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