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12-11-25 Welding Midterm Review 2025
أسهم بواسطة: Sandifer
  • 1. What is the base metal?
A) The metal to be welded
B) The weld bead
C) The flux coating
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 weld
B) Length of the rod
C) The distance from the gap between plates and the clamp wire
D) The distance from the electrode to the weld pool
  • 4. What is undercut?
A) A groove melted into base metal left unfilled
B) A surface crack
C) A grove melted into the base metal that is a misaligned joint
D) Extra filler metal
  • 5. What is a crater?
A) A depression in the face of the weld
B) A buildup of slag in the face of the weld
C) A melted rod tip 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) Arc blow expelled that do not form part of the weld
B) Falling flux expelled that do not form part of the weld
C) Gas bubbles 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) Undercut failure
C) Steel trapped in slag
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 crack in the crater of a weld bead
B) A centerline crack
C) A stress fracture formed cause metal was too clean
D) A cold shut
  • 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) Electrode burn rate is working nonstop
B) Percentage of time welders operate at rated output
C) Arc stability rating
D) Machine lifespan over a 10 min period
  • 13. What is filler metal?
A) Metal base plate
B) Metal added to make a welded joint
C) Distance fusion extends into base metal
D) Flux coating
  • 14. What is depth of fusion?
A) Weld height
B) Distance bead width extends
C) Distance fusion extends into base metal
D) Rod penetration
  • 15. What is penetration?
A) Bead surface depth
B) Slag depth
C) Arc reach
D) Extent weld metal combines with base metal
  • 16. What is deposition rate?
A) Length welded per hour
B) Amount of slag produced
C) Weight of metal deposited per unit time
D) Heat generated
  • 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 tungsten electrode
B) Purely mechanical process
C) Uses heat of an arc between covered electrode and the work
D) Uses shielding gas
  • 19. Advantage of SMAW?
A) High speed
B) No slag
C) Fully automated
D) Portable and inexpensive
  • 20. Disadvantage of SMAW?
A) Only works indoors
B) It’s slow
C) Cannot weld steel
D) Requires gas bottles
  • 21. 7018 can use:
A) Neither
B) AC only
C) AC or DC
D) DC only
  • 22. What polarity do we weld with?
A) Straight polarity
B) Reverse polarity
C) Alternating ground
D) No polarity
  • 23. Reverse polarity:
A) Ground floats
B) Electrode negative
C) No polarity exists
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Avoid using gloves never safety glasses
B) Use small rods and low heat
C) Proper ventilation and protective clothing
D) Always weld outside use sitka gloves
  • 25. SMAW electrode:
A) TIG tungsten
B) MIG wire
C) Consumable electrode covered with flux
D) Carbon rod
  • 26. Strength of 7018 rod:
A) 40k psi
B) 18k psi
C) 120k psi
D) 70k psi
  • 27. Meaning of 3rd digit in 7018:
A) Coating type
B) Positive polarity rod
C) Welding position
D) Rod length
  • 28. Meaning of 4th digit in 7018:
A) Arc length
B) Composition of rod
C) Diameter
D) Strength
  • 29. Four rod groups:
A) Inert, reactive, passive, active
B) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
C) Soft rods, hard rods, hot rods, cold rods
D) High carbon, low carbon, stainless, alloy
  • 30. DCEP:
A) Direct Coil Energy Pulse
B) Dual Current Electrode Phase
C) Direct Current Elevated Pressure
D) Direct Current Electrode Positive
  • 31. Why put rods in oven?
A) Prevent Bending
B) sterilize
C) Reduce moisture
D) heat for penetration
  • 32. Minimum oven temperature?
A) 250°F
B) 175°F
C) 100°F
D) 500°F
  • 33. E stands for:
A) Edge
B) Earth
C) Energy
D) Electrode
  • 34. Rod lengths:
A) 3–6 inches
B) 20–30 inches
C) 9–18 inches
D) 1–2 feet
  • 35. MR or R:
A) Medium rated
B) Machine ready
C) Moisture resistant
D) Metal rod
  • 36. Base metal we use:
A) Stainless steel
B) A36 mild steel
C) Aluminum
D) Cast iron
  • 37. Light produced in welding:
A) Green infrared
B) Blue spectrum only
C) Electro violet and ultra red light
D) X‑ray emissions
  • 38. Five joint types:
A) Arc, gas, flux, rod, plate
B) Root, face, toe, leg, web
C) Curve, twist, bend, fold, lock
D) Lap, butt, edge, corner, T-joint
  • 39. AWS:
A) Arc Welding System
B) Advanced Weld Standards
C) American Wire Service
D) American Welding Society
  • 40. Heat affected zone:
A) Metal melted completely
B) Slag-covered area
C) Metal altered but not melted
D) Joint line
  • 41. PJP:
A) Primary Joint Preparation
B) Partial Joint Penetration
C) Parallel Joint Pass
D) Pressure Joint Process
  • 42. CJP:
A) Controlled Joint Process
B) Central Joint Plane
C) Complete Joint Penetration
D) Cut Joint Position
  • 43. 1F:
A) Vertical fillet
B) Flat fillet
C) Flat groove
D) Overhead fillet
  • 44. 2F
A) Horizontal fillet
B) Horizontal groove
C) Vertical groove
D) Flat Fillet
  • 45. 3F
A) Vertical fillet
B) Flat fillet
C) Horizontal groove
D) Overhead fillet
  • 46. 4F:
A) Overhead fillet
B) Horizontal fillet
C) Flat groove
D) Vertical fillet
  • 47. 1G:
A) Overhead groove
B) Flat groove
C) Vertical groove
D) Flat fillet
  • 48. 2G:
A) Vertical groove
B) Horizontal fillet
C) Horizontal groove
D) Flat groove
  • 49. 3G:
A) Vertical groove
B) Horizontal fillet
C) Overhead groove
D) Flat groove
  • 50. 4G:
A) Horizontal fillet
B) Overhead groove
C) Flat groove
D) Vertical groove
  • 51. Weave:
A) Weld bead made with transverse movement
B) Slag brushing
C) Cleaning motion
D) Root buildup
  • 52. No large amount of ______ should be in the weld
A) Mercury
B) Hydrogen
C) Sulphur
D) Oxygen
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