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12-11-25 Welding Midterm Review 2025
Beigesteuert von: 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 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) Length of the rod
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 weld
  • 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 depression in the face of the weld
B) A buildup of slag 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 HAZ boundary
B) Imaginary line through center of weld metal
C) Imaginary line through weld toe
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) Gas bubbles expelled that do not form part of the weld
C) Falling flux 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) 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 stress fracture formed cause metal was too clean
B) A crack in the crater of a weld bead
C) A cold shut
D) A centerline crack
  • 11. What is ductility
A) Ability to stay magnetized
B) Ability to deform without failure
C) Ability to remain cold.
D) Ability to resist rust
  • 12. What is duty cycle?
A) Arc stability rating
B) Machine lifespan over a 10 min period
C) Percentage of time welders operate at rated output
D) Electrode burn rate is working nonstop
  • 13. What is filler metal?
A) Metal added to make a welded joint
B) Metal base plate
C) Distance fusion extends into base metal
D) Flux coating
  • 14. What is depth of fusion?
A) Rod penetration
B) Distance fusion extends into base metal
C) Distance bead width extends
D) Weld height
  • 15. What is penetration?
A) Extent weld metal combines with base metal
B) Bead surface depth
C) Arc reach
D) Slag depth
  • 16. What is deposition rate?
A) Amount of slag produced
B) Length welded per hour
C) Weight of metal deposited per unit time
D) Heat generated
  • 17. What does SMAW stand for?
A) Shielded Metal Arc Welding
B) Shielded Mechanical Arc Welding
C) Stick Metal Arc Work
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) No slag
B) Fully automated
C) High speed
D) Portable and inexpensive
  • 20. Disadvantage of SMAW?
A) It’s slow
B) Requires gas bottles
C) Only works indoors
D) Cannot weld steel
  • 21. 7018 can use:
A) AC only
B) Neither
C) AC or DC
D) DC only
  • 22. What polarity do we weld with?
A) Alternating ground
B) Reverse polarity
C) Straight polarity
D) No polarity
  • 23. Reverse polarity:
A) Electrode negative
B) Ground floats
C) No polarity exists
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Proper ventilation and protective clothing
B) Always weld outside use sitka gloves
C) Avoid using gloves never safety glasses
D) Use small rods and low heat
  • 25. SMAW electrode:
A) Carbon rod
B) MIG wire
C) TIG tungsten
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) Strength
B) Arc length
C) Diameter
D) Composition of rod
  • 29. Four rod groups:
A) Inert, reactive, passive, active
B) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
C) Soft rods, hard rods, hot rods, cold rods
D) High carbon, low carbon, stainless, alloy
  • 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) Reduce moisture
B) heat for penetration
C) Prevent Bending
D) sterilize
  • 32. Minimum oven temperature?
A) 100°F
B) 175°F
C) 500°F
D) 250°F
  • 33. E stands for:
A) Earth
B) Edge
C) Energy
D) Electrode
  • 34. Rod lengths:
A) 3–6 inches
B) 9–18 inches
C) 20–30 inches
D) 1–2 feet
  • 35. MR or R:
A) Metal rod
B) Moisture resistant
C) Machine ready
D) Medium rated
  • 36. Base metal we use:
A) Aluminum
B) A36 mild steel
C) Cast iron
D) Stainless steel
  • 37. Light produced in welding:
A) Electro violet and ultra red light
B) Blue spectrum only
C) Green infrared
D) X‑ray emissions
  • 38. Five joint types:
A) Curve, twist, bend, fold, lock
B) Lap, butt, edge, corner, T-joint
C) Arc, gas, flux, rod, plate
D) Root, face, toe, leg, web
  • 39. AWS:
A) Arc Welding System
B) American Wire Service
C) Advanced Weld Standards
D) American Welding Society
  • 40. Heat affected zone:
A) Joint line
B) Slag-covered area
C) Metal altered but not melted
D) Metal melted completely
  • 41. PJP:
A) Parallel Joint Pass
B) Partial Joint Penetration
C) Primary Joint Preparation
D) Pressure Joint Process
  • 42. CJP:
A) Complete Joint Penetration
B) Controlled Joint Process
C) Central Joint Plane
D) Cut Joint Position
  • 43. 1F:
A) Vertical fillet
B) Flat fillet
C) Flat groove
D) Overhead fillet
  • 44. 2F
A) Horizontal groove
B) Vertical groove
C) Horizontal fillet
D) Flat Fillet
  • 45. 3F
A) Vertical fillet
B) Horizontal groove
C) Overhead fillet
D) Flat fillet
  • 46. 4F:
A) Horizontal fillet
B) Vertical fillet
C) Overhead fillet
D) Flat groove
  • 47. 1G:
A) Flat groove
B) Flat fillet
C) Vertical groove
D) Overhead groove
  • 48. 2G:
A) Horizontal fillet
B) Vertical groove
C) Flat groove
D) Horizontal groove
  • 49. 3G:
A) Horizontal fillet
B) Flat groove
C) Vertical groove
D) Overhead groove
  • 50. 4G:
A) Vertical groove
B) Overhead groove
C) Flat groove
D) Horizontal fillet
  • 51. Weave:
A) Slag brushing
B) Cleaning motion
C) Weld bead made with transverse movement
D) Root buildup
  • 52. No large amount of ______ should be in the weld
A) Sulphur
B) Oxygen
C) Mercury
D) Hydrogen
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