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