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 shielding gas makes sparks
D) The weld bead
  • 2. What is an arc?
A) A type of electrode
B) A joint type that lets light fly around everywhere
C) Light from welding
D) Flow of electricity through a gaseous space or air gap
  • 3. What is arc length?
A) The distance from the gap between plates and the clamp wire
B) The distance from the electrode to the weld pool
C) Length of the rod
D) Length of the weld
  • 4. What is undercut?
A) A surface crack
B) A groove melted into base metal left unfilled
C) A grove melted into the base metal that is a misaligned joint
D) Extra filler metal
  • 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 depression 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 top of the bead
B) Imaginary line through HAZ boundary
C) Imaginary line through weld toe
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) Falling flux 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) Undercut failure
C) Hot cracks trapped in the weld pool at the end
D) Non-metallic material trapped in weld
  • 9. What is a joint?
A) filler metal
B) Location where two or more members are joined
C) The end of the metal piece that is welded first.
D) a welding defect
  • 10. What is a crater crack?
A) A stress fracture formed cause metal was too clean
B) A centerline crack
C) A crack in the crater of a weld bead
D) A cold shut
  • 11. What is ductility
A) Ability to deform without failure
B) Ability to remain cold.
C) Ability to stay magnetized
D) Ability to resist rust
  • 12. What is duty cycle?
A) Electrode burn rate is working nonstop
B) Percentage of time welders operate at rated output
C) Machine lifespan over a 10 min period
D) Arc stability rating
  • 13. What is filler metal?
A) Metal base plate
B) Flux coating
C) Metal added to make a welded joint
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) Arc reach
B) Slag depth
C) Extent weld metal combines with base metal
D) Bead surface depth
  • 16. What is deposition rate?
A) Length welded per hour
B) Weight of metal deposited per unit time
C) Heat generated
D) Amount of slag produced
  • 17. What does SMAW stand for?
A) Shielded Mechanical Arc Welding
B) Shielded Metal Arc Welding
C) Solid Metal Arc Welding
D) Stick Metal Arc Work
  • 18. What is SMAW?
A) Uses shielding gas
B) Uses heat of an arc between covered electrode and the work
C) Purely mechanical process
D) Uses tungsten electrode
  • 19. Advantage of SMAW?
A) High speed
B) Fully automated
C) No slag
D) Portable and inexpensive
  • 20. Disadvantage of SMAW?
A) Only works indoors
B) Requires gas bottles
C) Cannot weld steel
D) It’s slow
  • 21. 7018 can use:
A) AC only
B) Neither
C) AC or DC
D) DC only
  • 22. What polarity do we weld with?
A) Alternating ground
B) No polarity
C) Reverse polarity
D) Straight polarity
  • 23. Reverse polarity:
A) Ground floats
B) Electrode negative
C) No polarity exists
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Proper ventilation and protective clothing
B) Use small rods and low heat
C) Avoid using gloves never safety glasses
D) Always weld outside use sitka gloves
  • 25. SMAW electrode:
A) Consumable electrode covered with flux
B) Carbon rod
C) TIG tungsten
D) MIG wire
  • 26. Strength of 7018 rod:
A) 70k psi
B) 40k psi
C) 18k psi
D) 120k psi
  • 27. Meaning of 3rd digit in 7018:
A) Welding position
B) Positive polarity rod
C) Coating type
D) Rod length
  • 28. Meaning of 4th digit in 7018:
A) Diameter
B) Composition of rod
C) Strength
D) Arc length
  • 29. Four rod groups:
A) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
B) Soft rods, hard rods, hot rods, cold rods
C) Inert, reactive, passive, active
D) High carbon, low carbon, stainless, alloy
  • 30. DCEP:
A) Direct Coil Energy Pulse
B) Direct Current Elevated Pressure
C) Dual Current Electrode Phase
D) Direct Current Electrode Positive
  • 31. Why put rods in oven?
A) Prevent Bending
B) Reduce moisture
C) sterilize
D) heat for penetration
  • 32. Minimum oven temperature?
A) 500°F
B) 175°F
C) 100°F
D) 250°F
  • 33. E stands for:
A) Electrode
B) Edge
C) Energy
D) Earth
  • 34. Rod lengths:
A) 20–30 inches
B) 1–2 feet
C) 3–6 inches
D) 9–18 inches
  • 35. MR or R:
A) Moisture resistant
B) Metal rod
C) Machine ready
D) Medium rated
  • 36. Base metal we use:
A) Aluminum
B) Cast iron
C) Stainless steel
D) A36 mild steel
  • 37. Light produced in welding:
A) X‑ray emissions
B) Blue spectrum only
C) Green infrared
D) Electro violet and ultra red light
  • 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) Arc Welding System
B) American Wire Service
C) Advanced Weld Standards
D) American Welding Society
  • 40. Heat affected zone:
A) Joint line
B) Metal melted completely
C) Metal altered but not melted
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) Controlled Joint Process
C) Complete Joint Penetration
D) Cut Joint Position
  • 43. 1F:
A) Overhead fillet
B) Flat fillet
C) Flat groove
D) Vertical fillet
  • 44. 2F
A) Vertical groove
B) Horizontal fillet
C) Flat Fillet
D) Horizontal groove
  • 45. 3F
A) Overhead fillet
B) Vertical fillet
C) Flat fillet
D) Horizontal groove
  • 46. 4F:
A) Horizontal fillet
B) Flat groove
C) Vertical fillet
D) Overhead fillet
  • 47. 1G:
A) Overhead groove
B) Vertical groove
C) Flat groove
D) Flat fillet
  • 48. 2G:
A) Vertical groove
B) Horizontal groove
C) Flat groove
D) Horizontal fillet
  • 49. 3G:
A) Horizontal fillet
B) Overhead groove
C) Vertical groove
D) Flat groove
  • 50. 4G:
A) Flat groove
B) Horizontal fillet
C) Vertical groove
D) Overhead groove
  • 51. Weave:
A) Root buildup
B) Slag brushing
C) Weld bead made with transverse movement
D) Cleaning motion
  • 52. No large amount of ______ should be in the weld
A) Sulphur
B) Mercury
C) Hydrogen
D) Oxygen
Created with That Quiz — where a math practice test is always one click away.