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12-11-25 Welding Midterm Review 2025
Συνεισφορά από: Sandifer
  • 1. What is the base metal?
A) The metal to be welded
B) The flux coating
C) The shielding gas makes sparks
D) The weld bead
  • 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) The distance from the gap between plates and the clamp wire
B) Length of the rod
C) Length of the weld
D) The distance from the electrode to the weld pool
  • 4. What is undercut?
A) A grove melted into the base metal that is a misaligned joint
B) A surface crack
C) A groove melted into base metal left unfilled
D) Extra filler metal
  • 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 center of weld metal
C) Imaginary line through HAZ boundary
D) Imaginary line through top of the bead
  • 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) Arc blow 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) Steel trapped in slag
B) Hot cracks trapped in the weld pool at the end
C) Non-metallic material trapped in weld
D) Undercut failure
  • 9. What is a joint?
A) a welding defect
B) Location where two or more members are joined
C) The end of the metal piece that is welded first.
D) filler metal
  • 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 centerline crack
D) A cold shut
  • 11. What is ductility
A) Ability to remain cold.
B) Ability to stay magnetized
C) Ability to deform without failure
D) Ability to resist rust
  • 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) Flux coating
C) Distance fusion extends into base metal
D) Metal base plate
  • 14. What is depth of fusion?
A) Distance bead width extends
B) Weld height
C) Rod penetration
D) Distance fusion extends into base metal
  • 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) Shielded Mechanical Arc Welding
B) Stick Metal Arc Work
C) Solid Metal Arc Welding
D) Shielded Metal Arc Welding
  • 18. What is SMAW?
A) Uses heat of an arc between covered electrode and the work
B) Purely mechanical process
C) Uses tungsten electrode
D) Uses shielding gas
  • 19. Advantage of SMAW?
A) High speed
B) Fully automated
C) No slag
D) Portable and inexpensive
  • 20. Disadvantage of SMAW?
A) Only works indoors
B) Cannot weld steel
C) It’s slow
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) No polarity
B) Alternating ground
C) Reverse polarity
D) Straight 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) Proper ventilation and protective clothing
B) Always weld outside use sitka gloves
C) Use small rods and low heat
D) Avoid using gloves never safety glasses
  • 25. SMAW electrode:
A) MIG wire
B) TIG tungsten
C) Carbon rod
D) Consumable electrode covered with flux
  • 26. Strength of 7018 rod:
A) 120k psi
B) 70k psi
C) 40k psi
D) 18k psi
  • 27. Meaning of 3rd digit in 7018:
A) Welding position
B) Positive polarity rod
C) Rod length
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Arc length
B) Diameter
C) Composition of rod
D) Strength
  • 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 Coil Energy Pulse
B) Direct Current Electrode Positive
C) Direct Current Elevated Pressure
D) Dual Current Electrode Phase
  • 31. Why put rods in oven?
A) Reduce moisture
B) Prevent Bending
C) heat for penetration
D) sterilize
  • 32. Minimum oven temperature?
A) 250°F
B) 175°F
C) 100°F
D) 500°F
  • 33. E stands for:
A) Energy
B) Electrode
C) Earth
D) Edge
  • 34. Rod lengths:
A) 1–2 feet
B) 3–6 inches
C) 9–18 inches
D) 20–30 inches
  • 35. MR or R:
A) Metal rod
B) Machine ready
C) Medium rated
D) Moisture resistant
  • 36. Base metal we use:
A) A36 mild steel
B) Cast iron
C) Stainless steel
D) Aluminum
  • 37. Light produced in welding:
A) X‑ray emissions
B) Electro violet and ultra red light
C) Blue spectrum only
D) Green infrared
  • 38. Five joint types:
A) Arc, gas, flux, rod, plate
B) Curve, twist, bend, fold, lock
C) Root, face, toe, leg, web
D) Lap, butt, edge, corner, T-joint
  • 39. AWS:
A) American Welding Society
B) American Wire Service
C) Advanced Weld Standards
D) Arc Welding System
  • 40. Heat affected zone:
A) Metal melted completely
B) Joint line
C) Slag-covered area
D) Metal altered but not melted
  • 41. PJP:
A) Parallel Joint Pass
B) Pressure Joint Process
C) Partial Joint Penetration
D) Primary Joint Preparation
  • 42. CJP:
A) Central Joint Plane
B) Cut Joint Position
C) Controlled Joint Process
D) Complete Joint Penetration
  • 43. 1F:
A) Flat fillet
B) Flat groove
C) Overhead fillet
D) Vertical fillet
  • 44. 2F
A) Horizontal groove
B) Flat Fillet
C) Vertical groove
D) Horizontal fillet
  • 45. 3F
A) Overhead fillet
B) Vertical fillet
C) Horizontal groove
D) Flat fillet
  • 46. 4F:
A) Horizontal fillet
B) Flat groove
C) Overhead fillet
D) Vertical fillet
  • 47. 1G:
A) Flat fillet
B) Vertical groove
C) Flat groove
D) Overhead groove
  • 48. 2G:
A) Flat groove
B) Horizontal fillet
C) Vertical groove
D) Horizontal groove
  • 49. 3G:
A) Flat groove
B) Overhead groove
C) Horizontal fillet
D) Vertical groove
  • 50. 4G:
A) Horizontal fillet
B) Overhead groove
C) Flat groove
D) Vertical groove
  • 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) Mercury
B) Hydrogen
C) Oxygen
D) Sulphur
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