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