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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 weld bead
C) The metal to be welded
D) The shielding gas makes sparks
  • 2. What is an arc?
A) A type of electrode
B) Flow of electricity through a gaseous space or air gap
C) Light from welding
D) A joint type that lets light fly around everywhere
  • 3. What is arc length?
A) Length of the rod
B) The distance from the electrode to the weld pool
C) The distance from the gap between plates and the clamp wire
D) Length of the weld
  • 4. What is undercut?
A) Extra filler metal
B) A grove melted into the base metal that is a misaligned joint
C) A groove melted into base metal left unfilled
D) A surface crack
  • 5. What is a crater?
A) A porosity pocket in the face of the weld
B) A depression in the face of the weld
C) A buildup of slag 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) Metal particles expelled that do not form part of the weld
C) Gas bubbles expelled that do not form part of the weld
D) Falling flux expelled that do not form part of the weld
  • 8. What is slag inclusion?
A) Non-metallic material trapped in weld
B) Undercut failure
C) Hot cracks trapped in the weld pool at the end
D) Steel trapped in slag
  • 9. What is a joint?
A) Location where two or more members are joined
B) The end of the metal piece that is welded first.
C) a welding defect
D) filler metal
  • 10. What is a crater crack?
A) A cold shut
B) A stress fracture formed cause metal was too clean
C) A centerline crack
D) A crack in the crater of a weld bead
  • 11. What is ductility
A) Ability to deform without failure
B) Ability to remain cold.
C) Ability to stay magnetized
D) Ability to resist rust
  • 12. What is duty cycle?
A) Electrode burn rate is working nonstop
B) Percentage of time welders operate at rated output
C) Machine lifespan over a 10 min period
D) Arc stability rating
  • 13. What is filler metal?
A) Distance fusion extends into base metal
B) Metal added to make a welded joint
C) Flux coating
D) Metal base plate
  • 14. What is depth of fusion?
A) Rod penetration
B) Distance fusion extends into base metal
C) Distance bead width extends
D) Weld height
  • 15. What is penetration?
A) Extent weld metal combines with base metal
B) Arc reach
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) Stick Metal Arc Work
B) Shielded Metal Arc Welding
C) Solid 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) Purely mechanical process
C) Uses shielding gas
D) Uses tungsten electrode
  • 19. Advantage of SMAW?
A) High speed
B) Fully automated
C) Portable and inexpensive
D) No slag
  • 20. Disadvantage of SMAW?
A) It’s slow
B) Requires gas bottles
C) Cannot weld steel
D) Only works indoors
  • 21. 7018 can use:
A) DC only
B) Neither
C) AC or DC
D) AC only
  • 22. What polarity do we weld with?
A) Reverse polarity
B) No polarity
C) Alternating ground
D) Straight polarity
  • 23. Reverse polarity:
A) No polarity exists
B) Electrode negative
C) Ground floats
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Proper ventilation and protective clothing
B) Avoid using gloves never safety glasses
C) Always weld outside use sitka gloves
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) 40k psi
B) 70k psi
C) 120k psi
D) 18k psi
  • 27. Meaning of 3rd digit in 7018:
A) Positive polarity rod
B) Welding position
C) Rod length
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Arc length
B) Diameter
C) Composition of rod
D) Strength
  • 29. Four rod groups:
A) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
B) Inert, reactive, passive, active
C) High carbon, low carbon, stainless, alloy
D) Soft rods, hard rods, hot rods, cold rods
  • 30. DCEP:
A) Direct Coil Energy Pulse
B) Direct Current Elevated Pressure
C) Direct Current Electrode Positive
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) 100°F
B) 500°F
C) 175°F
D) 250°F
  • 33. E stands for:
A) Energy
B) Electrode
C) Edge
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) Stainless steel
C) Cast iron
D) A36 mild steel
  • 37. Light produced in welding:
A) X‑ray emissions
B) Blue spectrum only
C) Electro violet and ultra red light
D) Green infrared
  • 38. Five joint types:
A) Lap, butt, edge, corner, T-joint
B) Root, face, toe, leg, web
C) Arc, gas, flux, rod, plate
D) Curve, twist, bend, fold, lock
  • 39. AWS:
A) Advanced Weld Standards
B) American Wire Service
C) Arc Welding System
D) American Welding Society
  • 40. Heat affected zone:
A) Joint line
B) Metal altered but not melted
C) Slag-covered area
D) Metal melted completely
  • 41. PJP:
A) Pressure Joint Process
B) Primary Joint Preparation
C) Parallel Joint Pass
D) Partial Joint Penetration
  • 42. CJP:
A) Central Joint Plane
B) Cut Joint Position
C) Complete Joint Penetration
D) Controlled Joint Process
  • 43. 1F:
A) Vertical fillet
B) Overhead fillet
C) Flat groove
D) Flat fillet
  • 44. 2F
A) Vertical groove
B) Horizontal fillet
C) Horizontal groove
D) Flat Fillet
  • 45. 3F
A) Overhead fillet
B) Vertical fillet
C) Horizontal groove
D) Flat fillet
  • 46. 4F:
A) Horizontal fillet
B) Overhead fillet
C) Vertical fillet
D) Flat groove
  • 47. 1G:
A) Flat groove
B) Overhead groove
C) Vertical groove
D) Flat fillet
  • 48. 2G:
A) Flat groove
B) Horizontal groove
C) Horizontal fillet
D) Vertical groove
  • 49. 3G:
A) Horizontal fillet
B) Vertical groove
C) Overhead groove
D) Flat groove
  • 50. 4G:
A) Flat groove
B) Vertical groove
C) Overhead groove
D) Horizontal fillet
  • 51. Weave:
A) Slag brushing
B) Cleaning motion
C) Weld bead made with transverse movement
D) Root buildup
  • 52. No large amount of ______ should be in the weld
A) Hydrogen
B) Mercury
C) Oxygen
D) Sulphur
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