12-11-25 Welding Midterm Review 2025
  • 1. What is the base metal?
A) The flux coating
B) The weld bead
C) The shielding gas makes sparks
D) The metal to be welded
  • 2. What is an arc?
A) A type of electrode
B) Light from welding
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) Length of the weld
B) Length of the rod
C) The distance from the electrode to the weld pool
D) The distance from the gap between plates and the clamp wire
  • 4. What is undercut?
A) A groove melted into base metal left unfilled
B) A grove melted into the base metal that is a misaligned joint
C) A surface crack
D) Extra filler metal
  • 5. What is a crater?
A) A melted rod tip in the face of the weld
B) A porosity pocket in the face of the weld
C) A depression in the face of the weld
D) A buildup of slag 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) Steel trapped in slag
B) Hot cracks trapped in the weld pool at the end
C) Non-metallic material trapped in weld
D) Undercut failure
  • 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) filler metal
D) a welding defect
  • 10. What is a crater crack?
A) A centerline crack
B) A crack in the crater of a weld bead
C) A stress fracture formed cause metal was too clean
D) A cold shut
  • 11. What is ductility
A) Ability to stay magnetized
B) Ability to resist rust
C) Ability to remain cold.
D) Ability to deform without failure
  • 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 added to make a welded joint
C) Metal base plate
D) Distance fusion extends into base metal
  • 14. What is depth of fusion?
A) Distance bead width extends
B) Distance fusion extends into base metal
C) Rod penetration
D) Weld height
  • 15. What is penetration?
A) Arc reach
B) Extent weld metal combines with base metal
C) Bead surface depth
D) Slag depth
  • 16. What is deposition rate?
A) Length welded per hour
B) Weight of metal deposited per unit time
C) Amount of slag produced
D) Heat generated
  • 17. What does SMAW stand for?
A) Stick Metal Arc Work
B) Shielded Metal Arc Welding
C) Shielded Mechanical Arc Welding
D) Solid Metal Arc Welding
  • 18. What is SMAW?
A) Uses heat of an arc between covered electrode and the work
B) Uses shielding gas
C) Uses tungsten electrode
D) Purely mechanical process
  • 19. Advantage of SMAW?
A) No slag
B) High speed
C) Fully automated
D) Portable and inexpensive
  • 20. Disadvantage of SMAW?
A) Requires gas bottles
B) Only works indoors
C) Cannot weld steel
D) It’s slow
  • 21. 7018 can use:
A) AC or DC
B) DC only
C) Neither
D) AC only
  • 22. What polarity do we weld with?
A) Reverse polarity
B) Alternating ground
C) No polarity
D) Straight polarity
  • 23. Reverse polarity:
A) Electrode negative
B) Ground floats
C) No polarity exists
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Use small rods and low heat
B) Proper ventilation and protective clothing
C) Avoid using gloves never safety glasses
D) Always weld outside use sitka gloves
  • 25. SMAW electrode:
A) MIG wire
B) Carbon rod
C) Consumable electrode covered with flux
D) TIG tungsten
  • 26. Strength of 7018 rod:
A) 40k psi
B) 120k psi
C) 70k psi
D) 18k psi
  • 27. Meaning of 3rd digit in 7018:
A) Rod length
B) Coating type
C) Positive polarity rod
D) Welding position
  • 28. Meaning of 4th digit in 7018:
A) Arc length
B) Composition of rod
C) Diameter
D) Strength
  • 29. Four rod groups:
A) Soft rods, hard rods, hot rods, cold rods
B) High carbon, low carbon, stainless, alloy
C) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
D) Inert, reactive, passive, active
  • 30. DCEP:
A) Direct Current Elevated Pressure
B) Direct Coil Energy Pulse
C) Direct Current Electrode Positive
D) Dual Current Electrode Phase
  • 31. Why put rods in oven?
A) Prevent Bending
B) Reduce moisture
C) heat for penetration
D) sterilize
  • 32. Minimum oven temperature?
A) 100°F
B) 500°F
C) 175°F
D) 250°F
  • 33. E stands for:
A) Earth
B) Electrode
C) Energy
D) Edge
  • 34. Rod lengths:
A) 9–18 inches
B) 3–6 inches
C) 1–2 feet
D) 20–30 inches
  • 35. MR or R:
A) Medium rated
B) Metal rod
C) Moisture resistant
D) Machine ready
  • 36. Base metal we use:
A) Aluminum
B) Stainless steel
C) A36 mild steel
D) Cast iron
  • 37. Light produced in welding:
A) Electro violet and ultra red light
B) Blue spectrum only
C) X‑ray emissions
D) Green infrared
  • 38. Five joint types:
A) Lap, butt, edge, corner, T-joint
B) Curve, twist, bend, fold, lock
C) Root, face, toe, leg, web
D) Arc, gas, flux, rod, plate
  • 39. AWS:
A) American Welding Society
B) Advanced Weld Standards
C) American Wire Service
D) Arc Welding System
  • 40. Heat affected zone:
A) Metal melted completely
B) Metal altered but not melted
C) Joint line
D) Slag-covered area
  • 41. PJP:
A) Pressure Joint Process
B) Parallel Joint Pass
C) Primary Joint Preparation
D) Partial Joint Penetration
  • 42. CJP:
A) Central Joint Plane
B) Complete Joint Penetration
C) Cut Joint Position
D) Controlled Joint Process
  • 43. 1F:
A) Overhead fillet
B) Flat groove
C) Flat fillet
D) Vertical fillet
  • 44. 2F
A) Horizontal fillet
B) Vertical groove
C) Flat Fillet
D) Horizontal groove
  • 45. 3F
A) Horizontal groove
B) Overhead fillet
C) Vertical fillet
D) Flat fillet
  • 46. 4F:
A) Flat groove
B) Overhead fillet
C) Vertical fillet
D) Horizontal fillet
  • 47. 1G:
A) Vertical groove
B) Overhead groove
C) Flat groove
D) Flat fillet
  • 48. 2G:
A) Horizontal fillet
B) Vertical groove
C) Flat groove
D) Horizontal groove
  • 49. 3G:
A) Flat groove
B) Vertical groove
C) Horizontal fillet
D) Overhead groove
  • 50. 4G:
A) Vertical groove
B) Horizontal fillet
C) Flat groove
D) Overhead groove
  • 51. Weave:
A) Slag brushing
B) Root buildup
C) Cleaning motion
D) Weld bead made with transverse movement
  • 52. No large amount of ______ should be in the weld
A) Hydrogen
B) Mercury
C) Sulphur
D) Oxygen
Létrehozva That Quiz — ahol a matematikai gyakorlás mindig egy kattintásnyira van.