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12-11-25 Welding Midterm Review 2025
Con il contributo di: 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) Flow of electricity through a gaseous space or air gap
B) A joint type that lets light fly around everywhere
C) A type of electrode
D) Light from welding
  • 3. What is arc length?
A) The distance from the electrode to the weld pool
B) The distance from the gap between plates and the clamp wire
C) Length of the weld
D) Length of the rod
  • 4. What is undercut?
A) A surface crack
B) Extra filler metal
C) A grove melted into the base metal that is a misaligned joint
D) A groove melted into base metal left unfilled
  • 5. What is a crater?
A) A melted rod tip in the face of the weld
B) A buildup of slag in the face of the weld
C) A porosity pocket 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 HAZ boundary
B) Imaginary line through weld toe
C) Imaginary line through top of the bead
D) Imaginary line through center of weld metal
  • 7. What is spatter?
A) Gas bubbles expelled that do not form part of the weld
B) Falling flux 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) Hot cracks trapped in the weld pool at the end
B) Undercut failure
C) Non-metallic material trapped in weld
D) Steel trapped in slag
  • 9. What is a joint?
A) Location where two or more members are joined
B) filler metal
C) a welding defect
D) The end of the metal piece that is welded first.
  • 10. What is a crater crack?
A) A centerline crack
B) A stress fracture formed cause metal was too clean
C) A crack in the crater of a weld bead
D) A cold shut
  • 11. What is ductility
A) Ability to resist rust
B) Ability to stay magnetized
C) Ability to deform without failure
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) Flux coating
B) Distance fusion extends into base metal
C) Metal base plate
D) Metal added to make a welded joint
  • 14. What is depth of fusion?
A) Distance fusion extends into base metal
B) Weld height
C) Rod penetration
D) Distance bead width extends
  • 15. What is penetration?
A) Bead surface depth
B) Slag depth
C) Extent weld metal combines with base metal
D) Arc reach
  • 16. What is deposition rate?
A) Amount of slag produced
B) Heat generated
C) Weight of metal deposited per unit time
D) Length welded per hour
  • 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 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) High speed
B) Fully automated
C) Portable and inexpensive
D) No slag
  • 20. Disadvantage of SMAW?
A) Only works indoors
B) Requires gas bottles
C) Cannot weld steel
D) It’s slow
  • 21. 7018 can use:
A) DC only
B) AC only
C) Neither
D) AC or DC
  • 22. What polarity do we weld with?
A) Straight polarity
B) No polarity
C) Reverse polarity
D) Alternating ground
  • 23. Reverse polarity:
A) Electrode is positive, ground negative
B) No polarity exists
C) Ground floats
D) Electrode negative
  • 24. Two safety points:
A) Avoid using gloves never safety glasses
B) Always weld outside use sitka gloves
C) Proper ventilation and protective clothing
D) Use small rods and low heat
  • 25. SMAW electrode:
A) MIG wire
B) Consumable electrode covered with flux
C) TIG tungsten
D) Carbon rod
  • 26. Strength of 7018 rod:
A) 40k psi
B) 18k psi
C) 70k psi
D) 120k 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) Composition of rod
B) Strength
C) Arc length
D) Diameter
  • 29. Four rod groups:
A) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
B) Inert, reactive, passive, active
C) High carbon, low carbon, stainless, alloy
D) Soft rods, hard rods, hot rods, cold rods
  • 30. DCEP:
A) Direct Current Electrode Positive
B) Direct Coil Energy Pulse
C) Dual Current Electrode Phase
D) Direct Current Elevated Pressure
  • 31. Why put rods in oven?
A) heat for penetration
B) Reduce moisture
C) Prevent Bending
D) sterilize
  • 32. Minimum oven temperature?
A) 175°F
B) 500°F
C) 250°F
D) 100°F
  • 33. E stands for:
A) Energy
B) Electrode
C) Earth
D) Edge
  • 34. Rod lengths:
A) 20–30 inches
B) 3–6 inches
C) 1–2 feet
D) 9–18 inches
  • 35. MR or R:
A) Metal rod
B) Medium rated
C) Moisture resistant
D) Machine ready
  • 36. Base metal we use:
A) Stainless steel
B) Cast iron
C) Aluminum
D) A36 mild 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) Arc, gas, flux, rod, plate
B) Root, face, toe, leg, web
C) Curve, twist, bend, fold, lock
D) Lap, butt, edge, corner, T-joint
  • 39. AWS:
A) American Welding Society
B) Arc Welding System
C) American Wire Service
D) Advanced Weld Standards
  • 40. Heat affected zone:
A) Metal melted completely
B) Joint line
C) Slag-covered area
D) Metal altered but not melted
  • 41. PJP:
A) Partial Joint Penetration
B) Pressure Joint Process
C) Parallel Joint Pass
D) Primary Joint Preparation
  • 42. CJP:
A) Complete Joint Penetration
B) Central Joint Plane
C) Cut Joint Position
D) Controlled Joint Process
  • 43. 1F:
A) Flat fillet
B) Vertical fillet
C) Overhead fillet
D) Flat groove
  • 44. 2F
A) Horizontal fillet
B) Vertical groove
C) Flat Fillet
D) Horizontal groove
  • 45. 3F
A) Flat fillet
B) Horizontal groove
C) Overhead fillet
D) Vertical fillet
  • 46. 4F:
A) Flat groove
B) Vertical fillet
C) Overhead fillet
D) Horizontal fillet
  • 47. 1G:
A) Vertical groove
B) Flat groove
C) Flat fillet
D) Overhead groove
  • 48. 2G:
A) Horizontal groove
B) Horizontal fillet
C) Flat groove
D) Vertical groove
  • 49. 3G:
A) Horizontal fillet
B) Vertical groove
C) Flat groove
D) Overhead groove
  • 50. 4G:
A) Horizontal fillet
B) Vertical groove
C) Overhead groove
D) Flat 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) Hydrogen
B) Sulphur
C) Mercury
D) Oxygen
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