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12-11-25 Welding Midterm Review 2025
Opracowany przez: Sandifer
  • 1. What is the base metal?
A) The metal to be welded
B) The weld bead
C) The flux coating
D) The shielding gas makes sparks
  • 2. What is an arc?
A) Light from welding
B) A type of electrode
C) Flow of electricity through a gaseous space or air gap
D) A joint type that lets light fly around everywhere
  • 3. What is arc length?
A) The distance from the electrode to the weld pool
B) Length of the rod
C) Length of the weld
D) The distance from the gap between plates and the clamp wire
  • 4. What is undercut?
A) Extra filler metal
B) A surface crack
C) A grove melted into the base metal that is a misaligned joint
D) A groove melted into base metal left unfilled
  • 5. What is a crater?
A) A porosity pocket in the face of the weld
B) A buildup of slag in the face of the weld
C) A melted rod tip 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 center of weld metal
B) Imaginary line through top of the bead
C) Imaginary line through weld toe
D) Imaginary line through HAZ boundary
  • 7. What is spatter?
A) Falling flux expelled that do not form part of the weld
B) Metal particles 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) Location where two or more members are joined
C) a welding defect
D) filler metal
  • 10. What is a crater crack?
A) A stress fracture formed cause metal was too clean
B) A crack in the crater of a weld bead
C) A centerline crack
D) A cold shut
  • 11. What is ductility
A) Ability to deform without failure
B) Ability to stay magnetized
C) Ability to resist rust
D) Ability to remain cold.
  • 12. What is duty cycle?
A) Percentage of time welders operate at rated output
B) Machine lifespan over a 10 min period
C) Arc stability rating
D) Electrode burn rate is working nonstop
  • 13. What is filler metal?
A) Flux coating
B) Metal base plate
C) Distance fusion extends into base metal
D) Metal added to make a welded joint
  • 14. What is depth of fusion?
A) Rod penetration
B) Distance fusion extends into base metal
C) Weld height
D) Distance bead width extends
  • 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) Length welded per hour
B) Heat generated
C) Amount of slag produced
D) Weight of metal deposited per unit time
  • 17. What does SMAW stand for?
A) Stick Metal Arc Work
B) Shielded Metal Arc Welding
C) Shielded Mechanical Arc Welding
D) Solid Metal Arc Welding
  • 18. What is SMAW?
A) Uses heat of an arc between covered electrode and the work
B) Uses tungsten electrode
C) Uses shielding gas
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) It’s slow
B) Only works indoors
C) Cannot weld steel
D) Requires gas bottles
  • 21. 7018 can use:
A) AC only
B) Neither
C) DC only
D) AC or DC
  • 22. What polarity do we weld with?
A) Alternating ground
B) Straight polarity
C) Reverse 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) Always weld outside use sitka gloves
C) Use small rods and low heat
D) Avoid using gloves never safety glasses
  • 25. SMAW electrode:
A) Consumable electrode covered with flux
B) Carbon rod
C) MIG wire
D) TIG tungsten
  • 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) Coating type
C) Rod length
D) Welding position
  • 28. Meaning of 4th digit in 7018:
A) Composition of rod
B) Diameter
C) Strength
D) Arc length
  • 29. Four rod groups:
A) Inert, reactive, passive, active
B) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
C) High carbon, low carbon, stainless, alloy
D) Soft rods, hard rods, hot rods, cold rods
  • 30. DCEP:
A) Direct Current Elevated Pressure
B) Direct Coil Energy Pulse
C) Dual Current Electrode Phase
D) Direct Current Electrode Positive
  • 31. Why put rods in oven?
A) Reduce moisture
B) Prevent Bending
C) sterilize
D) heat for penetration
  • 32. Minimum oven temperature?
A) 500°F
B) 100°F
C) 250°F
D) 175°F
  • 33. E stands for:
A) Electrode
B) Earth
C) Edge
D) Energy
  • 34. Rod lengths:
A) 1–2 feet
B) 20–30 inches
C) 9–18 inches
D) 3–6 inches
  • 35. MR or R:
A) Metal rod
B) Moisture resistant
C) Medium rated
D) Machine ready
  • 36. Base metal we use:
A) Aluminum
B) A36 mild steel
C) Stainless steel
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) 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) Advanced Weld Standards
D) American Wire Service
  • 40. Heat affected zone:
A) Metal melted completely
B) Metal altered but not melted
C) Joint line
D) Slag-covered area
  • 41. PJP:
A) Primary Joint Preparation
B) Parallel Joint Pass
C) Pressure Joint Process
D) Partial Joint Penetration
  • 42. CJP:
A) Cut Joint Position
B) Controlled Joint Process
C) Central Joint Plane
D) Complete Joint Penetration
  • 43. 1F:
A) Flat groove
B) Vertical fillet
C) Flat fillet
D) Overhead fillet
  • 44. 2F
A) Flat Fillet
B) Horizontal groove
C) Horizontal fillet
D) Vertical groove
  • 45. 3F
A) Flat fillet
B) Overhead fillet
C) Vertical fillet
D) Horizontal groove
  • 46. 4F:
A) Overhead fillet
B) Vertical fillet
C) Flat groove
D) Horizontal fillet
  • 47. 1G:
A) Flat fillet
B) Overhead groove
C) Vertical groove
D) Flat groove
  • 48. 2G:
A) Horizontal fillet
B) Vertical groove
C) Horizontal groove
D) Flat groove
  • 49. 3G:
A) Horizontal fillet
B) Flat groove
C) Vertical groove
D) Overhead groove
  • 50. 4G:
A) Horizontal fillet
B) Overhead groove
C) Vertical groove
D) Flat groove
  • 51. Weave:
A) Weld bead made with transverse movement
B) Root buildup
C) Cleaning motion
D) Slag brushing
  • 52. No large amount of ______ should be in the weld
A) Oxygen
B) Sulphur
C) Mercury
D) Hydrogen
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