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