
B) Bead surface depth
C) Slag depth
D) Extent weld metal combines with base metal
  • 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 Metal Arc Welding
C) Shielded Mechanical Arc Welding
D) Stick Metal Arc Work
  • 18. What is SMAW?
A) Uses tungsten electrode
B) Uses shielding gas
C) Purely mechanical process
D) Uses heat of an arc between covered electrode and the work
  • 19. Advantage of SMAW?
A) No slag
B) High speed
C) Fully automated
D) Portable and inexpensive
  • 20. Disadvantage of SMAW?
A) It’s slow
B) Cannot weld steel
C) Only works indoors
D) Requires gas bottles
  • 21. 7018 can use:
A) AC only
B) AC or DC
C) Neither
D) DC 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) Electrode negative
C) Ground floats
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Use small rods and low heat
B) Always weld outside use sitka gloves
C) Proper ventilation and protective clothing
D) Avoid using gloves never safety glasses
  • 25. SMAW electrode:
A) Consumable electrode covered with flux
B) TIG tungsten
C) MIG wire
D) Carbon rod
  • 26. Strength of 7018 rod:
A) 70k psi
B) 40k psi
C) 120k psi
D) 18k psi
  • 27. Meaning of 3rd digit in 7018:
A) Welding position
B) Coating type
C) Rod length
D) Positive polarity rod
  • 28. Meaning of 4th digit in 7018:
A) Strength
B) Diameter
C) Composition of rod
D) Arc length
  • 29. Four rod groups:
A) High carbon, low carbon, stainless, alloy
B) Soft rods, hard rods, hot rods, cold rods
C) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
D) Inert, reactive, passive, active
  • 30. DCEP:
A) Direct Current Elevated Pressure
B) Dual Current Electrode Phase
C) Direct Coil Energy Pulse
D) Direct Current Electrode Positive
  • 31. Why put rods in oven?
A) Reduce moisture
B) heat for penetration
C) sterilize
D) Prevent Bending
  • 32. Minimum oven temperature?
A) 100°F
B) 500°F
C) 250°F
D) 175°F
  • 33. E stands for:
A) Edge
B) Earth
C) Energy
D) Electrode
  • 34. Rod lengths:
A) 1–2 feet
B) 3–6 inches
C) 20–30 inches
D) 9–18 inches
  • 35. MR or R:
A) Metal rod
B) Machine ready
C) Medium rated
D) Moisture resistant
  • 36. Base metal we use:
A) Stainless steel
B) Aluminum
C) Cast iron
D) A36 mild steel
  • 37. Light produced in welding:
A) X‑ray emissions
B) Green infrared
C) Electro violet and ultra red light
D) Blue spectrum only
  • 38. Five joint types:
A) Lap, butt, edge, corner, T-joint
B) Arc, gas, flux, rod, plate
C) Curve, twist, bend, fold, lock
D) Root, face, toe, leg, web
  • 39. AWS:
A) American Wire Service
B) Arc Welding System
C) Advanced Weld Standards
D) American Welding Society
  • 40. Heat affected zone:
A) Slag-covered area
B) Metal altered but not melted
C) Metal melted completely
D) Joint line
  • 41. PJP:
A) Primary Joint Preparation
B) Pressure Joint Process
C) Parallel Joint Pass
D) Partial Joint Penetration
  • 42. CJP:
A) Cut Joint Position
B) Complete Joint Penetration
C) Central Joint Plane
D) Controlled Joint Process
  • 43. 1F:
A) Overhead fillet
B) Flat fillet
C) Vertical fillet
D) Flat groove
  • 44. 2F
A) Horizontal groove
B) Vertical groove
C) Horizontal fillet
D) Flat Fillet
  • 45. 3F
A) Vertical fillet
B) Horizontal groove
C) Flat fillet
D) Overhead 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 groove
B) Vertical groove
C) Flat groove
D) Horizontal fillet
  • 49. 3G:
A) Horizontal fillet
B) Vertical groove
C) Overhead groove
D) Flat groove
  • 50. 4G:
A) Flat groove
B) Vertical groove
C) Overhead groove
D) Horizontal fillet
  • 51. Weave:
A) Cleaning motion
B) Root buildup
C) Slag brushing
D) Weld bead made with transverse movement
  • 52. No large amount of ______ should be in the weld
A) Oxygen
B) Sulphur
C) Hydrogen
D) Mercury
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