3E351P Practice Test

Listed below are sample questions for 3E351P from our database. Register now to start taking tests for this AFSC! We have 329 questions currently in the database for this category.

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  • 1 . 20. (603) E–6010 and E–6011 are which kind of electrodes?
    Fast-freeze
  • 2 . Dampers are used in duct systems to
    vary the volume of airflow
  • 3 . 65. (612) If the molten pool becomes cloudy or the tungsten electrode turns blue when cooling, this indicates
    a leak in the hose or hose connection
  • 4 . 93. (618) What metal transfer method is best for welding thick aluminum in the flat position?
    Spray arc
  • 5 . 46. (410) Which joint is formed when one plate edge is welded perpendicular to the surface of another?
    Tee
  • 6 . 92. (618) When you do metallic inert gas welding, which bead welding technique gives the best penetration?
    Backhand
  • 7 . 40. (209) Foil-backed insulation used on ducts must cover the entire duct surface to
    prevent condensation.
  • 8 . Which technique allows you to achieve an air distribution system with smooth airflow?
    Make rectangular ducts as nearly square as possible.
  • 9 . You can determine the heel radius for a round elbow by
    adding the throat radius to the elbow diameter
  • 10 . 10. (202) After you adjust a butterfly damper, you lock the handle and damper blade in place with a
    wingnut