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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 metal to be welded
D) The flux coating
  • 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 electrode to the weld pool
B) The distance from the gap between plates and the clamp wire
C) Length of the rod
D) Length of the weld
  • 4. What is undercut?
A) A grove melted into the base metal that is a misaligned joint
B) Extra filler metal
C) A groove melted into base metal left unfilled
D) A surface crack
  • 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 depression 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 top of the bead
B) Imaginary line through weld toe
C) Imaginary line through HAZ boundary
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) Falling flux expelled that do not form part of the weld
C) Arc blow expelled that do not form part of the weld
D) Gas bubbles expelled that do not form part of the weld
  • 8. What is slag inclusion?
A) Undercut failure
B) Non-metallic material trapped in weld
C) Steel trapped in slag
D) Hot cracks trapped in the weld pool at the end
  • 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 centerline crack
C) A crack in the crater of a weld bead
D) A cold shut
  • 11. What is ductility
A) Ability to deform without failure
B) Ability to remain cold.
C) Ability to resist rust
D) Ability to stay magnetized
  • 12. What is duty cycle?
A) Machine lifespan over a 10 min period
B) Percentage of time welders operate at rated output
C) Electrode burn rate is working nonstop
D) Arc stability rating
  • 13. What is filler metal?
A) Flux coating
B) Distance fusion extends into base metal
C) Metal added to make a welded joint
D) Metal base plate
  • 14. What is depth of fusion?
A) Distance bead width extends
B) Distance fusion extends into base metal
C) Rod penetration
D) Weld height
  • 15. What is penetration?
A) Extent weld metal combines with base metal
B) Slag depth
C) Arc reach
D) Bead surface depth
  • 16. What is deposition rate?
A) Heat generated
B) Amount of slag produced
C) Length welded per hour
D) Weight of metal deposited per unit time
  • 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 shielding gas
B) Uses tungsten electrode
C) Uses heat of an arc between covered electrode and the work
D) Purely mechanical process
  • 19. Advantage of SMAW?
A) High speed
B) Fully automated
C) Portable and inexpensive
D) No slag
  • 20. Disadvantage of SMAW?
A) Cannot weld steel
B) It’s slow
C) Only works indoors
D) Requires gas bottles
  • 21. 7018 can use:
A) AC or DC
B) AC only
C) DC only
D) Neither
  • 22. What polarity do we weld with?
A) Reverse polarity
B) No polarity
C) Alternating ground
D) Straight polarity
  • 23. Reverse polarity:
A) Electrode is positive, ground negative
B) No polarity exists
C) Electrode negative
D) Ground floats
  • 24. Two safety points:
A) Avoid using gloves never safety glasses
B) Use small rods and low heat
C) Proper ventilation and protective clothing
D) Always weld outside use sitka gloves
  • 25. SMAW electrode:
A) TIG tungsten
B) Consumable electrode covered with flux
C) Carbon rod
D) MIG wire
  • 26. Strength of 7018 rod:
A) 70k psi
B) 120k psi
C) 40k psi
D) 18k psi
  • 27. Meaning of 3rd digit in 7018:
A) Rod length
B) Positive polarity rod
C) Coating type
D) Welding position
  • 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) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
C) Soft rods, hard rods, hot rods, cold rods
D) Inert, reactive, passive, active
  • 30. DCEP:
A) Dual Current Electrode Phase
B) Direct Current Electrode Positive
C) Direct Current Elevated Pressure
D) Direct Coil Energy Pulse
  • 31. Why put rods in oven?
A) Prevent Bending
B) sterilize
C) heat for penetration
D) Reduce moisture
  • 32. Minimum oven temperature?
A) 175°F
B) 100°F
C) 500°F
D) 250°F
  • 33. E stands for:
A) Electrode
B) Energy
C) Earth
D) Edge
  • 34. Rod lengths:
A) 20–30 inches
B) 1–2 feet
C) 9–18 inches
D) 3–6 inches
  • 35. MR or R:
A) Medium rated
B) Metal rod
C) Machine ready
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) Electro violet and ultra red light
B) Green infrared
C) X‑ray emissions
D) Blue spectrum only
  • 38. Five joint types:
A) Curve, twist, bend, fold, lock
B) Arc, gas, flux, rod, plate
C) Root, face, toe, leg, web
D) Lap, butt, edge, corner, T-joint
  • 39. AWS:
A) American Wire Service
B) Arc Welding System
C) Advanced Weld Standards
D) American Welding Society
  • 40. Heat affected zone:
A) Metal melted completely
B) Joint line
C) Metal altered but not melted
D) Slag-covered area
  • 41. PJP:
A) Partial Joint Penetration
B) Primary Joint Preparation
C) Parallel Joint Pass
D) Pressure Joint Process
  • 42. CJP:
A) Cut Joint Position
B) Controlled Joint Process
C) Complete Joint Penetration
D) Central Joint Plane
  • 43. 1F:
A) Flat groove
B) Vertical fillet
C) Flat fillet
D) Overhead fillet
  • 44. 2F
A) Vertical groove
B) Horizontal fillet
C) Horizontal groove
D) Flat Fillet
  • 45. 3F
A) Overhead fillet
B) Flat fillet
C) Vertical fillet
D) Horizontal groove
  • 46. 4F:
A) Horizontal fillet
B) Vertical fillet
C) Flat groove
D) Overhead fillet
  • 47. 1G:
A) Overhead groove
B) Vertical groove
C) Flat fillet
D) Flat groove
  • 48. 2G:
A) Horizontal fillet
B) Flat groove
C) Vertical groove
D) Horizontal groove
  • 49. 3G:
A) Horizontal fillet
B) Overhead groove
C) Flat groove
D) Vertical groove
  • 50. 4G:
A) Flat groove
B) Vertical groove
C) Overhead groove
D) Horizontal fillet
  • 51. Weave:
A) Root buildup
B) Slag brushing
C) Weld bead made with transverse movement
D) Cleaning motion
  • 52. No large amount of ______ should be in the weld
A) Sulphur
B) Oxygen
C) Hydrogen
D) Mercury
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