12-11-25 Welding Midterm Review 2025
  • 1. What is the base metal?
A) The flux coating
B) The weld bead
C) The shielding gas makes sparks
D) The metal to be welded
  • 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 rod
C) Length of the weld
D) The distance from the electrode to the weld pool
  • 4. What is undercut?
A) A grove melted into the base metal that is a misaligned joint
B) A surface crack
C) A groove melted into base metal left unfilled
D) Extra filler metal
  • 5. What is a crater?
A) A porosity pocket in the face of the weld
B) A depression 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 center of weld metal
C) Imaginary line through HAZ boundary
D) Imaginary line through weld toe
  • 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) 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) The end of the metal piece that is welded first.
C) a welding defect
D) Location where two or more members are joined
  • 10. What is a crater crack?
A) A centerline crack
B) A stress fracture formed cause metal was too clean
C) A cold shut
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 resist rust
D) Ability to deform without failure
  • 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) Flux coating
B) Metal base plate
C) Distance fusion extends into base metal
D) Metal added to make a welded joint
  • 14. What is depth of fusion?
A) Distance fusion extends into base metal
B) Rod penetration
C) Weld height
D) Distance bead width extends
  • 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) Length welded per hour
B) Amount of slag produced
C) Weight of metal deposited per unit time
D) Heat generated
  • 17. What does SMAW stand for?
A) Solid Metal Arc Welding
B) Shielded Mechanical Arc Welding
C) Shielded Metal Arc Welding
D) Stick Metal Arc Work
  • 18. What is SMAW?
A) Uses shielding gas
B) Uses tungsten electrode
C) Uses heat of an arc between covered electrode and the work
D) Purely mechanical process
  • 19. Advantage of SMAW?
A) No slag
B) High speed
C) Portable and inexpensive
D) Fully automated
  • 20. Disadvantage of SMAW?
A) Requires gas bottles
B) Only works indoors
C) Cannot weld steel
D) It’s slow
  • 21. 7018 can use:
A) AC only
B) Neither
C) DC 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) Ground floats
B) Electrode is positive, ground negative
C) Electrode negative
D) No polarity exists
  • 24. Two safety points:
A) Always weld outside use sitka gloves
B) Proper ventilation and protective clothing
C) Avoid using gloves never safety glasses
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) 18k psi
B) 70k psi
C) 120k psi
D) 40k psi
  • 27. Meaning of 3rd digit in 7018:
A) Coating type
B) Welding position
C) Rod length
D) Positive polarity rod
  • 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) Inert, reactive, passive, active
C) Soft rods, hard rods, hot rods, cold rods
D) Celluosic, Rutile, Basic/low Hydrogen, Iron Powder
  • 30. DCEP:
A) Dual Current Electrode Phase
B) Direct Current Elevated Pressure
C) Direct Current Electrode Positive
D) Direct Coil Energy Pulse
  • 31. Why put rods in oven?
A) sterilize
B) heat for penetration
C) Reduce moisture
D) Prevent Bending
  • 32. Minimum oven temperature?
A) 175°F
B) 100°F
C) 250°F
D) 500°F
  • 33. E stands for:
A) Electrode
B) Earth
C) Edge
D) Energy
  • 34. Rod lengths:
A) 20–30 inches
B) 1–2 feet
C) 9–18 inches
D) 3–6 inches
  • 35. MR or R:
A) Machine ready
B) Metal rod
C) Moisture resistant
D) Medium rated
  • 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) Green infrared
C) X‑ray emissions
D) Electro violet and ultra red light
  • 38. Five joint types:
A) Curve, twist, bend, fold, lock
B) Lap, butt, edge, corner, T-joint
C) Root, face, toe, leg, web
D) Arc, gas, flux, rod, plate
  • 39. AWS:
A) Advanced Weld Standards
B) American Wire Service
C) American Welding Society
D) Arc Welding System
  • 40. Heat affected zone:
A) Metal melted completely
B) Slag-covered area
C) Joint line
D) Metal altered but not melted
  • 41. PJP:
A) Partial Joint Penetration
B) Primary Joint Preparation
C) Pressure Joint Process
D) Parallel Joint Pass
  • 42. CJP:
A) Central Joint Plane
B) Complete Joint Penetration
C) Controlled Joint Process
D) Cut Joint Position
  • 43. 1F:
A) Vertical fillet
B) Flat fillet
C) Flat groove
D) Overhead fillet
  • 44. 2F
A) Horizontal groove
B) Flat Fillet
C) Horizontal fillet
D) Vertical groove
  • 45. 3F
A) Horizontal groove
B) Vertical fillet
C) Flat fillet
D) Overhead fillet
  • 46. 4F:
A) Vertical fillet
B) Overhead fillet
C) Horizontal fillet
D) Flat groove
  • 47. 1G:
A) Overhead groove
B) Flat fillet
C) Flat groove
D) Vertical groove
  • 48. 2G:
A) Horizontal groove
B) Vertical groove
C) Flat groove
D) Horizontal fillet
  • 49. 3G:
A) Flat groove
B) Horizontal fillet
C) Overhead groove
D) Vertical groove
  • 50. 4G:
A) Overhead groove
B) Flat groove
C) Vertical groove
D) Horizontal fillet
  • 51. Weave:
A) Root buildup
B) Weld bead made with transverse movement
C) Slag brushing
D) Cleaning motion
  • 52. No large amount of ______ should be in the weld
A) Sulphur
B) Mercury
C) Oxygen
D) Hydrogen
تم إنشاؤها باستخدام That Quiz — حيث يكون اختبار ممارسة الرياضيات دائمًا على بُعد نقرة واحدة.