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12-11-25 Welding Midterm Review 2025
Hauen laguntzarekin: Sandifer
  • 1. What is the base metal?
A) The shielding gas makes sparks
B) The flux coating
C) The metal to be welded
D) The weld bead
  • 2. What is an arc?
A) A joint type that lets light fly around everywhere
B) Light from welding
C) Flow of electricity through a gaseous space or air gap
D) A type of electrode
  • 3. What is arc length?
A) Length of the weld
B) Length of the rod
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 grove melted into the base metal that is a misaligned joint
B) A surface crack
C) Extra filler metal
D) A groove melted into base metal left unfilled
  • 5. What is a crater?
A) A buildup of slag in the face of the weld
B) A depression 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 weld toe
C) Imaginary line through HAZ boundary
D) Imaginary line through center of weld metal
  • 7. What is spatter?
A) Metal particles expelled that do not form part of the weld
B) Arc blow expelled that do not form part of the weld
C) Gas bubbles 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) Hot cracks trapped in the weld pool at the end
B) Undercut failure
C) Steel trapped in slag
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 centerline crack
B) A crack in the crater of a weld bead
C) A stress fracture formed cause metal was too clean
D) A cold shut
  • 11. What is ductility
A) Ability to stay magnetized
B) Ability to deform without failure
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) Electrode burn rate is working nonstop
C) Arc stability rating
D) Machine lifespan over a 10 min period
  • 13. What is filler metal?
A) Flux coating
B) Metal added to make a welded joint
C) Metal base plate
D) Distance fusion extends into base metal
  • 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) Extent weld metal combines with base metal
C) Arc reach
D) Bead surface depth
  • 16. What is deposition rate?
A) Weight of metal deposited per unit time
B) Amount of slag produced
C) Heat generated
D) Length welded per hour
  • 17. What does SMAW stand for?
A) Shielded Mechanical Arc Welding
B) Stick Metal Arc Work
C) Shielded Metal Arc Welding
D) Solid Metal 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) Fully automated
C) No slag
D) High speed
  • 20. Disadvantage of SMAW?
A) Only works indoors
B) It’s slow
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) Ground floats
B) No polarity exists
C) Electrode negative
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Avoid using gloves never safety glasses
B) Proper ventilation and protective clothing
C) Use small rods and low heat
D) Always weld outside use sitka gloves
  • 25. SMAW electrode:
A) TIG tungsten
B) Carbon rod
C) MIG wire
D) Consumable electrode covered with flux
  • 26. Strength of 7018 rod:
A) 120k psi
B) 18k psi
C) 40k psi
D) 70k psi
  • 27. Meaning of 3rd digit in 7018:
A) Rod length
B) Welding position
C) Positive polarity rod
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Diameter
B) Strength
C) Arc length
D) Composition of rod
  • 29. Four rod groups:
A) Soft rods, hard rods, hot rods, cold rods
B) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
C) High carbon, low carbon, stainless, alloy
D) Inert, reactive, passive, active
  • 30. DCEP:
A) Direct Current Elevated Pressure
B) Dual Current Electrode Phase
C) Direct Coil Energy Pulse
D) Direct Current Electrode Positive
  • 31. Why put rods in oven?
A) sterilize
B) Prevent Bending
C) Reduce moisture
D) heat for penetration
  • 32. Minimum oven temperature?
A) 500°F
B) 250°F
C) 175°F
D) 100°F
  • 33. E stands for:
A) Edge
B) Electrode
C) Earth
D) Energy
  • 34. Rod lengths:
A) 9–18 inches
B) 3–6 inches
C) 1–2 feet
D) 20–30 inches
  • 35. MR or R:
A) Moisture resistant
B) Medium rated
C) Metal rod
D) Machine ready
  • 36. Base metal we use:
A) Cast iron
B) Aluminum
C) A36 mild steel
D) Stainless steel
  • 37. Light produced in welding:
A) Electro violet and ultra red light
B) Blue spectrum only
C) Green infrared
D) X‑ray emissions
  • 38. Five joint types:
A) Lap, butt, edge, corner, T-joint
B) Curve, twist, bend, fold, lock
C) Arc, gas, flux, rod, plate
D) Root, face, toe, leg, web
  • 39. AWS:
A) American Welding Society
B) Advanced Weld Standards
C) Arc Welding System
D) American Wire Service
  • 40. Heat affected zone:
A) Slag-covered area
B) Metal melted completely
C) Joint line
D) Metal altered but not melted
  • 41. PJP:
A) Parallel Joint Pass
B) Pressure Joint Process
C) Partial Joint Penetration
D) Primary Joint Preparation
  • 42. CJP:
A) Controlled Joint Process
B) Cut Joint Position
C) Complete Joint Penetration
D) Central Joint Plane
  • 43. 1F:
A) Flat groove
B) Flat fillet
C) Vertical fillet
D) Overhead fillet
  • 44. 2F
A) Horizontal fillet
B) Horizontal groove
C) Flat Fillet
D) Vertical groove
  • 45. 3F
A) Flat fillet
B) Vertical fillet
C) Overhead fillet
D) Horizontal groove
  • 46. 4F:
A) Overhead fillet
B) Vertical fillet
C) Flat groove
D) Horizontal fillet
  • 47. 1G:
A) Flat groove
B) Flat fillet
C) Overhead groove
D) Vertical groove
  • 48. 2G:
A) Flat groove
B) Horizontal groove
C) Vertical groove
D) Horizontal fillet
  • 49. 3G:
A) Flat groove
B) Horizontal fillet
C) Overhead groove
D) Vertical groove
  • 50. 4G:
A) Flat groove
B) Vertical groove
C) Overhead 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) Hydrogen
D) Oxygen
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