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