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12-11-25 Welding Midterm Review 2025
Hauen laguntzarekin: Sandifer
  • 1. What is the base metal?
A) The shielding gas makes sparks
B) The flux coating
C) The metal to be welded
D) The weld bead
  • 2. What is an arc?
A) Light from welding
B) A type of electrode
C) Flow of electricity through a gaseous space or air gap
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 rod
C) Length of the weld
D) The distance from the electrode to the weld pool
  • 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 melted rod tip 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 porosity pocket 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 center of weld metal
C) Imaginary line through weld toe
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) Metal particles expelled that do not form part of the weld
D) Arc blow 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) filler metal
B) The end of the metal piece that is welded first.
C) a welding defect
D) Location where two or more members are joined
  • 10. What is a crater crack?
A) A crack in the crater of a weld bead
B) A cold shut
C) A stress fracture formed cause metal was too clean
D) A centerline crack
  • 11. What is ductility
A) Ability to remain cold.
B) Ability to resist rust
C) Ability to deform without failure
D) Ability to stay magnetized
  • 12. What is duty cycle?
A) Percentage of time welders operate at rated output
B) Machine lifespan over a 10 min period
C) Electrode burn rate is working nonstop
D) Arc stability rating
  • 13. What is filler metal?
A) Flux coating
B) Metal base plate
C) Metal added to make a welded joint
D) Distance fusion extends into base metal
  • 14. What is depth of fusion?
A) Distance fusion extends into base metal
B) Rod penetration
C) Distance bead width extends
D) Weld height
  • 15. What is penetration?
A) Arc reach
B) Slag depth
C) Extent weld metal combines with base metal
D) Bead surface depth
  • 16. What is deposition rate?
A) Length welded per hour
B) Amount of slag produced
C) Heat generated
D) Weight of metal deposited per unit time
  • 17. What does SMAW stand for?
A) Stick Metal Arc Work
B) Solid Metal Arc Welding
C) Shielded Mechanical Arc Welding
D) Shielded Metal Arc Welding
  • 18. What is SMAW?
A) Purely mechanical process
B) Uses tungsten electrode
C) Uses shielding gas
D) Uses heat of an arc between covered electrode and the work
  • 19. Advantage of SMAW?
A) High speed
B) Fully automated
C) Portable and inexpensive
D) No slag
  • 20. Disadvantage of SMAW?
A) Only works indoors
B) It’s slow
C) Requires gas bottles
D) Cannot weld steel
  • 21. 7018 can use:
A) AC or DC
B) Neither
C) DC only
D) AC only
  • 22. What polarity do we weld with?
A) Alternating ground
B) Reverse polarity
C) No polarity
D) Straight polarity
  • 23. Reverse polarity:
A) No polarity exists
B) Electrode is positive, ground negative
C) Electrode negative
D) Ground floats
  • 24. Two safety points:
A) Always weld outside use sitka gloves
B) Avoid using gloves never safety glasses
C) Use small rods and low heat
D) Proper ventilation and protective clothing
  • 25. SMAW electrode:
A) MIG wire
B) TIG tungsten
C) Carbon rod
D) Consumable electrode covered with flux
  • 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) Coating type
B) Rod length
C) Welding position
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) Soft rods, hard rods, hot rods, cold rods
C) High carbon, low carbon, stainless, alloy
D) Inert, reactive, passive, active
  • 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) sterilize
B) Reduce moisture
C) Prevent Bending
D) heat for penetration
  • 32. Minimum oven temperature?
A) 500°F
B) 100°F
C) 250°F
D) 175°F
  • 33. E stands for:
A) Earth
B) Energy
C) Edge
D) Electrode
  • 34. Rod lengths:
A) 3–6 inches
B) 1–2 feet
C) 20–30 inches
D) 9–18 inches
  • 35. MR or R:
A) Moisture resistant
B) Metal rod
C) Machine ready
D) Medium rated
  • 36. Base metal we use:
A) Aluminum
B) Cast iron
C) A36 mild steel
D) Stainless steel
  • 37. Light produced in welding:
A) Green infrared
B) X‑ray emissions
C) Blue spectrum only
D) Electro violet and ultra red light
  • 38. Five joint types:
A) Arc, gas, flux, rod, plate
B) Root, face, toe, leg, web
C) Lap, butt, edge, corner, T-joint
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) Metal melted completely
B) Slag-covered area
C) Joint line
D) Metal altered but not melted
  • 41. PJP:
A) Parallel Joint Pass
B) Partial Joint Penetration
C) Pressure Joint Process
D) Primary Joint Preparation
  • 42. CJP:
A) Controlled Joint Process
B) Complete Joint Penetration
C) Central Joint Plane
D) Cut Joint Position
  • 43. 1F:
A) Flat fillet
B) Vertical fillet
C) Flat groove
D) Overhead fillet
  • 44. 2F
A) Vertical groove
B) Horizontal fillet
C) Flat Fillet
D) Horizontal groove
  • 45. 3F
A) Vertical fillet
B) Horizontal groove
C) Overhead fillet
D) Flat fillet
  • 46. 4F:
A) Vertical fillet
B) Horizontal fillet
C) Flat groove
D) Overhead fillet
  • 47. 1G:
A) Flat groove
B) Overhead groove
C) Vertical groove
D) Flat fillet
  • 48. 2G:
A) Vertical groove
B) Horizontal groove
C) Horizontal fillet
D) Flat groove
  • 49. 3G:
A) Vertical groove
B) Flat groove
C) Horizontal fillet
D) Overhead groove
  • 50. 4G:
A) Vertical groove
B) Horizontal fillet
C) Flat groove
D) Overhead groove
  • 51. Weave:
A) Cleaning motion
B) Weld bead made with transverse movement
C) Slag brushing
D) Root buildup
  • 52. No large amount of ______ should be in the weld
A) Oxygen
B) Sulphur
C) Mercury
D) Hydrogen
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