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 . 56. (014) When you fabricate a flat S-slip, how much material do you add to the end of the duct that fits into the S-slip pocket?
    ½ inch
  • 2 . 54. (013) The recommended joint connection and bracing for a 24-gauge galvanized steel duct, 23-inches wide installed with 35-inch centers is a drive slip and a
    standing S-slip with a cross brake added for strength
  • 3 . Why is it important to make angles as gradual as possible for transitions that contain a heating coil?
    To ensure even air distribution
  • 4 . 52. (212) Which roof location is best for installing a stack or vent?
    Near the upwind edge
  • 5 . 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
  • 6 . 26. (405) Which mechanical property is the ability of metal to stretch, bend, or twist without cracking or breaking?
    Ductility
  • 7 . 86. (616) The water-cooled metallic inert gas welding gun is designed for use on jobs requiring up to
    200 amps or more.
  • 8 . 14. (004) Where is the height of the true-length chart obtained?
    The vertical height of the elevation view
  • 9 . 35. (606) Which butt joint connection is the easiest to make in 1/8- inch to ¼- inch thick metal plate?
    Square groove
  • 10 . 78. (019) During spot welding, what should you do if molten metal is forced out from under the electrode tips?
    Reduce the air pressure