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