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12-11-25 Welding Midterm Review 2025
Συνεισφορά από: Sandifer
  • 1. What is the base metal?
A) The shielding gas makes sparks
B) The flux coating
C) The metal to be welded
D) The weld bead
  • 2. What is an arc?
A) Flow of electricity through a gaseous space or air gap
B) A joint type that lets light fly around everywhere
C) A type of electrode
D) Light from welding
  • 3. What is arc length?
A) The distance from the electrode to the weld pool
B) Length of the weld
C) The distance from the gap between plates and the clamp wire
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 buildup of slag 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 porosity pocket 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 HAZ boundary
C) Imaginary line through weld toe
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) Falling flux expelled that do not form part of the weld
C) Metal particles expelled that do not form part of the weld
D) Arc blow 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) Undercut failure
D) Non-metallic material trapped in weld
  • 9. What is a joint?
A) Location where two or more members are joined
B) filler metal
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 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 remain cold.
B) Ability to deform without failure
C) Ability to stay magnetized
D) Ability to resist rust
  • 12. What is duty cycle?
A) Arc stability rating
B) Percentage of time welders operate at rated output
C) Machine lifespan over a 10 min period
D) Electrode burn rate is working nonstop
  • 13. What is filler metal?
A) Metal base plate
B) Flux coating
C) Distance fusion extends into base metal
D) Metal added to make a welded joint
  • 14. What is depth of fusion?
A) Distance fusion extends into base metal
B) Weld height
C) Distance bead width extends
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) Weight of metal deposited per unit time
B) Length welded per hour
C) Amount of slag produced
D) Heat generated
  • 17. What does SMAW stand for?
A) Shielded Mechanical Arc Welding
B) Shielded Metal Arc Welding
C) Solid Metal Arc Welding
D) Stick Metal Arc Work
  • 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) No slag
B) High speed
C) Fully automated
D) Portable and inexpensive
  • 20. Disadvantage of SMAW?
A) Only works indoors
B) Requires gas bottles
C) It’s slow
D) Cannot weld steel
  • 21. 7018 can use:
A) AC or DC
B) DC only
C) AC only
D) Neither
  • 22. What polarity do we weld with?
A) Straight polarity
B) Alternating ground
C) Reverse polarity
D) No polarity
  • 23. Reverse polarity:
A) Electrode is positive, ground negative
B) Ground floats
C) No polarity exists
D) Electrode negative
  • 24. Two safety points:
A) Use small rods and low heat
B) Proper ventilation and protective clothing
C) Always weld outside use sitka gloves
D) Avoid using gloves never safety glasses
  • 25. SMAW electrode:
A) MIG wire
B) Consumable electrode covered with flux
C) Carbon rod
D) TIG tungsten
  • 26. Strength of 7018 rod:
A) 40k psi
B) 120k psi
C) 70k psi
D) 18k psi
  • 27. Meaning of 3rd digit in 7018:
A) Positive polarity rod
B) Rod length
C) Coating type
D) Welding position
  • 28. Meaning of 4th digit in 7018:
A) Diameter
B) Arc length
C) Strength
D) Composition of rod
  • 29. Four rod groups:
A) Inert, reactive, passive, active
B) High carbon, low carbon, stainless, alloy
C) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
D) Soft rods, hard rods, hot rods, cold rods
  • 30. DCEP:
A) Dual Current Electrode Phase
B) Direct Coil Energy Pulse
C) Direct Current Elevated Pressure
D) Direct Current Electrode Positive
  • 31. Why put rods in oven?
A) sterilize
B) Prevent Bending
C) Reduce moisture
D) heat for penetration
  • 32. Minimum oven temperature?
A) 500°F
B) 175°F
C) 250°F
D) 100°F
  • 33. E stands for:
A) Earth
B) Electrode
C) Edge
D) Energy
  • 34. Rod lengths:
A) 20–30 inches
B) 3–6 inches
C) 9–18 inches
D) 1–2 feet
  • 35. MR or R:
A) Machine ready
B) Medium rated
C) Moisture resistant
D) Metal rod
  • 36. Base metal we use:
A) Aluminum
B) Cast iron
C) A36 mild steel
D) Stainless steel
  • 37. Light produced in welding:
A) X‑ray emissions
B) Green infrared
C) Blue spectrum only
D) Electro violet and ultra red light
  • 38. Five joint types:
A) Lap, butt, edge, corner, T-joint
B) Root, face, toe, leg, web
C) Curve, twist, bend, fold, lock
D) Arc, gas, flux, rod, plate
  • 39. AWS:
A) American Welding Society
B) American Wire Service
C) Arc Welding System
D) Advanced Weld Standards
  • 40. Heat affected zone:
A) Metal altered but not melted
B) Metal melted completely
C) Slag-covered area
D) Joint line
  • 41. PJP:
A) Partial Joint Penetration
B) Parallel Joint Pass
C) Pressure Joint Process
D) Primary Joint Preparation
  • 42. CJP:
A) Controlled Joint Process
B) Cut Joint Position
C) Central Joint Plane
D) Complete Joint Penetration
  • 43. 1F:
A) Flat fillet
B) Overhead fillet
C) Flat groove
D) Vertical fillet
  • 44. 2F
A) Flat Fillet
B) Horizontal groove
C) Vertical groove
D) Horizontal fillet
  • 45. 3F
A) Overhead fillet
B) Horizontal groove
C) Flat fillet
D) Vertical fillet
  • 46. 4F:
A) Overhead fillet
B) Horizontal fillet
C) Flat groove
D) Vertical fillet
  • 47. 1G:
A) Vertical groove
B) Flat fillet
C) Overhead groove
D) Flat groove
  • 48. 2G:
A) Horizontal fillet
B) Vertical groove
C) Horizontal groove
D) Flat groove
  • 49. 3G:
A) Flat groove
B) Overhead groove
C) Horizontal fillet
D) Vertical groove
  • 50. 4G:
A) Overhead groove
B) Flat groove
C) Horizontal fillet
D) Vertical groove
  • 51. Weave:
A) Weld bead made with transverse movement
B) Slag brushing
C) Root buildup
D) Cleaning motion
  • 52. No large amount of ______ should be in the weld
A) Mercury
B) Sulphur
C) Hydrogen
D) Oxygen
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