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

تم إنشاؤها باستخدام That Quiz — حيث يكون اختبار ممارسة الرياضيات دائمًا على بُعد نقرة واحدة.