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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 metal to be welded
C) The weld bead
D) The flux coating
  • 2. What is an arc?
A) A type of electrode
B) A joint type that lets light fly around everywhere
C) Flow of electricity through a gaseous space or air gap
D) Light from welding
  • 3. What is arc length?
A) Length of the rod
B) The distance from the gap between plates and the clamp wire
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 groove melted into base metal left unfilled
C) A surface crack
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 buildup of slag in the face of the weld
C) A melted rod tip in the face of the weld
D) A depression 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) Arc blow expelled that do not form part of the weld
B) Metal particles expelled that do not form part of the weld
C) Gas bubbles expelled that do not form part of the weld
D) Falling flux 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) Non-metallic material trapped in weld
C) Undercut failure
D) Steel trapped in slag
  • 9. What is a joint?
A) Location where two or more members are joined
B) filler metal
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 resist rust
B) Ability to remain cold.
C) Ability to stay magnetized
D) Ability to deform without failure
  • 12. What is duty cycle?
A) Arc stability rating
B) Electrode burn rate is working nonstop
C) Percentage of time welders operate at rated output
D) Machine lifespan over a 10 min period
  • 13. What is filler metal?
A) Metal added to make a welded joint
B) Flux coating
C) Metal base plate
D) Distance fusion extends into base metal
  • 14. What is depth of fusion?
A) Rod penetration
B) Distance bead width extends
C) Weld height
D) Distance fusion extends into base metal
  • 15. What is penetration?
A) Slag depth
B) Arc reach
C) Extent weld metal combines with base metal
D) Bead surface depth
  • 16. What is deposition rate?
A) Length welded per hour
B) Heat generated
C) Weight of metal deposited per unit time
D) Amount of slag produced
  • 17. What does SMAW stand for?
A) Stick Metal Arc Work
B) Shielded Metal Arc Welding
C) Solid Metal Arc Welding
D) Shielded Mechanical Arc Welding
  • 18. What is SMAW?
A) Purely mechanical process
B) Uses heat of an arc between covered electrode and the work
C) Uses shielding gas
D) Uses tungsten electrode
  • 19. Advantage of SMAW?
A) Portable and inexpensive
B) High speed
C) Fully automated
D) No slag
  • 20. Disadvantage of SMAW?
A) It’s slow
B) Cannot weld steel
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) Straight polarity
C) No polarity
D) Alternating ground
  • 23. Reverse polarity:
A) Ground floats
B) Electrode is positive, ground negative
C) Electrode negative
D) No polarity exists
  • 24. Two safety points:
A) Avoid using gloves never safety glasses
B) Always weld outside use sitka gloves
C) Use small rods and low heat
D) Proper ventilation and protective clothing
  • 25. SMAW electrode:
A) MIG wire
B) TIG tungsten
C) Consumable electrode covered with flux
D) Carbon rod
  • 26. Strength of 7018 rod:
A) 120k psi
B) 40k psi
C) 70k psi
D) 18k psi
  • 27. Meaning of 3rd digit in 7018:
A) Rod length
B) Welding position
C) Positive polarity rod
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Arc length
B) Diameter
C) Composition of rod
D) Strength
  • 29. Four rod groups:
A) Soft rods, hard rods, hot rods, cold rods
B) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
C) High carbon, low carbon, stainless, alloy
D) Inert, reactive, passive, active
  • 30. DCEP:
A) Direct Coil Energy Pulse
B) Direct Current Electrode Positive
C) Dual Current Electrode Phase
D) Direct Current Elevated Pressure
  • 31. Why put rods in oven?
A) sterilize
B) Reduce moisture
C) heat for penetration
D) Prevent Bending
  • 32. Minimum oven temperature?
A) 250°F
B) 100°F
C) 175°F
D) 500°F
  • 33. E stands for:
A) Earth
B) Electrode
C) Edge
D) Energy
  • 34. Rod lengths:
A) 20–30 inches
B) 3–6 inches
C) 1–2 feet
D) 9–18 inches
  • 35. MR or R:
A) Metal rod
B) Moisture resistant
C) Machine ready
D) Medium rated
  • 36. Base metal we use:
A) A36 mild steel
B) Cast iron
C) Aluminum
D) Stainless steel
  • 37. Light produced in welding:
A) Electro violet and ultra red light
B) Green infrared
C) Blue spectrum only
D) X‑ray emissions
  • 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) Advanced Weld Standards
B) American Welding Society
C) Arc Welding System
D) American Wire Service
  • 40. Heat affected zone:
A) Metal altered but not melted
B) Slag-covered area
C) Metal melted completely
D) Joint line
  • 41. PJP:
A) Parallel Joint Pass
B) Pressure Joint Process
C) Primary Joint Preparation
D) Partial Joint Penetration
  • 42. CJP:
A) Controlled Joint Process
B) Central Joint Plane
C) Complete Joint Penetration
D) Cut Joint Position
  • 43. 1F:
A) Overhead fillet
B) Flat groove
C) Flat fillet
D) Vertical fillet
  • 44. 2F
A) Horizontal groove
B) Vertical groove
C) Horizontal fillet
D) Flat Fillet
  • 45. 3F
A) Flat fillet
B) Vertical fillet
C) Overhead fillet
D) Horizontal groove
  • 46. 4F:
A) Overhead fillet
B) Vertical fillet
C) Flat groove
D) Horizontal fillet
  • 47. 1G:
A) Vertical groove
B) Flat fillet
C) Flat groove
D) Overhead groove
  • 48. 2G:
A) Horizontal groove
B) Horizontal fillet
C) Flat groove
D) Vertical groove
  • 49. 3G:
A) Flat groove
B) Horizontal fillet
C) Overhead groove
D) Vertical groove
  • 50. 4G:
A) Flat groove
B) Overhead groove
C) Vertical groove
D) Horizontal fillet
  • 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) Mercury
C) Hydrogen
D) Sulphur
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