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12-11-25 Welding Midterm Review 2025
Katkıları bulunanlar: Sandifer
  • 1. What is the base metal?
A) The metal to be welded
B) The weld bead
C) The flux coating
D) The shielding gas makes sparks
  • 2. What is an arc?
A) Light from welding
B) Flow of electricity through a gaseous space or air gap
C) A type of electrode
D) A joint type that lets light fly around everywhere
  • 3. What is arc length?
A) Length of the weld
B) The distance from the electrode to the weld pool
C) Length of the rod
D) The distance from the gap between plates and the clamp wire
  • 4. What is undercut?
A) A groove melted into base metal left unfilled
B) A grove melted into the base metal that is a misaligned joint
C) A surface crack
D) Extra filler metal
  • 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 depression 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 top of the bead
D) Imaginary line through center of weld metal
  • 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) Falling flux 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) Non-metallic material trapped in weld
B) Steel trapped in slag
C) Hot cracks trapped in the weld pool at the end
D) Undercut failure
  • 9. What is a joint?
A) a welding defect
B) filler metal
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 crack in the crater of a weld bead
B) A cold shut
C) A centerline crack
D) A stress fracture formed cause metal was too clean
  • 11. What is ductility
A) Ability to resist rust
B) Ability to deform without failure
C) Ability to remain cold.
D) Ability to stay magnetized
  • 12. What is duty cycle?
A) Machine lifespan over a 10 min period
B) Electrode burn rate is working nonstop
C) Percentage of time welders operate at rated output
D) Arc stability rating
  • 13. What is filler metal?
A) Distance fusion extends into base metal
B) Metal base plate
C) Flux coating
D) Metal added to make a welded joint
  • 14. What is depth of fusion?
A) Rod penetration
B) Distance bead width extends
C) Distance fusion extends into base metal
D) Weld height
  • 15. What is penetration?
A) Arc reach
B) Extent weld metal combines with base metal
C) Bead surface depth
D) Slag depth
  • 16. What is deposition rate?
A) Heat generated
B) Weight of metal deposited per unit time
C) Amount of slag produced
D) Length welded per hour
  • 17. What does SMAW stand for?
A) Shielded Metal Arc Welding
B) Shielded Mechanical Arc Welding
C) Stick Metal Arc Work
D) Solid Metal Arc Welding
  • 18. What is SMAW?
A) Uses tungsten electrode
B) Uses shielding gas
C) Uses heat of an arc between covered electrode and the work
D) Purely mechanical process
  • 19. Advantage of SMAW?
A) Fully automated
B) High speed
C) Portable and inexpensive
D) No slag
  • 20. Disadvantage of SMAW?
A) Cannot weld steel
B) Requires gas bottles
C) It’s slow
D) Only works indoors
  • 21. 7018 can use:
A) Neither
B) AC only
C) DC only
D) AC or DC
  • 22. What polarity do we weld with?
A) Straight polarity
B) No polarity
C) Alternating ground
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) 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) TIG tungsten
B) Carbon rod
C) MIG wire
D) Consumable electrode covered with flux
  • 26. Strength of 7018 rod:
A) 18k psi
B) 70k psi
C) 40k psi
D) 120k psi
  • 27. Meaning of 3rd digit in 7018:
A) Rod length
B) Welding position
C) Coating type
D) Positive polarity rod
  • 28. Meaning of 4th digit in 7018:
A) Diameter
B) Strength
C) Composition of rod
D) Arc length
  • 29. Four rod groups:
A) High carbon, low carbon, stainless, alloy
B) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
C) Inert, reactive, passive, active
D) Soft rods, hard rods, hot rods, cold rods
  • 30. DCEP:
A) Direct Coil Energy Pulse
B) Dual Current Electrode Phase
C) Direct Current Elevated Pressure
D) Direct Current Electrode Positive
  • 31. Why put rods in oven?
A) Prevent Bending
B) sterilize
C) Reduce moisture
D) heat for penetration
  • 32. Minimum oven temperature?
A) 175°F
B) 500°F
C) 250°F
D) 100°F
  • 33. E stands for:
A) Energy
B) Electrode
C) Earth
D) Edge
  • 34. Rod lengths:
A) 20–30 inches
B) 1–2 feet
C) 3–6 inches
D) 9–18 inches
  • 35. MR or R:
A) Metal rod
B) Machine ready
C) Medium rated
D) Moisture resistant
  • 36. Base metal we use:
A) A36 mild steel
B) Aluminum
C) Stainless steel
D) Cast iron
  • 37. Light produced in welding:
A) Green infrared
B) Blue spectrum only
C) X‑ray emissions
D) Electro violet and ultra red light
  • 38. Five joint types:
A) Lap, butt, edge, corner, T-joint
B) Arc, gas, flux, rod, plate
C) Root, face, toe, leg, web
D) Curve, twist, bend, fold, lock
  • 39. AWS:
A) Advanced Weld Standards
B) Arc Welding System
C) American Wire Service
D) American Welding Society
  • 40. Heat affected zone:
A) Metal altered but not melted
B) Joint line
C) Slag-covered area
D) Metal melted completely
  • 41. PJP:
A) Parallel Joint Pass
B) Partial Joint Penetration
C) Pressure Joint Process
D) Primary Joint Preparation
  • 42. CJP:
A) Controlled Joint Process
B) Central Joint Plane
C) Cut Joint Position
D) Complete Joint Penetration
  • 43. 1F:
A) Flat fillet
B) Flat groove
C) Vertical fillet
D) Overhead fillet
  • 44. 2F
A) Vertical groove
B) Horizontal fillet
C) Horizontal groove
D) Flat Fillet
  • 45. 3F
A) Overhead fillet
B) Vertical fillet
C) Horizontal groove
D) Flat fillet
  • 46. 4F:
A) Vertical fillet
B) Flat groove
C) Horizontal fillet
D) Overhead fillet
  • 47. 1G:
A) Flat fillet
B) Flat groove
C) Vertical groove
D) Overhead groove
  • 48. 2G:
A) Horizontal fillet
B) Vertical groove
C) Horizontal groove
D) Flat groove
  • 49. 3G:
A) Horizontal fillet
B) Vertical groove
C) Flat groove
D) Overhead groove
  • 50. 4G:
A) Vertical groove
B) Flat groove
C) Overhead groove
D) Horizontal fillet
  • 51. Weave:
A) Slag brushing
B) Weld bead made with transverse movement
C) Root buildup
D) Cleaning motion
  • 52. No large amount of ______ should be in the weld
A) Hydrogen
B) Sulphur
C) Mercury
D) Oxygen
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