12-11-25 Welding Midterm Review 2025
  • 1. What is the base metal?
A) The metal to be welded
B) The flux coating
C) The shielding gas makes sparks
D) The weld bead
  • 2. What is an arc?
A) Flow of electricity through a gaseous space or air gap
B) Light from welding
C) A joint type that lets light fly around everywhere
D) A type of electrode
  • 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 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 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 top of the bead
B) Imaginary line through weld toe
C) Imaginary line through center of weld metal
D) Imaginary line through HAZ boundary
  • 7. What is spatter?
A) Falling flux expelled that do not form part of the weld
B) Arc blow 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) Steel trapped in slag
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) filler metal
C) a welding defect
D) Location where two or more members are joined
  • 10. What is a crater crack?
A) A crack in the crater of a weld bead
B) A cold shut
C) A centerline crack
D) A stress fracture formed cause metal was too clean
  • 11. What is ductility
A) Ability to resist rust
B) Ability to remain cold.
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) Arc stability rating
C) Machine lifespan over a 10 min period
D) Electrode burn rate is working nonstop
  • 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) Weld height
B) Distance fusion extends into base metal
C) Rod penetration
D) Distance bead width extends
  • 15. What is penetration?
A) Extent weld metal combines with base metal
B) Bead surface depth
C) Arc reach
D) Slag depth
  • 16. What is deposition rate?
A) Weight of metal deposited per unit time
B) Length welded per hour
C) Amount of slag produced
D) Heat generated
  • 17. What does SMAW stand for?
A) Solid Metal Arc Welding
B) Shielded Metal Arc Welding
C) Shielded Mechanical Arc Welding
D) Stick Metal Arc Work
  • 18. What is SMAW?
A) Uses shielding gas
B) Purely mechanical process
C) Uses tungsten electrode
D) Uses heat of an arc between covered electrode and the work
  • 19. Advantage of SMAW?
A) No slag
B) Fully automated
C) High speed
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) Neither
B) AC only
C) AC or DC
D) DC only
  • 22. What polarity do we weld with?
A) No polarity
B) Straight polarity
C) Reverse polarity
D) Alternating ground
  • 23. Reverse polarity:
A) No polarity exists
B) Ground floats
C) Electrode negative
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Proper ventilation and protective clothing
B) Avoid using gloves never safety glasses
C) Use small rods and low heat
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) 120k psi
B) 40k psi
C) 70k psi
D) 18k 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) Diameter
B) Composition of rod
C) Arc length
D) Strength
  • 29. Four rod groups:
A) Soft rods, hard rods, hot rods, cold rods
B) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
C) Inert, reactive, passive, active
D) High carbon, low carbon, stainless, alloy
  • 30. DCEP:
A) Dual Current Electrode Phase
B) Direct Current Electrode Positive
C) Direct Current Elevated Pressure
D) Direct Coil Energy Pulse
  • 31. Why put rods in oven?
A) heat for penetration
B) Reduce moisture
C) Prevent Bending
D) sterilize
  • 32. Minimum oven temperature?
A) 500°F
B) 250°F
C) 100°F
D) 175°F
  • 33. E stands for:
A) Edge
B) Energy
C) Earth
D) Electrode
  • 34. Rod lengths:
A) 20–30 inches
B) 3–6 inches
C) 9–18 inches
D) 1–2 feet
  • 35. MR or R:
A) Machine ready
B) Moisture resistant
C) Medium rated
D) Metal rod
  • 36. Base metal we use:
A) A36 mild steel
B) Stainless steel
C) Aluminum
D) Cast iron
  • 37. Light produced in welding:
A) Electro violet and ultra red light
B) Green infrared
C) X‑ray emissions
D) Blue spectrum only
  • 38. Five joint types:
A) Arc, gas, flux, rod, plate
B) Curve, twist, bend, fold, lock
C) Root, face, toe, leg, web
D) Lap, butt, edge, corner, T-joint
  • 39. AWS:
A) American Welding Society
B) American Wire Service
C) Advanced Weld Standards
D) Arc Welding System
  • 40. Heat affected zone:
A) Joint line
B) Metal altered but not melted
C) Metal melted completely
D) Slag-covered area
  • 41. PJP:
A) Partial Joint Penetration
B) Parallel Joint Pass
C) Primary Joint Preparation
D) Pressure Joint Process
  • 42. CJP:
A) Central Joint Plane
B) Cut Joint Position
C) Complete Joint Penetration
D) Controlled Joint Process
  • 43. 1F:
A) Vertical fillet
B) Flat groove
C) Flat fillet
D) Overhead fillet
  • 44. 2F
A) Vertical groove
B) Flat Fillet
C) Horizontal fillet
D) Horizontal groove
  • 45. 3F
A) Horizontal groove
B) Flat fillet
C) Vertical fillet
D) Overhead fillet
  • 46. 4F:
A) Horizontal fillet
B) Overhead fillet
C) Flat groove
D) Vertical fillet
  • 47. 1G:
A) Flat fillet
B) Vertical groove
C) Flat groove
D) Overhead groove
  • 48. 2G:
A) Flat groove
B) Horizontal fillet
C) Horizontal groove
D) Vertical groove
  • 49. 3G:
A) Overhead groove
B) Vertical groove
C) Flat groove
D) Horizontal fillet
  • 50. 4G:
A) Overhead groove
B) Vertical groove
C) Horizontal fillet
D) Flat groove
  • 51. Weave:
A) Weld bead made with transverse movement
B) Root buildup
C) Slag brushing
D) Cleaning motion
  • 52. No large amount of ______ should be in the weld
A) Oxygen
B) Sulphur
C) Hydrogen
D) Mercury
Prova creada amb That Quiz — on la pràctica de les matemàtiques és fàcil.