12-11-25 Welding Midterm Review 2025
  • 1. What is the base metal?
A) The flux coating
B) The metal to be welded
C) The weld bead
D) The shielding gas makes sparks
  • 2. What is an arc?
A) A type of electrode
B) Flow of electricity through a gaseous space or air gap
C) A joint type that lets light fly around everywhere
D) Light from welding
  • 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) Extra filler metal
C) A grove melted into the base metal that is a misaligned joint
D) A surface crack
  • 5. What is a crater?
A) A buildup of slag in the face of the weld
B) A porosity pocket 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 HAZ boundary
B) Imaginary line through center of weld metal
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) Metal particles expelled that do not form part of the weld
C) Arc blow expelled that do not form part of the weld
D) Gas bubbles expelled that do not form part of the weld
  • 8. What is slag inclusion?
A) Steel trapped in slag
B) Non-metallic material trapped in weld
C) Hot cracks trapped in the weld pool at the end
D) Undercut failure
  • 9. What is a joint?
A) filler metal
B) a welding defect
C) The end of the metal piece that is welded first.
D) Location where two or more members are joined
  • 10. What is a crater crack?
A) A stress fracture formed cause metal was too clean
B) A crack in the crater of a weld bead
C) A cold shut
D) A centerline crack
  • 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) Machine lifespan over a 10 min period
B) Electrode burn rate is working nonstop
C) Arc stability rating
D) Percentage of time welders operate at rated output
  • 13. What is filler metal?
A) Metal added to make a welded joint
B) Flux coating
C) Distance fusion extends into base metal
D) Metal base plate
  • 14. What is depth of fusion?
A) Weld height
B) Distance fusion extends into base metal
C) Distance bead width extends
D) Rod penetration
  • 15. What is penetration?
A) Arc reach
B) Slag depth
C) Bead surface depth
D) Extent weld metal combines with base metal
  • 16. What is deposition rate?
A) Heat generated
B) Weight of metal deposited per unit time
C) Length welded per hour
D) Amount of slag produced
  • 17. What does SMAW stand for?
A) Shielded Mechanical Arc Welding
B) Stick Metal Arc Work
C) Shielded Metal Arc Welding
D) Solid Metal Arc Welding
  • 18. What is SMAW?
A) Purely mechanical process
B) Uses tungsten electrode
C) Uses heat of an arc between covered electrode and the work
D) Uses shielding gas
  • 19. Advantage of SMAW?
A) Portable and inexpensive
B) High speed
C) Fully automated
D) No slag
  • 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) Neither
B) DC only
C) AC only
D) AC or DC
  • 22. What polarity do we weld with?
A) No polarity
B) Reverse polarity
C) Straight polarity
D) Alternating ground
  • 23. Reverse polarity:
A) Electrode negative
B) Electrode is positive, ground negative
C) No polarity exists
D) Ground floats
  • 24. Two safety points:
A) Always weld outside use sitka gloves
B) Avoid using gloves never safety glasses
C) Proper ventilation and protective clothing
D) Use small rods and low heat
  • 25. SMAW electrode:
A) Carbon rod
B) MIG wire
C) Consumable electrode covered with flux
D) TIG tungsten
  • 26. Strength of 7018 rod:
A) 70k psi
B) 18k psi
C) 40k psi
D) 120k psi
  • 27. Meaning of 3rd digit in 7018:
A) Welding position
B) Rod length
C) Positive polarity rod
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Composition of rod
B) Arc length
C) Diameter
D) Strength
  • 29. Four rod groups:
A) High carbon, low carbon, stainless, alloy
B) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
C) Inert, reactive, passive, active
D) Soft rods, hard rods, hot rods, cold rods
  • 30. DCEP:
A) Direct Current Elevated Pressure
B) Direct Coil Energy Pulse
C) Dual Current Electrode Phase
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) 175°F
C) 100°F
D) 500°F
  • 33. E stands for:
A) Electrode
B) Edge
C) Earth
D) Energy
  • 34. Rod lengths:
A) 3–6 inches
B) 1–2 feet
C) 20–30 inches
D) 9–18 inches
  • 35. MR or R:
A) Moisture resistant
B) Machine ready
C) Metal rod
D) Medium rated
  • 36. Base metal we use:
A) Cast iron
B) Aluminum
C) Stainless steel
D) A36 mild steel
  • 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) Arc, gas, flux, rod, plate
C) Root, face, toe, leg, web
D) Lap, butt, edge, corner, T-joint
  • 39. AWS:
A) American Welding Society
B) American Wire Service
C) Arc Welding System
D) Advanced Weld Standards
  • 40. Heat affected zone:
A) Metal altered but not melted
B) Metal melted completely
C) Slag-covered area
D) Joint line
  • 41. PJP:
A) Parallel Joint Pass
B) Primary Joint Preparation
C) Partial Joint Penetration
D) Pressure Joint Process
  • 42. CJP:
A) Central Joint Plane
B) Complete Joint Penetration
C) Controlled Joint Process
D) Cut Joint Position
  • 43. 1F:
A) Overhead fillet
B) Vertical fillet
C) Flat groove
D) Flat fillet
  • 44. 2F
A) Horizontal fillet
B) Vertical groove
C) Flat Fillet
D) Horizontal groove
  • 45. 3F
A) Overhead fillet
B) Vertical fillet
C) Flat fillet
D) Horizontal groove
  • 46. 4F:
A) Overhead fillet
B) Horizontal fillet
C) Vertical fillet
D) Flat groove
  • 47. 1G:
A) Flat fillet
B) Vertical groove
C) Overhead groove
D) Flat groove
  • 48. 2G:
A) Vertical groove
B) Horizontal fillet
C) Flat groove
D) Horizontal groove
  • 49. 3G:
A) Vertical groove
B) Overhead groove
C) Flat groove
D) Horizontal fillet
  • 50. 4G:
A) Vertical groove
B) Overhead groove
C) Horizontal fillet
D) Flat groove
  • 51. Weave:
A) Weld bead made with transverse movement
B) Cleaning motion
C) Slag brushing
D) Root buildup
  • 52. No large amount of ______ should be in the weld
A) Hydrogen
B) Oxygen
C) Mercury
D) Sulphur
Dibuat dengan That Quiz — di mana latihan tes matematika selalu tersedia hanya dengan satu klik.