12-11-25 Welding Midterm Review 2025
  • 1. What is the base metal?
A) The shielding gas makes sparks
B) The metal to be welded
C) The flux coating
D) The weld bead
  • 2. What is an arc?
A) Light from welding
B) A type of electrode
C) A joint type that lets light fly around everywhere
D) Flow of electricity through a gaseous space or air gap
  • 3. What is arc length?
A) Length of the rod
B) The distance from the gap between plates and the clamp wire
C) The distance from the electrode to the weld pool
D) Length of the weld
  • 4. What is undercut?
A) Extra filler metal
B) A grove melted into the base metal that is a misaligned joint
C) A surface crack
D) A groove melted into base metal left unfilled
  • 5. What is a crater?
A) A depression in the face of the weld
B) A melted rod tip in the face of the weld
C) A buildup of slag in the face of the weld
D) A porosity pocket 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) Arc blow expelled that do not form part of the weld
B) Falling flux expelled that do not form part of the weld
C) Metal particles 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) Non-metallic material trapped in weld
B) Undercut failure
C) Steel trapped in slag
D) Hot cracks trapped in the weld pool at the end
  • 9. What is a joint?
A) Location where two or more members are joined
B) The end of the metal piece that is welded first.
C) filler metal
D) a welding defect
  • 10. What is a crater crack?
A) A cold shut
B) A centerline crack
C) A stress fracture formed cause metal was too clean
D) A crack in the crater of a weld bead
  • 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) Electrode burn rate is working nonstop
B) Machine lifespan over a 10 min period
C) Arc stability rating
D) Percentage of time welders operate at rated output
  • 13. What is filler metal?
A) Flux coating
B) Metal base plate
C) Metal added to make a welded joint
D) Distance fusion extends into base metal
  • 14. What is depth of fusion?
A) Distance bead width extends
B) Rod penetration
C) Distance fusion extends into base metal
D) Weld height
  • 15. What is penetration?
A) Arc reach
B) Extent weld metal combines with base metal
C) Slag depth
D) Bead surface depth
  • 16. What is deposition rate?
A) Heat generated
B) Length welded per hour
C) Amount of slag produced
D) Weight of metal deposited per unit time
  • 17. What does SMAW stand for?
A) Solid Metal Arc Welding
B) Stick Metal Arc Work
C) Shielded Mechanical Arc Welding
D) Shielded Metal Arc Welding
  • 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) Fully automated
B) High speed
C) Portable and inexpensive
D) No slag
  • 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) Neither
B) AC or DC
C) DC only
D) AC only
  • 22. What polarity do we weld with?
A) Reverse polarity
B) No polarity
C) Straight polarity
D) Alternating ground
  • 23. Reverse polarity:
A) No polarity exists
B) Electrode negative
C) Ground floats
D) Electrode is positive, ground negative
  • 24. Two safety points:
A) Use small rods and low heat
B) Proper ventilation and protective clothing
C) Always weld outside use sitka gloves
D) Avoid using gloves never safety glasses
  • 25. SMAW electrode:
A) TIG tungsten
B) Consumable electrode covered with flux
C) Carbon rod
D) MIG wire
  • 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) Positive polarity rod
C) Rod length
D) Coating type
  • 28. Meaning of 4th digit in 7018:
A) Strength
B) Composition of rod
C) Arc length
D) Diameter
  • 29. Four rod groups:
A) High carbon, low carbon, stainless, alloy
B) Soft rods, hard rods, hot rods, cold rods
C) Inert, reactive, passive, active
D) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
  • 30. DCEP:
A) Direct Coil Energy Pulse
B) Dual Current Electrode Phase
C) Direct Current Electrode Positive
D) Direct Current Elevated Pressure
  • 31. Why put rods in oven?
A) heat for penetration
B) sterilize
C) Prevent Bending
D) Reduce moisture
  • 32. Minimum oven temperature?
A) 100°F
B) 250°F
C) 175°F
D) 500°F
  • 33. E stands for:
A) Energy
B) Earth
C) Edge
D) Electrode
  • 34. Rod lengths:
A) 20–30 inches
B) 3–6 inches
C) 1–2 feet
D) 9–18 inches
  • 35. MR or R:
A) Moisture resistant
B) Medium rated
C) Metal rod
D) Machine ready
  • 36. Base metal we use:
A) A36 mild steel
B) Stainless steel
C) Aluminum
D) Cast iron
  • 37. Light produced in welding:
A) Blue spectrum only
B) X‑ray emissions
C) Green infrared
D) Electro violet and ultra red light
  • 38. Five joint types:
A) Root, face, toe, leg, web
B) Lap, butt, edge, corner, T-joint
C) Curve, twist, bend, fold, lock
D) Arc, gas, flux, rod, plate
  • 39. AWS:
A) Advanced Weld Standards
B) Arc Welding System
C) American Welding Society
D) American Wire Service
  • 40. Heat affected zone:
A) Joint line
B) Metal melted completely
C) Metal altered but not melted
D) Slag-covered area
  • 41. PJP:
A) Primary Joint Preparation
B) Partial Joint Penetration
C) Parallel Joint Pass
D) Pressure Joint Process
  • 42. CJP:
A) Central Joint Plane
B) Complete Joint Penetration
C) Cut Joint Position
D) Controlled Joint Process
  • 43. 1F:
A) Flat fillet
B) Vertical fillet
C) Flat groove
D) Overhead fillet
  • 44. 2F
A) Vertical groove
B) Horizontal fillet
C) Flat Fillet
D) Horizontal groove
  • 45. 3F
A) Vertical fillet
B) Horizontal groove
C) Flat fillet
D) Overhead fillet
  • 46. 4F:
A) Overhead fillet
B) Flat groove
C) Horizontal fillet
D) Vertical fillet
  • 47. 1G:
A) Overhead groove
B) Vertical groove
C) Flat fillet
D) Flat groove
  • 48. 2G:
A) Flat groove
B) Horizontal fillet
C) Horizontal groove
D) Vertical groove
  • 49. 3G:
A) Vertical groove
B) Overhead groove
C) Flat groove
D) Horizontal fillet
  • 50. 4G:
A) Vertical groove
B) Overhead groove
C) Flat groove
D) Horizontal fillet
  • 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) Sulphur
C) Oxygen
D) Mercury
Criado com That Quiz — onde a realização de um teste de matemática está a um clique de distância.