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12-11-25 Welding Midterm Review 2025
נתרם על ידי: Sandifer
  • 1. What is the base metal?
A) The flux coating
B) The shielding gas makes sparks
C) The metal to be welded
D) The weld bead
  • 2. What is an arc?
A) Light from welding
B) Flow of electricity through a gaseous space or air gap
C) A joint type that lets light fly around everywhere
D) A type of electrode
  • 3. What is arc length?
A) The distance from the electrode to the weld pool
B) The distance from the gap between plates and the clamp wire
C) Length of the weld
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 melted rod tip in the face of the weld
B) A buildup of slag in the face of the weld
C) A porosity pocket 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 center of weld metal
B) Imaginary line through weld toe
C) Imaginary line through HAZ boundary
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) Metal particles 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) Steel trapped in slag
B) Undercut failure
C) Hot cracks trapped in the weld pool at the end
D) Non-metallic material trapped in weld
  • 9. What is a joint?
A) filler metal
B) Location where two or more members are joined
C) a welding defect
D) The end of the metal piece that is welded first.
  • 10. What is a crater crack?
A) A stress fracture formed cause metal was too clean
B) A crack in the crater of a weld bead
C) A centerline crack
D) A cold shut
  • 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) Electrode burn rate is working nonstop
C) Arc stability rating
D) Percentage of time welders operate at rated output
  • 13. What is filler metal?
A) Flux coating
B) Metal added to make a welded joint
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) Rod penetration
D) Weld height
  • 15. What is penetration?
A) Slag depth
B) Bead surface depth
C) Arc reach
D) Extent weld metal combines with base metal
  • 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) Shielded Metal Arc Welding
B) Shielded Mechanical Arc Welding
C) Solid Metal Arc Welding
D) Stick Metal Arc Work
  • 18. What is SMAW?
A) Uses shielding gas
B) Uses heat of an arc between covered electrode and the work
C) Uses tungsten electrode
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) Requires gas bottles
B) It’s slow
C) Cannot weld steel
D) Only works indoors
  • 21. 7018 can use:
A) Neither
B) AC only
C) DC only
D) AC or DC
  • 22. What polarity do we weld with?
A) Straight polarity
B) Reverse polarity
C) No polarity
D) Alternating ground
  • 23. Reverse polarity:
A) Electrode is positive, ground negative
B) Ground floats
C) No polarity exists
D) Electrode negative
  • 24. Two safety points:
A) Proper ventilation and protective clothing
B) Use small rods and low heat
C) Avoid using gloves never safety glasses
D) Always weld outside use sitka gloves
  • 25. SMAW electrode:
A) Carbon rod
B) Consumable electrode covered with flux
C) TIG tungsten
D) MIG wire
  • 26. Strength of 7018 rod:
A) 120k psi
B) 70k psi
C) 18k psi
D) 40k psi
  • 27. Meaning of 3rd digit in 7018:
A) Coating type
B) Rod length
C) Positive polarity rod
D) Welding position
  • 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) Inert, reactive, passive, active
C) High carbon, low carbon, stainless, alloy
D) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
  • 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) 250°F
B) 100°F
C) 500°F
D) 175°F
  • 33. E stands for:
A) Energy
B) Electrode
C) Earth
D) Edge
  • 34. Rod lengths:
A) 1–2 feet
B) 9–18 inches
C) 20–30 inches
D) 3–6 inches
  • 35. MR or R:
A) Machine ready
B) Moisture resistant
C) Medium rated
D) Metal rod
  • 36. Base metal we use:
A) Cast iron
B) A36 mild steel
C) Aluminum
D) Stainless steel
  • 37. Light produced in welding:
A) Electro violet and ultra red light
B) X‑ray emissions
C) Green infrared
D) Blue spectrum only
  • 38. Five joint types:
A) Lap, butt, edge, corner, T-joint
B) Arc, gas, flux, rod, plate
C) Curve, twist, bend, fold, lock
D) Root, face, toe, leg, web
  • 39. AWS:
A) American Welding Society
B) Advanced Weld Standards
C) American Wire Service
D) Arc Welding System
  • 40. Heat affected zone:
A) Joint line
B) Metal melted completely
C) Slag-covered area
D) Metal altered but not melted
  • 41. PJP:
A) Primary Joint Preparation
B) Partial Joint Penetration
C) Pressure Joint Process
D) Parallel Joint Pass
  • 42. CJP:
A) Complete Joint Penetration
B) Controlled Joint Process
C) Central Joint Plane
D) Cut Joint Position
  • 43. 1F:
A) Vertical fillet
B) Flat fillet
C) Overhead fillet
D) Flat groove
  • 44. 2F
A) Horizontal groove
B) Flat Fillet
C) Horizontal fillet
D) Vertical groove
  • 45. 3F
A) Vertical fillet
B) Flat fillet
C) Overhead fillet
D) Horizontal groove
  • 46. 4F:
A) Vertical fillet
B) Flat groove
C) Horizontal fillet
D) Overhead fillet
  • 47. 1G:
A) Vertical groove
B) Flat groove
C) Flat fillet
D) Overhead groove
  • 48. 2G:
A) Horizontal groove
B) Flat groove
C) Horizontal fillet
D) Vertical groove
  • 49. 3G:
A) Flat groove
B) Horizontal fillet
C) Overhead groove
D) Vertical groove
  • 50. 4G:
A) Horizontal fillet
B) Vertical groove
C) Overhead groove
D) Flat groove
  • 51. Weave:
A) Root buildup
B) Weld bead made with transverse movement
C) Cleaning motion
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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