12-11-25 Welding Midterm Review 2025
  • 1. What is the base metal?
A) The flux coating
B) The metal to be welded
C) The weld bead
D) The shielding gas makes sparks
  • 2. What is an arc?
A) A joint type that lets light fly around everywhere
B) A type of electrode
C) Light from welding
D) Flow of electricity through a gaseous space or air gap
  • 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 grove melted into the base metal that is a misaligned joint
B) A surface crack
C) Extra filler metal
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 depression 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 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) Gas bubbles expelled that do not form part of the weld
B) Falling flux 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) 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) The end of the metal piece that is welded first.
D) a welding defect
  • 10. What is a crater crack?
A) A stress fracture formed cause metal was too clean
B) A cold shut
C) A crack in the crater of a weld bead
D) A centerline crack
  • 11. What is ductility
A) Ability to resist rust
B) Ability to deform without failure
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) 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) Metal base plate
D) Flux coating
  • 14. What is depth of fusion?
A) Weld height
B) Distance fusion extends into base metal
C) Distance bead width extends
D) Rod penetration
  • 15. What is penetration?
A) Arc reach
B) Bead surface depth
C) Extent weld metal combines with base metal
D) Slag depth
  • 16. What is deposition rate?
A) Heat generated
B) Length welded per hour
C) Weight of metal deposited per unit time
D) Amount of slag produced
  • 17. What does SMAW stand for?
A) Shielded Metal Arc Welding
B) Solid Metal Arc Welding
C) Stick Metal Arc Work
D) Shielded Mechanical Arc Welding
  • 18. What is SMAW?
A) Uses heat of an arc between covered electrode and the work
B) Uses tungsten electrode
C) Purely mechanical process
D) Uses shielding gas
  • 19. Advantage of SMAW?
A) Fully automated
B) No slag
C) High speed
D) Portable and inexpensive
  • 20. Disadvantage of SMAW?
A) Cannot weld steel
B) Requires gas bottles
C) Only works indoors
D) It’s slow
  • 21. 7018 can use:
A) Neither
B) AC or DC
C) AC only
D) DC only
  • 22. What polarity do we weld with?
A) Reverse polarity
B) Straight polarity
C) No polarity
D) Alternating ground
  • 23. Reverse polarity:
A) Electrode is positive, ground negative
B) Ground floats
C) Electrode negative
D) No polarity exists
  • 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) Carbon rod
B) Consumable electrode covered with flux
C) TIG tungsten
D) MIG wire
  • 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) Coating type
B) Welding position
C) Rod length
D) Positive polarity rod
  • 28. Meaning of 4th digit in 7018:
A) Diameter
B) Strength
C) Arc length
D) Composition of rod
  • 29. Four rod groups:
A) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
B) High carbon, low carbon, stainless, alloy
C) Inert, reactive, passive, active
D) Soft rods, hard rods, hot rods, cold rods
  • 30. DCEP:
A) Dual Current Electrode Phase
B) Direct Current Electrode Positive
C) Direct Current Elevated Pressure
D) Direct Coil Energy Pulse
  • 31. Why put rods in oven?
A) sterilize
B) heat for penetration
C) Reduce moisture
D) Prevent Bending
  • 32. Minimum oven temperature?
A) 175°F
B) 250°F
C) 100°F
D) 500°F
  • 33. E stands for:
A) Edge
B) Earth
C) Electrode
D) Energy
  • 34. Rod lengths:
A) 20–30 inches
B) 1–2 feet
C) 3–6 inches
D) 9–18 inches
  • 35. MR or R:
A) Medium rated
B) Metal rod
C) Machine ready
D) Moisture resistant
  • 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) Root, face, toe, leg, web
B) Lap, butt, edge, corner, T-joint
C) Arc, gas, flux, rod, plate
D) Curve, twist, bend, fold, lock
  • 39. AWS:
A) Advanced Weld Standards
B) American Welding Society
C) Arc Welding System
D) American Wire Service
  • 40. Heat affected zone:
A) Joint line
B) Slag-covered area
C) Metal melted completely
D) Metal altered but not melted
  • 41. PJP:
A) Primary Joint Preparation
B) Pressure Joint Process
C) Partial Joint Penetration
D) Parallel Joint Pass
  • 42. CJP:
A) Complete Joint Penetration
B) Cut Joint Position
C) Controlled Joint Process
D) Central Joint Plane
  • 43. 1F:
A) Vertical fillet
B) Overhead fillet
C) Flat fillet
D) Flat groove
  • 44. 2F
A) Flat Fillet
B) Horizontal fillet
C) Horizontal groove
D) Vertical groove
  • 45. 3F
A) Vertical fillet
B) Flat fillet
C) Horizontal groove
D) Overhead fillet
  • 46. 4F:
A) Vertical fillet
B) Horizontal fillet
C) Overhead fillet
D) Flat groove
  • 47. 1G:
A) Overhead groove
B) Flat groove
C) Vertical groove
D) Flat fillet
  • 48. 2G:
A) Horizontal fillet
B) Horizontal groove
C) Vertical groove
D) Flat groove
  • 49. 3G:
A) Overhead groove
B) Vertical groove
C) Flat groove
D) Horizontal fillet
  • 50. 4G:
A) Vertical groove
B) Horizontal fillet
C) Overhead groove
D) Flat groove
  • 51. Weave:
A) Root buildup
B) Cleaning motion
C) Weld bead made with transverse movement
D) Slag brushing
  • 52. No large amount of ______ should be in the weld
A) Hydrogen
B) Oxygen
C) Sulphur
D) Mercury
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