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12-11-25 Welding Midterm Review 2025
Contribuição de: 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) Flow of electricity through a gaseous space or air gap
B) A joint type that lets light fly around everywhere
C) Light from welding
D) A type of electrode
  • 3. What is arc length?
A) Length of the weld
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 rod
  • 4. What is undercut?
A) A surface crack
B) A groove melted into base metal left unfilled
C) A grove melted into the base metal that is a misaligned joint
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 buildup of slag 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 top of the bead
B) Imaginary line through center of weld metal
C) Imaginary line through HAZ boundary
D) Imaginary line through weld toe
  • 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) 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) Steel trapped in slag
C) Undercut failure
D) Non-metallic material trapped in weld
  • 9. What is a joint?
A) a welding defect
B) The end of the metal piece that is welded first.
C) Location where two or more members are joined
D) filler metal
  • 10. What is a crater crack?
A) A stress fracture formed cause metal was too clean
B) A cold shut
C) A crack in the crater of a weld bead
D) A centerline crack
  • 11. What is ductility
A) Ability to deform without failure
B) Ability to stay magnetized
C) Ability to remain cold.
D) Ability to resist rust
  • 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) Flux coating
B) Metal added to make a welded joint
C) Metal base plate
D) Distance fusion extends into base metal
  • 14. What is depth of fusion?
A) Distance fusion extends into base metal
B) Distance bead width extends
C) Weld height
D) Rod penetration
  • 15. What is penetration?
A) Arc reach
B) Bead surface depth
C) Extent weld metal combines with base metal
D) Slag depth
  • 16. What is deposition rate?
A) Amount of slag produced
B) Length welded per hour
C) Heat generated
D) Weight of metal deposited per unit time
  • 17. What does SMAW stand for?
A) Shielded Metal Arc Welding
B) Solid Metal Arc Welding
C) Shielded Mechanical Arc Welding
D) Stick Metal Arc Work
  • 18. What is SMAW?
A) Uses heat of an arc between covered electrode and the work
B) Uses shielding gas
C) Purely mechanical process
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) Requires gas bottles
B) Cannot weld steel
C) It’s slow
D) Only works indoors
  • 21. 7018 can use:
A) AC or DC
B) AC only
C) Neither
D) DC only
  • 22. What polarity do we weld with?
A) No polarity
B) Alternating ground
C) Straight polarity
D) Reverse polarity
  • 23. Reverse polarity:
A) Electrode negative
B) Electrode is positive, ground negative
C) Ground floats
D) No polarity exists
  • 24. Two safety points:
A) Use small rods and low heat
B) Avoid using gloves never safety glasses
C) Proper ventilation and protective clothing
D) Always weld outside use sitka gloves
  • 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) 120k psi
C) 18k psi
D) 70k psi
  • 27. Meaning of 3rd digit in 7018:
A) Rod length
B) Positive polarity rod
C) Welding position
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Strength
B) Arc length
C) Composition of rod
D) Diameter
  • 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 Elevated Pressure
B) Dual Current Electrode Phase
C) Direct Current Electrode Positive
D) Direct Coil Energy Pulse
  • 31. Why put rods in oven?
A) Reduce moisture
B) sterilize
C) Prevent Bending
D) heat for penetration
  • 32. Minimum oven temperature?
A) 175°F
B) 500°F
C) 250°F
D) 100°F
  • 33. E stands for:
A) Edge
B) Electrode
C) Earth
D) Energy
  • 34. Rod lengths:
A) 3–6 inches
B) 20–30 inches
C) 9–18 inches
D) 1–2 feet
  • 35. MR or R:
A) Moisture resistant
B) Metal rod
C) Machine ready
D) Medium rated
  • 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) Root, face, toe, leg, web
B) Curve, twist, bend, fold, lock
C) Lap, butt, edge, corner, T-joint
D) Arc, gas, flux, rod, plate
  • 39. AWS:
A) Arc Welding System
B) American Welding Society
C) American Wire Service
D) Advanced Weld Standards
  • 40. Heat affected zone:
A) Slag-covered area
B) Joint line
C) Metal melted completely
D) Metal altered but not melted
  • 41. PJP:
A) Pressure Joint Process
B) Partial Joint Penetration
C) Parallel Joint Pass
D) Primary Joint Preparation
  • 42. CJP:
A) Complete Joint Penetration
B) Controlled Joint Process
C) Central Joint Plane
D) Cut Joint Position
  • 43. 1F:
A) Flat groove
B) Overhead fillet
C) Flat fillet
D) Vertical fillet
  • 44. 2F
A) Flat Fillet
B) Vertical groove
C) Horizontal fillet
D) Horizontal groove
  • 45. 3F
A) Flat fillet
B) Overhead fillet
C) Vertical fillet
D) Horizontal groove
  • 46. 4F:
A) Vertical fillet
B) Flat groove
C) Overhead fillet
D) Horizontal fillet
  • 47. 1G:
A) Flat groove
B) Flat fillet
C) Overhead groove
D) Vertical groove
  • 48. 2G:
A) Horizontal groove
B) Flat groove
C) Vertical groove
D) Horizontal fillet
  • 49. 3G:
A) Horizontal fillet
B) Vertical groove
C) Overhead groove
D) Flat groove
  • 50. 4G:
A) Horizontal fillet
B) Vertical groove
C) Overhead groove
D) Flat groove
  • 51. Weave:
A) Slag brushing
B) Root buildup
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) Mercury
D) Hydrogen
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