12-11-25 Welding Midterm Review 2025
  • 1. What is the base metal?
A) The flux coating
B) The shielding gas makes sparks
C) The weld bead
D) The metal to be welded
  • 2. What is an arc?
A) Light from welding
B) A joint type that lets light fly around everywhere
C) A type of electrode
D) Flow of electricity through a gaseous space or air gap
  • 3. What is arc length?
A) Length of the rod
B) The distance from the electrode to the weld pool
C) The distance from the gap between plates and the clamp wire
D) Length of the weld
  • 4. What is undercut?
A) A surface crack
B) Extra filler metal
C) A grove melted into the base metal that is a misaligned joint
D) A groove melted into base metal left unfilled
  • 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 porosity pocket in the face of the weld
D) A melted rod tip in the face of the weld
  • 6. What is the axis of weld?
A) Imaginary line through center of weld metal
B) Imaginary line through HAZ boundary
C) Imaginary line through top of the bead
D) Imaginary line through weld toe
  • 7. What is spatter?
A) Falling flux expelled that do not form part of the weld
B) Gas bubbles 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) Undercut failure
C) Non-metallic material trapped in weld
D) Hot cracks trapped in the weld pool at the end
  • 9. What is a joint?
A) a welding defect
B) The end of the metal piece that is welded first.
C) filler metal
D) Location where two or more members are joined
  • 10. What is a crater crack?
A) A cold shut
B) A centerline crack
C) A stress fracture formed cause metal was too clean
D) A crack in the crater of a weld bead
  • 11. What is ductility
A) Ability to remain cold.
B) Ability to resist rust
C) Ability to stay magnetized
D) Ability to deform without failure
  • 12. What is duty cycle?
A) Percentage of time welders operate at rated output
B) Arc stability rating
C) Electrode burn rate is working nonstop
D) Machine lifespan over a 10 min period
  • 13. What is filler metal?
A) Flux coating
B) Distance fusion extends into base metal
C) Metal base plate
D) Metal added to make a welded joint
  • 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) Arc reach
B) Bead surface depth
C) Slag depth
D) Extent weld metal combines with base metal
  • 16. What is deposition rate?
A) Weight of metal deposited per unit time
B) Heat generated
C) Amount of slag produced
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 tungsten electrode
B) Uses shielding gas
C) Purely mechanical process
D) Uses heat of an arc between covered electrode and the work
  • 19. Advantage of SMAW?
A) Fully automated
B) High speed
C) No slag
D) Portable and inexpensive
  • 20. Disadvantage of SMAW?
A) Only works indoors
B) Cannot weld steel
C) It’s slow
D) Requires gas bottles
  • 21. 7018 can use:
A) AC or DC
B) AC only
C) DC only
D) Neither
  • 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) No polarity exists
C) Electrode negative
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Always weld outside use sitka gloves
B) Proper ventilation and protective clothing
C) Use small rods and low heat
D) Avoid using gloves never safety glasses
  • 25. SMAW electrode:
A) Consumable electrode covered with flux
B) MIG wire
C) TIG tungsten
D) Carbon rod
  • 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) Positive polarity rod
C) Rod length
D) Welding position
  • 28. Meaning of 4th digit in 7018:
A) Strength
B) Diameter
C) Arc length
D) Composition of rod
  • 29. Four rod groups:
A) Inert, reactive, passive, active
B) Soft rods, hard rods, hot rods, cold rods
C) High carbon, low carbon, stainless, alloy
D) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
  • 30. DCEP:
A) Direct Current Electrode Positive
B) Direct Current Elevated Pressure
C) Direct Coil Energy Pulse
D) Dual Current Electrode Phase
  • 31. Why put rods in oven?
A) Reduce moisture
B) Prevent Bending
C) sterilize
D) heat for penetration
  • 32. Minimum oven temperature?
A) 500°F
B) 250°F
C) 100°F
D) 175°F
  • 33. E stands for:
A) Electrode
B) Edge
C) Earth
D) Energy
  • 34. Rod lengths:
A) 9–18 inches
B) 20–30 inches
C) 1–2 feet
D) 3–6 inches
  • 35. MR or R:
A) Medium rated
B) Machine ready
C) Moisture resistant
D) Metal rod
  • 36. Base metal we use:
A) Aluminum
B) A36 mild steel
C) Stainless steel
D) Cast iron
  • 37. Light produced in welding:
A) X‑ray emissions
B) Electro violet and ultra red light
C) Green infrared
D) Blue spectrum only
  • 38. Five joint types:
A) Curve, twist, bend, fold, lock
B) Lap, butt, edge, corner, T-joint
C) Arc, gas, flux, rod, plate
D) Root, face, toe, leg, web
  • 39. AWS:
A) American Wire Service
B) American Welding Society
C) Advanced Weld Standards
D) Arc Welding System
  • 40. Heat affected zone:
A) Metal melted completely
B) Joint line
C) Metal altered but not melted
D) Slag-covered area
  • 41. PJP:
A) Partial Joint Penetration
B) Pressure Joint Process
C) Parallel Joint Pass
D) Primary Joint Preparation
  • 42. CJP:
A) Complete Joint Penetration
B) Controlled Joint Process
C) Cut Joint Position
D) Central Joint Plane
  • 43. 1F:
A) Overhead fillet
B) Flat groove
C) Vertical fillet
D) Flat fillet
  • 44. 2F
A) Horizontal fillet
B) Vertical groove
C) Horizontal groove
D) Flat Fillet
  • 45. 3F
A) Overhead fillet
B) Flat fillet
C) Horizontal groove
D) Vertical fillet
  • 46. 4F:
A) Flat groove
B) Overhead fillet
C) Horizontal fillet
D) Vertical fillet
  • 47. 1G:
A) Flat fillet
B) Overhead groove
C) Flat groove
D) Vertical groove
  • 48. 2G:
A) Vertical groove
B) Horizontal groove
C) Horizontal fillet
D) Flat groove
  • 49. 3G:
A) Horizontal fillet
B) Overhead groove
C) Flat groove
D) Vertical groove
  • 50. 4G:
A) Horizontal fillet
B) Vertical groove
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) Mercury
B) Oxygen
C) Hydrogen
D) Sulphur
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