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