12-11-25 Welding Midterm Review 2025
  • 1. What is the base metal?
A) The flux coating
B) The shielding gas makes sparks
C) The metal to be welded
D) The weld bead
  • 2. What is an arc?
A) Light from welding
B) Flow of electricity through a gaseous space or air gap
C) A joint type that lets light fly around everywhere
D) A type of electrode
  • 3. What is arc length?
A) Length of the weld
B) The distance from the electrode to the weld pool
C) The distance from the gap between plates and the clamp wire
D) Length of the rod
  • 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 melted rod tip in the face of the weld
B) A porosity pocket 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 top of the bead
B) Imaginary line through HAZ boundary
C) Imaginary line through weld toe
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) 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) Hot cracks trapped in the weld pool at the end
B) Non-metallic material trapped in weld
C) Steel trapped in slag
D) Undercut failure
  • 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 crack in the crater of a weld bead
B) A centerline crack
C) A cold shut
D) A stress fracture formed cause metal was too clean
  • 11. What is ductility
A) Ability to resist rust
B) Ability to remain cold.
C) Ability to deform without failure
D) Ability to stay magnetized
  • 12. What is duty cycle?
A) Arc stability rating
B) Percentage of time welders operate at rated output
C) Electrode burn rate is working nonstop
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) Distance fusion extends into base metal
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) Arc reach
B) Extent weld metal combines with base metal
C) Slag depth
D) Bead surface depth
  • 16. What is deposition rate?
A) Heat generated
B) Length welded per hour
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) Solid Metal Arc Welding
C) Shielded Mechanical Arc Welding
D) Shielded Metal Arc Welding
  • 18. What is SMAW?
A) Purely mechanical process
B) Uses shielding gas
C) Uses heat of an arc between covered electrode and the work
D) Uses tungsten electrode
  • 19. Advantage of SMAW?
A) No slag
B) High speed
C) Portable and inexpensive
D) Fully automated
  • 20. Disadvantage of SMAW?
A) Cannot weld steel
B) It’s slow
C) Only works indoors
D) Requires gas bottles
  • 21. 7018 can use:
A) DC only
B) AC only
C) AC or DC
D) Neither
  • 22. What polarity do we weld with?
A) Alternating ground
B) Straight polarity
C) No polarity
D) Reverse polarity
  • 23. Reverse polarity:
A) Electrode negative
B) No polarity exists
C) Ground floats
D) Electrode is positive, ground 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) Carbon rod
B) Consumable electrode covered with flux
C) TIG tungsten
D) MIG wire
  • 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) Coating type
B) Welding position
C) Rod length
D) Positive polarity rod
  • 28. Meaning of 4th digit in 7018:
A) Strength
B) Diameter
C) Arc length
D) Composition of rod
  • 29. Four rod groups:
A) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
B) High carbon, low carbon, stainless, alloy
C) Soft rods, hard rods, hot rods, cold rods
D) Inert, reactive, passive, active
  • 30. DCEP:
A) Direct Coil Energy Pulse
B) Dual Current Electrode Phase
C) Direct Current Electrode Positive
D) Direct Current Elevated Pressure
  • 31. Why put rods in oven?
A) sterilize
B) heat for penetration
C) Prevent Bending
D) Reduce moisture
  • 32. Minimum oven temperature?
A) 500°F
B) 175°F
C) 100°F
D) 250°F
  • 33. E stands for:
A) Earth
B) Electrode
C) Edge
D) Energy
  • 34. Rod lengths:
A) 20–30 inches
B) 9–18 inches
C) 3–6 inches
D) 1–2 feet
  • 35. MR or R:
A) Machine ready
B) Medium rated
C) Moisture resistant
D) Metal rod
  • 36. Base metal we use:
A) A36 mild steel
B) Cast iron
C) Stainless steel
D) Aluminum
  • 37. Light produced in welding:
A) X‑ray emissions
B) Electro violet and ultra red light
C) Blue spectrum only
D) Green infrared
  • 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) Arc Welding System
B) American Welding Society
C) Advanced Weld Standards
D) American Wire Service
  • 40. Heat affected zone:
A) Joint line
B) Metal melted completely
C) Slag-covered area
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) Central Joint Plane
B) Complete Joint Penetration
C) Controlled Joint Process
D) Cut Joint Position
  • 43. 1F:
A) Vertical fillet
B) Overhead fillet
C) Flat groove
D) Flat fillet
  • 44. 2F
A) Horizontal groove
B) Flat Fillet
C) Vertical groove
D) Horizontal fillet
  • 45. 3F
A) Overhead fillet
B) Horizontal groove
C) Vertical fillet
D) Flat fillet
  • 46. 4F:
A) Overhead fillet
B) Flat groove
C) Horizontal fillet
D) Vertical fillet
  • 47. 1G:
A) Flat groove
B) Overhead groove
C) Flat fillet
D) Vertical groove
  • 48. 2G:
A) Horizontal fillet
B) Horizontal groove
C) Vertical groove
D) Flat groove
  • 49. 3G:
A) Overhead groove
B) Horizontal fillet
C) Flat groove
D) Vertical groove
  • 50. 4G:
A) Flat groove
B) Vertical groove
C) Overhead groove
D) Horizontal fillet
  • 51. Weave:
A) Slag brushing
B) Cleaning motion
C) Weld bead made with transverse movement
D) Root buildup
  • 52. No large amount of ______ should be in the weld
A) Mercury
B) Oxygen
C) Sulphur
D) Hydrogen
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