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12-11-25 Welding Midterm Review 2025
Közreműködött: Sandifer
  • 1. What is the base metal?
A) The weld bead
B) The flux coating
C) The metal to be welded
D) The shielding gas makes sparks
  • 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) The distance from the gap between plates and the clamp wire
B) Length of the rod
C) The distance from the electrode to the weld pool
D) Length of the weld
  • 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 depression 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 porosity pocket in the face of the weld
  • 6. What is the axis of weld?
A) Imaginary line through weld toe
B) Imaginary line through center of weld metal
C) Imaginary line through HAZ boundary
D) Imaginary line through top of the bead
  • 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) Falling flux expelled that do not form part of the weld
D) Gas bubbles 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) Undercut failure
D) Steel trapped in slag
  • 9. What is a joint?
A) The end of the metal piece that is welded first.
B) Location where two or more members are joined
C) filler metal
D) a welding defect
  • 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 deform without failure
B) Ability to resist rust
C) Ability to stay magnetized
D) Ability to remain cold.
  • 12. What is duty cycle?
A) Percentage of time welders operate at rated output
B) Machine lifespan over a 10 min period
C) Electrode burn rate is working nonstop
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) Distance fusion extends into base metal
B) Distance bead width extends
C) Weld height
D) Rod penetration
  • 15. What is penetration?
A) Bead surface depth
B) Slag depth
C) Extent weld metal combines with base metal
D) Arc reach
  • 16. What is deposition rate?
A) Amount of slag produced
B) Heat generated
C) Length welded per hour
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 Metal Arc Welding
D) Shielded Mechanical Arc Welding
  • 18. What is SMAW?
A) Uses heat of an arc between covered electrode and the work
B) Uses tungsten electrode
C) Purely mechanical process
D) Uses shielding gas
  • 19. Advantage of SMAW?
A) High speed
B) No slag
C) Portable and inexpensive
D) Fully automated
  • 20. Disadvantage of SMAW?
A) Requires gas bottles
B) It’s slow
C) Only works indoors
D) Cannot weld steel
  • 21. 7018 can use:
A) Neither
B) DC only
C) AC only
D) AC or DC
  • 22. What polarity do we weld with?
A) Reverse polarity
B) Straight polarity
C) No polarity
D) Alternating ground
  • 23. Reverse polarity:
A) Electrode negative
B) Electrode is positive, ground negative
C) No polarity exists
D) Ground floats
  • 24. Two safety points:
A) Always weld outside use sitka gloves
B) Avoid using gloves never safety glasses
C) Proper ventilation and protective clothing
D) Use small rods and low heat
  • 25. SMAW electrode:
A) MIG wire
B) Consumable electrode covered with flux
C) Carbon rod
D) TIG tungsten
  • 26. Strength of 7018 rod:
A) 70k psi
B) 40k psi
C) 120k psi
D) 18k psi
  • 27. Meaning of 3rd digit in 7018:
A) Rod length
B) Coating type
C) Welding position
D) Positive polarity rod
  • 28. Meaning of 4th digit in 7018:
A) Strength
B) Composition of rod
C) Arc length
D) Diameter
  • 29. Four rod groups:
A) Soft rods, hard rods, hot rods, cold rods
B) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
C) Inert, reactive, passive, active
D) High carbon, low carbon, stainless, alloy
  • 30. DCEP:
A) Direct Coil Energy Pulse
B) Direct Current Elevated Pressure
C) Dual Current Electrode Phase
D) Direct Current Electrode Positive
  • 31. Why put rods in oven?
A) Reduce moisture
B) heat for penetration
C) Prevent Bending
D) sterilize
  • 32. Minimum oven temperature?
A) 500°F
B) 250°F
C) 175°F
D) 100°F
  • 33. E stands for:
A) Energy
B) Electrode
C) Earth
D) Edge
  • 34. Rod lengths:
A) 3–6 inches
B) 20–30 inches
C) 9–18 inches
D) 1–2 feet
  • 35. MR or R:
A) Medium rated
B) Metal rod
C) Machine ready
D) Moisture resistant
  • 36. Base metal we use:
A) A36 mild steel
B) Stainless steel
C) Cast iron
D) Aluminum
  • 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) Curve, twist, bend, fold, lock
B) Lap, butt, edge, corner, T-joint
C) Arc, gas, flux, rod, plate
D) Root, face, toe, leg, web
  • 39. AWS:
A) American Welding Society
B) American Wire Service
C) Arc Welding System
D) Advanced Weld Standards
  • 40. Heat affected zone:
A) Metal melted completely
B) Metal altered but not melted
C) Joint line
D) Slag-covered area
  • 41. PJP:
A) Partial Joint Penetration
B) Parallel Joint Pass
C) Pressure Joint Process
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) Overhead fillet
B) Vertical fillet
C) Flat fillet
D) Flat groove
  • 44. 2F
A) Horizontal groove
B) Horizontal fillet
C) Flat Fillet
D) Vertical groove
  • 45. 3F
A) Vertical fillet
B) Overhead fillet
C) Horizontal groove
D) Flat fillet
  • 46. 4F:
A) Horizontal fillet
B) Overhead fillet
C) Vertical fillet
D) Flat groove
  • 47. 1G:
A) Vertical groove
B) Flat fillet
C) Overhead groove
D) Flat groove
  • 48. 2G:
A) Horizontal groove
B) Flat groove
C) Horizontal fillet
D) Vertical groove
  • 49. 3G:
A) Vertical groove
B) Flat groove
C) Overhead groove
D) Horizontal fillet
  • 50. 4G:
A) Overhead groove
B) Flat groove
C) Vertical groove
D) Horizontal fillet
  • 51. Weave:
A) Root buildup
B) Slag brushing
C) Cleaning motion
D) Weld bead made with transverse movement
  • 52. No large amount of ______ should be in the weld
A) Sulphur
B) Hydrogen
C) Mercury
D) Oxygen
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