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

Azterketa honekin sortua That Quiz — matematikaren praktika erraza egiten den tokia.