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12-11-25 Welding Midterm Review 2025
Contribució de: Sandifer
  • 1. What is the base metal?
A) The weld bead
B) The metal to be welded
C) The flux coating
D) The shielding gas makes sparks
  • 2. What is an arc?
A) Flow of electricity through a gaseous space or air gap
B) Light from welding
C) A type of electrode
D) A joint type that lets light fly around everywhere
  • 3. What is arc length?
A) The distance from the gap between plates and the clamp wire
B) The distance from the electrode to the weld pool
C) Length of the weld
D) Length of the rod
  • 4. What is undercut?
A) A groove melted into base metal left unfilled
B) A grove melted into the base metal that is a misaligned joint
C) A surface crack
D) Extra filler metal
  • 5. What is a crater?
A) A porosity pocket in the face of the weld
B) A melted rod tip in the face of the weld
C) A depression in the face of the weld
D) A buildup of slag in the face of the weld
  • 6. What is the axis of weld?
A) Imaginary line through center of weld metal
B) Imaginary line through top of the bead
C) Imaginary line through HAZ boundary
D) Imaginary line through weld toe
  • 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) Non-metallic material trapped in weld
B) Undercut failure
C) Hot cracks trapped in the weld pool at the end
D) Steel trapped in slag
  • 9. What is a joint?
A) The end of the metal piece that is welded first.
B) a welding defect
C) Location where two or more members are joined
D) filler metal
  • 10. What is a crater crack?
A) A crack in the crater of a weld bead
B) A stress fracture formed cause metal was too clean
C) A cold shut
D) A centerline crack
  • 11. What is ductility
A) Ability to remain cold.
B) Ability to resist rust
C) Ability to stay magnetized
D) Ability to deform without failure
  • 12. What is duty cycle?
A) Electrode burn rate is working nonstop
B) Arc stability rating
C) Machine lifespan over a 10 min period
D) Percentage of time welders operate at rated output
  • 13. What is filler metal?
A) Metal base plate
B) Metal added to make a welded joint
C) Distance fusion extends into base metal
D) Flux coating
  • 14. What is depth of fusion?
A) Distance bead width extends
B) Rod penetration
C) Weld height
D) Distance fusion extends into base metal
  • 15. What is penetration?
A) Arc reach
B) Extent weld metal combines with base metal
C) Slag depth
D) Bead surface depth
  • 16. What is deposition rate?
A) Heat generated
B) Length welded per hour
C) Amount of slag produced
D) Weight of metal deposited per unit time
  • 17. What does SMAW stand for?
A) Solid Metal Arc Welding
B) Stick Metal Arc Work
C) Shielded Mechanical Arc Welding
D) Shielded Metal Arc Welding
  • 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) Cannot weld steel
B) It’s slow
C) Requires gas bottles
D) Only works indoors
  • 21. 7018 can use:
A) DC only
B) AC or DC
C) AC only
D) Neither
  • 22. What polarity do we weld with?
A) Alternating ground
B) Reverse polarity
C) Straight polarity
D) No polarity
  • 23. Reverse polarity:
A) No polarity exists
B) Electrode is positive, ground negative
C) Ground floats
D) Electrode negative
  • 24. Two safety points:
A) Proper ventilation and protective clothing
B) Use small rods and low heat
C) Avoid using gloves never safety glasses
D) Always weld outside use sitka gloves
  • 25. SMAW electrode:
A) TIG tungsten
B) Consumable electrode covered with flux
C) MIG wire
D) Carbon rod
  • 26. Strength of 7018 rod:
A) 18k psi
B) 70k psi
C) 40k psi
D) 120k psi
  • 27. Meaning of 3rd digit in 7018:
A) Positive polarity rod
B) Welding position
C) Rod length
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Diameter
B) Strength
C) Composition of rod
D) Arc length
  • 29. Four rod groups:
A) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
B) High carbon, low carbon, stainless, alloy
C) Soft rods, hard rods, hot rods, cold rods
D) Inert, reactive, passive, active
  • 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) Reduce moisture
B) sterilize
C) heat for penetration
D) Prevent Bending
  • 32. Minimum oven temperature?
A) 250°F
B) 175°F
C) 100°F
D) 500°F
  • 33. E stands for:
A) Earth
B) Edge
C) Electrode
D) Energy
  • 34. Rod lengths:
A) 3–6 inches
B) 9–18 inches
C) 20–30 inches
D) 1–2 feet
  • 35. MR or R:
A) Machine ready
B) Moisture resistant
C) Metal rod
D) Medium rated
  • 36. Base metal we use:
A) Aluminum
B) Stainless steel
C) A36 mild steel
D) Cast iron
  • 37. Light produced in welding:
A) Blue spectrum only
B) Electro violet and ultra red light
C) X‑ray emissions
D) Green infrared
  • 38. Five joint types:
A) Root, face, toe, leg, web
B) Arc, gas, flux, rod, plate
C) Curve, twist, bend, fold, lock
D) Lap, butt, edge, corner, T-joint
  • 39. AWS:
A) Advanced Weld Standards
B) American Welding Society
C) Arc Welding System
D) American Wire Service
  • 40. Heat affected zone:
A) Joint line
B) Slag-covered area
C) Metal melted completely
D) Metal altered but not melted
  • 41. PJP:
A) Primary Joint Preparation
B) Parallel Joint Pass
C) Pressure Joint Process
D) Partial Joint Penetration
  • 42. CJP:
A) Controlled Joint Process
B) Central Joint Plane
C) Cut Joint Position
D) Complete Joint Penetration
  • 43. 1F:
A) Flat fillet
B) Vertical fillet
C) Flat groove
D) Overhead fillet
  • 44. 2F
A) Vertical groove
B) Flat Fillet
C) Horizontal groove
D) Horizontal fillet
  • 45. 3F
A) Horizontal groove
B) Vertical fillet
C) Flat fillet
D) Overhead fillet
  • 46. 4F:
A) Flat groove
B) Horizontal fillet
C) Overhead fillet
D) Vertical fillet
  • 47. 1G:
A) Flat groove
B) Vertical groove
C) Overhead groove
D) Flat fillet
  • 48. 2G:
A) Vertical groove
B) Horizontal fillet
C) Flat groove
D) Horizontal groove
  • 49. 3G:
A) Flat groove
B) Vertical groove
C) Horizontal fillet
D) Overhead groove
  • 50. 4G:
A) Vertical groove
B) Flat groove
C) Horizontal fillet
D) Overhead groove
  • 51. Weave:
A) Slag brushing
B) Weld bead made with transverse movement
C) Root buildup
D) Cleaning motion
  • 52. No large amount of ______ should be in the weld
A) Oxygen
B) Sulphur
C) Hydrogen
D) Mercury
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