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12-11-25 Welding Midterm Review 2025
Hauen laguntzarekin: Sandifer
  • 1. What is the base metal?
A) The metal to be welded
B) The weld bead
C) The shielding gas makes sparks
D) The flux coating
  • 2. What is an arc?
A) A joint type that lets light fly around everywhere
B) A type of electrode
C) Light from welding
D) Flow of electricity through a gaseous space or air gap
  • 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) 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 depression 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 porosity pocket 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 weld toe
D) Imaginary line through HAZ boundary
  • 7. What is spatter?
A) Metal particles 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) Falling flux expelled that do not form part of the weld
  • 8. What is slag inclusion?
A) Undercut failure
B) Steel trapped in slag
C) Hot cracks trapped in the weld pool at the end
D) Non-metallic material trapped in weld
  • 9. What is a joint?
A) filler metal
B) a welding defect
C) Location where two or more members are joined
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 deform without failure
B) Ability to resist rust
C) Ability to remain cold.
D) Ability to stay magnetized
  • 12. What is duty cycle?
A) Electrode burn rate is working nonstop
B) Percentage of time welders operate at rated output
C) Arc stability rating
D) Machine lifespan over a 10 min period
  • 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) Weld height
B) Distance fusion extends into base metal
C) Distance bead width extends
D) Rod penetration
  • 15. What is penetration?
A) Slag depth
B) Arc reach
C) Extent weld metal combines with base metal
D) Bead surface depth
  • 16. What is deposition rate?
A) Heat generated
B) Amount of slag produced
C) Length welded per hour
D) Weight of metal deposited per unit time
  • 17. What does SMAW stand for?
A) Solid Metal Arc Welding
B) Shielded Mechanical Arc Welding
C) Stick Metal Arc Work
D) Shielded Metal Arc Welding
  • 18. What is SMAW?
A) Purely mechanical process
B) Uses shielding gas
C) Uses tungsten electrode
D) Uses heat of an arc between covered electrode and the work
  • 19. Advantage of SMAW?
A) High speed
B) Fully automated
C) Portable and inexpensive
D) No slag
  • 20. Disadvantage of SMAW?
A) Requires gas bottles
B) Only works indoors
C) Cannot weld steel
D) It’s slow
  • 21. 7018 can use:
A) AC only
B) AC or DC
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) Ground floats
B) No polarity exists
C) Electrode negative
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Always weld outside use sitka gloves
B) Use small rods and low heat
C) Proper ventilation and protective clothing
D) Avoid using gloves never safety glasses
  • 25. SMAW electrode:
A) Consumable electrode covered with flux
B) MIG wire
C) Carbon rod
D) TIG tungsten
  • 26. Strength of 7018 rod:
A) 40k psi
B) 70k psi
C) 18k psi
D) 120k psi
  • 27. Meaning of 3rd digit in 7018:
A) Coating type
B) Rod length
C) Welding position
D) Positive polarity rod
  • 28. Meaning of 4th digit in 7018:
A) Arc length
B) Composition of rod
C) Strength
D) Diameter
  • 29. Four rod groups:
A) Soft rods, hard rods, hot rods, cold rods
B) High carbon, low carbon, stainless, alloy
C) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
D) Inert, reactive, passive, active
  • 30. DCEP:
A) Direct Current Electrode Positive
B) Dual Current Electrode Phase
C) Direct Coil Energy Pulse
D) Direct Current Elevated Pressure
  • 31. Why put rods in oven?
A) Reduce moisture
B) heat for penetration
C) sterilize
D) Prevent Bending
  • 32. Minimum oven temperature?
A) 100°F
B) 500°F
C) 175°F
D) 250°F
  • 33. E stands for:
A) Earth
B) Electrode
C) Energy
D) Edge
  • 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) Stainless steel
B) Aluminum
C) Cast iron
D) A36 mild steel
  • 37. Light produced in welding:
A) X‑ray emissions
B) Blue spectrum only
C) Green infrared
D) Electro violet and ultra red light
  • 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) American Welding Society
D) Arc Welding System
  • 40. Heat affected zone:
A) Metal altered but not melted
B) Joint line
C) Metal melted completely
D) Slag-covered area
  • 41. PJP:
A) Partial Joint Penetration
B) Parallel Joint Pass
C) Primary Joint Preparation
D) Pressure Joint Process
  • 42. CJP:
A) Complete Joint Penetration
B) Cut Joint Position
C) Controlled Joint Process
D) Central Joint Plane
  • 43. 1F:
A) Overhead fillet
B) Flat groove
C) Flat fillet
D) Vertical fillet
  • 44. 2F
A) Horizontal groove
B) Horizontal fillet
C) Flat Fillet
D) Vertical groove
  • 45. 3F
A) Overhead fillet
B) Horizontal groove
C) Vertical fillet
D) Flat fillet
  • 46. 4F:
A) Flat groove
B) Vertical fillet
C) Overhead fillet
D) Horizontal fillet
  • 47. 1G:
A) Vertical groove
B) Flat fillet
C) Overhead groove
D) Flat groove
  • 48. 2G:
A) Horizontal fillet
B) Flat groove
C) Horizontal groove
D) Vertical groove
  • 49. 3G:
A) Flat groove
B) Horizontal fillet
C) Vertical groove
D) Overhead groove
  • 50. 4G:
A) Overhead groove
B) Horizontal fillet
C) Flat groove
D) Vertical groove
  • 51. Weave:
A) Cleaning motion
B) Root buildup
C) Slag brushing
D) Weld bead made with transverse movement
  • 52. No large amount of ______ should be in the weld
A) Oxygen
B) Sulphur
C) Hydrogen
D) Mercury
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