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12-11-25 Welding Midterm Review 2025
أسهم بواسطة: Sandifer
  • 1. What is the base metal?
A) The shielding gas makes sparks
B) The weld bead
C) The flux coating
D) The metal to be welded
  • 2. What is an arc?
A) A joint type that lets light fly around everywhere
B) A type of electrode
C) Flow of electricity through a gaseous space or air gap
D) Light from welding
  • 3. What is arc length?
A) The distance from the electrode to the weld pool
B) The distance from the gap between plates and the clamp wire
C) Length of the weld
D) Length of the rod
  • 4. What is undercut?
A) A grove melted into the base metal that is a misaligned joint
B) A groove melted into base metal left unfilled
C) Extra filler metal
D) A surface crack
  • 5. What is a crater?
A) A depression in the face of the weld
B) A melted rod tip 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 weld toe
B) Imaginary line through top of the bead
C) Imaginary line through HAZ boundary
D) Imaginary line through center of weld metal
  • 7. What is spatter?
A) Metal particles expelled that do not form part of the weld
B) Gas bubbles expelled that do not form part of the weld
C) Falling flux 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) Non-metallic material trapped in weld
B) Steel trapped in slag
C) Hot cracks trapped in the weld pool at the end
D) Undercut failure
  • 9. What is a joint?
A) filler metal
B) Location where two or more members are joined
C) a welding defect
D) The end of the metal piece that is welded first.
  • 10. What is a crater crack?
A) A cold shut
B) A crack in the crater of a weld bead
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) Arc stability rating
D) Electrode burn rate is working nonstop
  • 13. What is filler metal?
A) Flux coating
B) Metal base plate
C) Distance fusion extends into base metal
D) Metal added to make a welded joint
  • 14. What is depth of fusion?
A) Distance fusion extends into base metal
B) Weld height
C) Distance bead width extends
D) Rod penetration
  • 15. What is penetration?
A) Slag depth
B) Bead surface depth
C) Extent weld metal combines with base metal
D) Arc reach
  • 16. What is deposition rate?
A) Amount of slag produced
B) Heat generated
C) Weight of metal deposited per unit time
D) Length welded per hour
  • 17. What does SMAW stand for?
A) Solid Metal Arc Welding
B) Stick Metal Arc Work
C) Shielded Metal Arc Welding
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) Uses shielding gas
D) Purely mechanical process
  • 19. Advantage of SMAW?
A) Portable and inexpensive
B) High speed
C) No slag
D) Fully automated
  • 20. Disadvantage of SMAW?
A) Cannot weld steel
B) It’s slow
C) Only works indoors
D) Requires gas bottles
  • 21. 7018 can use:
A) DC only
B) AC or DC
C) AC only
D) Neither
  • 22. What polarity do we weld with?
A) Reverse polarity
B) No polarity
C) Straight polarity
D) Alternating ground
  • 23. Reverse polarity:
A) Ground floats
B) No polarity exists
C) Electrode is positive, ground negative
D) Electrode negative
  • 24. Two safety points:
A) Use small rods and low heat
B) Avoid using gloves never safety glasses
C) Always weld outside use sitka gloves
D) Proper ventilation and protective clothing
  • 25. SMAW electrode:
A) Consumable electrode covered with flux
B) MIG wire
C) Carbon rod
D) TIG tungsten
  • 26. Strength of 7018 rod:
A) 120k psi
B) 18k psi
C) 70k psi
D) 40k psi
  • 27. Meaning of 3rd digit in 7018:
A) Coating type
B) Welding position
C) Positive polarity rod
D) Rod length
  • 28. Meaning of 4th digit in 7018:
A) Composition of rod
B) Diameter
C) Strength
D) Arc length
  • 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) Dual Current Electrode Phase
B) Direct Current Elevated Pressure
C) Direct Coil Energy Pulse
D) Direct Current Electrode Positive
  • 31. Why put rods in oven?
A) sterilize
B) Reduce moisture
C) Prevent Bending
D) heat for penetration
  • 32. Minimum oven temperature?
A) 250°F
B) 500°F
C) 175°F
D) 100°F
  • 33. E stands for:
A) Earth
B) Edge
C) Electrode
D) Energy
  • 34. Rod lengths:
A) 9–18 inches
B) 3–6 inches
C) 20–30 inches
D) 1–2 feet
  • 35. MR or R:
A) Moisture resistant
B) Medium rated
C) Metal rod
D) Machine ready
  • 36. Base metal we use:
A) A36 mild steel
B) Cast iron
C) Aluminum
D) Stainless steel
  • 37. Light produced in welding:
A) Green infrared
B) Blue spectrum only
C) X‑ray emissions
D) Electro violet and ultra red light
  • 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) Arc Welding System
B) American Wire Service
C) American Welding Society
D) Advanced Weld Standards
  • 40. Heat affected zone:
A) Metal melted completely
B) Metal altered but not melted
C) Joint line
D) Slag-covered area
  • 41. PJP:
A) Partial Joint Penetration
B) Parallel Joint Pass
C) Pressure Joint Process
D) Primary Joint Preparation
  • 42. CJP:
A) Complete Joint Penetration
B) Controlled Joint Process
C) Central Joint Plane
D) Cut Joint Position
  • 43. 1F:
A) Overhead fillet
B) Flat groove
C) Vertical fillet
D) Flat fillet
  • 44. 2F
A) Flat Fillet
B) Vertical groove
C) Horizontal fillet
D) Horizontal groove
  • 45. 3F
A) Horizontal groove
B) Vertical fillet
C) Overhead fillet
D) Flat fillet
  • 46. 4F:
A) Overhead fillet
B) Horizontal fillet
C) Vertical fillet
D) Flat groove
  • 47. 1G:
A) Flat groove
B) Flat fillet
C) Vertical groove
D) Overhead groove
  • 48. 2G:
A) Vertical groove
B) Horizontal groove
C) Horizontal fillet
D) Flat groove
  • 49. 3G:
A) Overhead groove
B) Flat groove
C) Vertical groove
D) Horizontal fillet
  • 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) Root buildup
D) Cleaning motion
  • 52. No large amount of ______ should be in the weld
A) Mercury
B) Oxygen
C) Hydrogen
D) Sulphur
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