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12-11-25 Welding Midterm Review 2025
נתרם על ידי: Sandifer
  • 1. What is the base metal?
A) The weld bead
B) The flux coating
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) The distance from the gap between plates and the clamp wire
B) Length of the weld
C) The distance from the electrode to the weld pool
D) Length of the rod
  • 4. What is undercut?
A) A surface crack
B) Extra filler metal
C) A groove melted into base metal left unfilled
D) A grove melted into the base metal that is a misaligned joint
  • 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 melted rod tip in the face of the weld
D) A buildup of slag 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 weld toe
C) Imaginary line through HAZ boundary
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) Arc blow expelled that do not form part of the weld
C) Falling flux 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) Non-metallic material trapped in weld
C) Undercut failure
D) Hot cracks trapped in the weld pool at the end
  • 9. What is a joint?
A) a welding defect
B) The end of the metal piece that is welded first.
C) Location where two or more members are joined
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 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) 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) Metal base plate
C) Flux coating
D) Distance fusion extends into base metal
  • 14. What is depth of fusion?
A) Weld height
B) Distance fusion extends into base metal
C) Rod penetration
D) Distance bead width extends
  • 15. What is penetration?
A) Slag depth
B) Extent weld metal combines with base metal
C) Bead surface depth
D) Arc reach
  • 16. What is deposition rate?
A) Amount of slag produced
B) Weight of metal deposited per unit time
C) Heat generated
D) Length welded per hour
  • 17. What does SMAW stand for?
A) Stick Metal Arc Work
B) Shielded Mechanical Arc Welding
C) Solid Metal Arc Welding
D) Shielded Metal 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) Requires gas bottles
B) It’s slow
C) Cannot weld steel
D) Only works indoors
  • 21. 7018 can use:
A) DC only
B) AC only
C) Neither
D) AC or DC
  • 22. What polarity do we weld with?
A) Reverse polarity
B) Alternating ground
C) Straight polarity
D) No polarity
  • 23. Reverse polarity:
A) Electrode negative
B) No polarity exists
C) Ground floats
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Proper ventilation and protective clothing
B) Use small rods and low heat
C) Always weld outside use sitka gloves
D) Avoid using gloves never safety glasses
  • 25. SMAW electrode:
A) TIG tungsten
B) Consumable electrode covered with flux
C) Carbon rod
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) Welding position
B) Positive polarity rod
C) Rod length
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Composition of rod
B) Arc length
C) Diameter
D) Strength
  • 29. Four rod groups:
A) Inert, reactive, passive, active
B) Soft rods, hard rods, hot rods, cold rods
C) High carbon, low carbon, stainless, alloy
D) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
  • 30. DCEP:
A) Direct Current Electrode Positive
B) Dual Current Electrode Phase
C) Direct Coil Energy Pulse
D) Direct Current Elevated Pressure
  • 31. Why put rods in oven?
A) heat for penetration
B) Prevent Bending
C) Reduce moisture
D) sterilize
  • 32. Minimum oven temperature?
A) 250°F
B) 500°F
C) 100°F
D) 175°F
  • 33. E stands for:
A) Electrode
B) Energy
C) Earth
D) Edge
  • 34. Rod lengths:
A) 1–2 feet
B) 20–30 inches
C) 9–18 inches
D) 3–6 inches
  • 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) Aluminum
C) Cast iron
D) Stainless steel
  • 37. Light produced in welding:
A) Electro violet and ultra red light
B) X‑ray emissions
C) Blue spectrum only
D) Green infrared
  • 38. Five joint types:
A) Lap, butt, edge, corner, T-joint
B) Arc, gas, flux, rod, plate
C) Root, face, toe, leg, web
D) Curve, twist, bend, fold, lock
  • 39. AWS:
A) American Welding Society
B) American Wire Service
C) Arc Welding System
D) Advanced Weld Standards
  • 40. Heat affected zone:
A) Metal melted completely
B) Joint line
C) Slag-covered area
D) Metal altered but not melted
  • 41. PJP:
A) Pressure Joint Process
B) Primary Joint Preparation
C) Partial Joint Penetration
D) Parallel Joint Pass
  • 42. CJP:
A) Central Joint Plane
B) Complete Joint Penetration
C) Cut Joint Position
D) Controlled Joint Process
  • 43. 1F:
A) Vertical fillet
B) Flat groove
C) Overhead fillet
D) Flat fillet
  • 44. 2F
A) Flat Fillet
B) Vertical groove
C) Horizontal fillet
D) Horizontal groove
  • 45. 3F
A) Flat fillet
B) Overhead fillet
C) Horizontal groove
D) Vertical fillet
  • 46. 4F:
A) Flat groove
B) Vertical fillet
C) Horizontal fillet
D) Overhead fillet
  • 47. 1G:
A) Flat fillet
B) Vertical groove
C) Overhead groove
D) Flat groove
  • 48. 2G:
A) Horizontal groove
B) Flat groove
C) Horizontal fillet
D) Vertical groove
  • 49. 3G:
A) Horizontal fillet
B) Flat groove
C) Vertical groove
D) Overhead groove
  • 50. 4G:
A) Horizontal fillet
B) Overhead groove
C) Flat groove
D) Vertical 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) Oxygen
B) Sulphur
C) Hydrogen
D) Mercury
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