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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 shielding gas makes sparks
D) The flux coating
  • 2. What is an arc?
A) Light from welding
B) A type of electrode
C) Flow of electricity through a gaseous space or air gap
D) A joint type that lets light fly around everywhere
  • 3. What is arc length?
A) The distance from the electrode to the weld pool
B) Length of the weld
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) Extra filler metal
D) A surface crack
  • 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 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 center of weld metal
C) Imaginary line through weld toe
D) Imaginary line through HAZ boundary
  • 7. What is spatter?
A) Arc blow expelled that do not form part of the weld
B) Gas bubbles 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) 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 cold shut
B) A centerline crack
C) A crack in the crater of a weld bead
D) A stress fracture formed cause metal was too clean
  • 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) Machine lifespan over a 10 min period
B) Arc stability rating
C) Electrode burn rate is working nonstop
D) Percentage of time welders operate at rated output
  • 13. What is filler metal?
A) Metal added to make a welded joint
B) Distance fusion extends into base metal
C) Metal base plate
D) Flux coating
  • 14. What is depth of fusion?
A) Distance bead width extends
B) Rod penetration
C) Distance fusion extends into base metal
D) Weld height
  • 15. What is penetration?
A) Extent weld metal combines with base metal
B) Bead surface depth
C) Slag depth
D) Arc reach
  • 16. What is deposition rate?
A) Length welded per hour
B) Amount of slag produced
C) Heat generated
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) Shielded Metal Arc Welding
D) Stick Metal Arc Work
  • 18. What is SMAW?
A) Uses shielding gas
B) Uses tungsten electrode
C) Purely mechanical process
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) Cannot weld steel
B) It’s slow
C) Only works indoors
D) Requires gas bottles
  • 21. 7018 can use:
A) AC only
B) DC only
C) Neither
D) AC or DC
  • 22. What polarity do we weld with?
A) No polarity
B) Alternating ground
C) Straight polarity
D) Reverse polarity
  • 23. Reverse polarity:
A) Electrode negative
B) Ground floats
C) Electrode is positive, ground negative
D) No polarity exists
  • 24. Two safety points:
A) Avoid using gloves never safety glasses
B) Use small rods and low heat
C) Proper ventilation and protective clothing
D) Always weld outside use sitka gloves
  • 25. SMAW electrode:
A) Carbon rod
B) TIG tungsten
C) Consumable electrode covered with flux
D) MIG wire
  • 26. Strength of 7018 rod:
A) 120k psi
B) 18k psi
C) 70k psi
D) 40k psi
  • 27. Meaning of 3rd digit in 7018:
A) Welding position
B) Rod length
C) Positive polarity rod
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Strength
B) Composition of rod
C) Diameter
D) Arc length
  • 29. Four rod groups:
A) Soft rods, hard rods, hot rods, cold rods
B) High carbon, low carbon, stainless, alloy
C) Inert, reactive, passive, active
D) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
  • 30. DCEP:
A) Direct Current Elevated Pressure
B) Direct Coil Energy Pulse
C) Direct Current Electrode Positive
D) Dual Current Electrode Phase
  • 31. Why put rods in oven?
A) heat for penetration
B) Reduce moisture
C) sterilize
D) Prevent Bending
  • 32. Minimum oven temperature?
A) 250°F
B) 100°F
C) 500°F
D) 175°F
  • 33. E stands for:
A) Energy
B) Edge
C) Electrode
D) Earth
  • 34. Rod lengths:
A) 20–30 inches
B) 1–2 feet
C) 9–18 inches
D) 3–6 inches
  • 35. MR or R:
A) Medium rated
B) Moisture resistant
C) Machine ready
D) Metal rod
  • 36. Base metal we use:
A) Stainless steel
B) Cast iron
C) A36 mild steel
D) Aluminum
  • 37. Light produced in welding:
A) Blue spectrum only
B) Green infrared
C) X‑ray emissions
D) Electro violet and ultra red light
  • 38. Five joint types:
A) Curve, twist, bend, fold, lock
B) Lap, butt, edge, corner, T-joint
C) Root, face, toe, leg, web
D) Arc, gas, flux, rod, plate
  • 39. AWS:
A) Advanced Weld Standards
B) American Welding Society
C) American Wire Service
D) Arc Welding System
  • 40. Heat affected zone:
A) Metal altered but not melted
B) Slag-covered area
C) Joint line
D) Metal melted completely
  • 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) Flat fillet
B) Overhead fillet
C) Vertical fillet
D) Flat groove
  • 44. 2F
A) Horizontal groove
B) Vertical groove
C) Horizontal fillet
D) Flat Fillet
  • 45. 3F
A) Horizontal groove
B) Overhead fillet
C) Vertical fillet
D) Flat fillet
  • 46. 4F:
A) Flat groove
B) Overhead fillet
C) Horizontal fillet
D) Vertical fillet
  • 47. 1G:
A) Flat groove
B) Vertical groove
C) Flat fillet
D) Overhead groove
  • 48. 2G:
A) Vertical groove
B) Flat groove
C) Horizontal fillet
D) Horizontal groove
  • 49. 3G:
A) Horizontal fillet
B) Overhead groove
C) Flat groove
D) Vertical groove
  • 50. 4G:
A) Vertical groove
B) Overhead groove
C) Flat groove
D) Horizontal fillet
  • 51. Weave:
A) Weld bead made with transverse movement
B) Cleaning motion
C) Root buildup
D) Slag brushing
  • 52. No large amount of ______ should be in the weld
A) Oxygen
B) Hydrogen
C) Sulphur
D) Mercury
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