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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 flux coating
C) The shielding gas makes sparks
D) The weld bead
  • 2. What is an arc?
A) Flow of electricity through a gaseous space or air gap
B) A type of electrode
C) A joint type that lets light fly around everywhere
D) Light from welding
  • 3. What is arc length?
A) Length of the weld
B) The distance from the gap between plates and the clamp wire
C) The distance from the electrode to the weld pool
D) Length of the rod
  • 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 depression in the face of the weld
C) A melted rod tip in the face of the weld
D) A buildup of slag in the face of the weld
  • 6. What is the axis of weld?
A) Imaginary line through weld toe
B) Imaginary line through HAZ boundary
C) Imaginary line through center of weld metal
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) Arc blow expelled that do not form part of the weld
C) Metal particles 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) Hot cracks trapped in the weld pool at the end
C) Steel trapped in slag
D) Non-metallic material trapped in weld
  • 9. What is a joint?
A) filler metal
B) Location where two or more members are joined
C) a welding defect
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 remain cold.
B) Ability to stay magnetized
C) Ability to resist rust
D) Ability to deform without failure
  • 12. What is duty cycle?
A) Percentage of time welders operate at rated output
B) Electrode burn rate is working nonstop
C) Machine lifespan over a 10 min period
D) Arc stability rating
  • 13. What is filler metal?
A) Metal added to make a welded joint
B) Flux coating
C) Metal base plate
D) Distance fusion extends into base metal
  • 14. What is depth of fusion?
A) Weld height
B) Distance bead width extends
C) Rod penetration
D) Distance fusion extends into base metal
  • 15. What is penetration?
A) Bead surface depth
B) Arc reach
C) Extent weld metal combines with base metal
D) Slag depth
  • 16. What is deposition rate?
A) Heat generated
B) Length welded per hour
C) Weight of metal deposited per unit time
D) Amount of slag produced
  • 17. What does SMAW stand for?
A) Solid Metal Arc Welding
B) Shielded Mechanical Arc Welding
C) Shielded Metal Arc Welding
D) Stick Metal Arc Work
  • 18. What is SMAW?
A) Uses tungsten electrode
B) Purely mechanical process
C) Uses shielding gas
D) Uses heat of an arc between covered electrode and the work
  • 19. Advantage of SMAW?
A) Fully automated
B) No slag
C) High speed
D) Portable and inexpensive
  • 20. Disadvantage of SMAW?
A) It’s slow
B) Cannot weld steel
C) Only works indoors
D) Requires gas bottles
  • 21. 7018 can use:
A) Neither
B) AC only
C) DC only
D) AC or DC
  • 22. What polarity do we weld with?
A) Reverse polarity
B) No polarity
C) Straight polarity
D) Alternating ground
  • 23. Reverse polarity:
A) Electrode is positive, ground negative
B) No polarity exists
C) Electrode negative
D) Ground floats
  • 24. Two safety points:
A) Avoid using gloves never safety glasses
B) Use small rods and low heat
C) Always weld outside use sitka gloves
D) Proper ventilation and protective clothing
  • 25. SMAW electrode:
A) Carbon rod
B) MIG wire
C) TIG tungsten
D) Consumable electrode covered with flux
  • 26. Strength of 7018 rod:
A) 120k psi
B) 70k psi
C) 18k psi
D) 40k 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) Strength
B) Arc length
C) Composition of rod
D) Diameter
  • 29. Four rod groups:
A) High carbon, low carbon, stainless, alloy
B) Soft rods, hard rods, hot rods, cold rods
C) Inert, reactive, passive, active
D) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
  • 30. DCEP:
A) Direct Current Electrode Positive
B) Dual Current Electrode Phase
C) Direct Current Elevated Pressure
D) Direct Coil Energy Pulse
  • 31. Why put rods in oven?
A) sterilize
B) Reduce moisture
C) Prevent Bending
D) heat for penetration
  • 32. Minimum oven temperature?
A) 250°F
B) 500°F
C) 175°F
D) 100°F
  • 33. E stands for:
A) Electrode
B) Edge
C) Energy
D) Earth
  • 34. Rod lengths:
A) 3–6 inches
B) 9–18 inches
C) 1–2 feet
D) 20–30 inches
  • 35. MR or R:
A) Moisture resistant
B) Machine ready
C) Medium rated
D) Metal rod
  • 36. Base metal we use:
A) Cast iron
B) Aluminum
C) A36 mild steel
D) Stainless steel
  • 37. Light produced in welding:
A) Blue spectrum only
B) X‑ray emissions
C) Electro violet and ultra red light
D) Green infrared
  • 38. Five joint types:
A) Arc, gas, flux, rod, plate
B) Lap, butt, edge, corner, T-joint
C) Curve, twist, bend, fold, lock
D) Root, face, toe, leg, web
  • 39. AWS:
A) American Wire Service
B) Advanced Weld Standards
C) American Welding Society
D) Arc Welding System
  • 40. Heat affected zone:
A) Metal melted completely
B) Metal altered but not melted
C) Slag-covered area
D) Joint line
  • 41. PJP:
A) Pressure Joint Process
B) Parallel Joint Pass
C) Partial Joint Penetration
D) Primary Joint Preparation
  • 42. CJP:
A) Central Joint Plane
B) Complete Joint Penetration
C) Cut Joint Position
D) Controlled Joint Process
  • 43. 1F:
A) Vertical fillet
B) Flat fillet
C) Overhead fillet
D) Flat groove
  • 44. 2F
A) Vertical groove
B) Flat Fillet
C) Horizontal fillet
D) Horizontal groove
  • 45. 3F
A) Vertical fillet
B) Horizontal groove
C) Overhead fillet
D) Flat fillet
  • 46. 4F:
A) Vertical fillet
B) Flat groove
C) Overhead fillet
D) Horizontal fillet
  • 47. 1G:
A) Vertical groove
B) Overhead groove
C) Flat fillet
D) Flat groove
  • 48. 2G:
A) Vertical groove
B) Horizontal fillet
C) Flat groove
D) Horizontal groove
  • 49. 3G:
A) Flat groove
B) Overhead groove
C) Vertical groove
D) Horizontal fillet
  • 50. 4G:
A) Flat groove
B) Horizontal fillet
C) Vertical groove
D) Overhead groove
  • 51. Weave:
A) Cleaning motion
B) Root buildup
C) Weld bead made with transverse movement
D) Slag brushing
  • 52. No large amount of ______ should be in the weld
A) Sulphur
B) Mercury
C) Hydrogen
D) Oxygen
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