3e451 Volume 3 Plumbing Systems

124 Questions | Total Attempts: 462

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3e451 Quizzes & Trivia

Questions and Answers
  • 1. 
    (401) What wall thicknesses are available in copper tubing for drinking water?
    • A. 

      A, B, C, D

    • B. 

      N, O, P, DWV

    • C. 

      K, L, M, DWV

    • D. 

      Schedule 40 and 80

  • 2. 
    (401) Galvanization provides a pipe with what benefit?
    • A. 

      Makes the pipe easier to bend

    • B. 

      Increases pipe thickness

    • C. 

      Increases pipe strength

    • D. 

      Reduces corrosion

  • 3. 
    (402) What fitting joins pipes so they can be taken apart later?
    • A. 

      Union

    • B. 

      Nipple

    • C. 

      Adapter

    • D. 

      Coupling

  • 4. 
    (402) How do street elbows and standard elbows differ?
    • A. 

      Standard elbows have male threads

    • B. 

      Street elbows have recessed threads

    • C. 

      Standard elbows have tapered threads

    • D. 

      Street elbows have one female and one male end

  • 5. 
    (402) hows do copper pressure fittings differ from copper drain, waste, and vent (DWV) fittings?
    • A. 

      DWV fittings are threaded

    • B. 

      Pressure fittings are threaded

    • C. 

      DWV fittings have a short radius sweep

    • D. 

      Pressure fittings have a deeper solder pocket

  • 6. 
    (403) What is the smallest increment on most of the tape measures in our trade?
    • A. 

      Sixty-fourth inch

    • B. 

      Thirty-second inch

    • C. 

      Sixteenth inch

    • D. 

      Eighth inch

  • 7. 
    (403) What is the next largest sixteenth-inch mark after 3/4?
    • A. 

      15/16ths

    • B. 

      13/16ths

    • C. 

      10/16ths

    • D. 

      9/16ths

  • 8. 
    (404) Convert 7 feet to inches.
    • A. 

      60 inches

    • B. 

      72 inches

    • C. 

      84 inches

    • D. 

      96 inches

  • 9. 
    (405) What kind of tape measurer can you use to determine the travel when the offset angle is known to be 45 degrees?
    • A. 

      Angle rule

    • B. 

      Travel rule

    • C. 

      Standard rule

    • D. 

      Plumber's rule

  • 10. 
    (406) How do you determine the center of a fitting?
    • A. 

      By reading the branch, then the run

    • B. 

      By determining the angle of the branch

    • C. 

      By dividing the length of the fitting by 2

    • D. 

      By finding where lines drawn through the fitting intersect

  • 11. 
    (406) An end-to-center measurement is made from the?
    • A. 

      Middle of the pipe to end of fitting

    • B. 

      End of pipe to center of fitting

    • C. 

      Center of pipe to end of fitting

    • D. 

      End of face to center of back

  • 12. 
    (407) When cutting tubing with a tubing cutter, how far do you turn the handle after each revolution?
    • A. 

      1/8 turn

    • B. 

      1/4 turn

    • C. 

      1/2 turn

    • D. 

      1 full turn

  • 13. 
    (407) To remove the burr from inside a piece of pipe, operate the handle of the reamer with?
    • A. 

      Short, even, counterclockwise strokes

    • B. 

      Long, even, counterclockwise strokes

    • C. 

      Long, even, clockwise strokes

    • D. 

      Short, even, clockwise strokes

  • 14. 
    (408) What diameter steel pipe sizes are you able to thread with a nonadjustable ratchet style hand threader
    • A. 

      1/8 - 2 inches

    • B. 

      1/8 - 4 inches

    • C. 

      1/2 - 2 1/2 inches

    • D. 

      1/2 - 3 inches

  • 15. 
    (408) When threading steel pipe with a hand threader, how often do you apply oil to the pipe dies?
    • A. 

      When the dies squeak

    • B. 

      Before and after cutting threads

    • C. 

      Every two or three downward stokes of the die handle

    • D. 

      Once, at the halfway point of the threading operation

  • 16. 
    (408) What is the purpose of oiling while threading the steel pipe?
    • A. 

      Allows the pipe dies to turn freely inside the die holder

    • B. 

      Prevents the dies and threads from overheating and becoming damaged

    • C. 

      The oil penetrates the pipe walls, slows down the corrosion process, and allows increased pipe life

    • D. 

      The oil maintains a thin protective coating on the pipe and prevents flying debris from injuring the user

  • 17. 
    (409) When threading a fitting on a pipe, what happens if you overtighten a fitting?
    • A. 

      Leaks will be stopped completely

    • B. 

      The wrench you are using might break

    • C. 

      Overall pipe length decreases by 1 inch

    • D. 

      The fitting stretches and the joint leaks

  • 18. 
    (409) What size pipe wrench do you use on a 1/4 inch pipe?
    • A. 

      4 inch

    • B. 

      8 inch

    • C. 

      10 inch

    • D. 

      12 inch

  • 19. 
    (410) What preparation must you make to produce a good bond between the base metal and the solder in a copper soldered joint?
    • A. 

      The solder must be lead free

    • B. 

      The pipe must be reamed and cut

    • C. 

      The solder must be 95/5 solder

    • D. 

      The metal surfaces must be perfectly clean at the joint

  • 20. 
    (410) How much solder is needed to solder a 1/2 inch connection
    • A. 

      1/2 inch

    • B. 

      3/4 inch

    • C. 

      7/8 inch

    • D. 

      1 inch

  • 21. 
    (411) When using a lever type tubing bender, you can make angles up to how many degrees?
    • A. 

      45 degrees

    • B. 

      90 degrees

    • C. 

      120 degrees

    • D. 

      180 degrees

  • 22. 
    (411) What action creates an watertight and airtight seal on a ferruled joint?
    • A. 

      Tighten the nut which crimps the ferrule into the tubing and against the fitting

    • B. 

      The capillary action between the components

    • C. 

      Squeezing the ferrule into the nut

    • D. 

      The compression of the tapered threads

  • 23. 
    (412) What is one disadvantage of the no-hub drainage system?
    • A. 

      No-hubs have a tendency to leak

    • B. 

      More tools are required to make this type of joint

    • C. 

      Support around the pipe may be required

    • D. 

      The pipe ends must be reinforced to ensure they do not crush under pressure

  • 24. 
    (412) When solvent welding plastic pipe, how do you insert the pipe into the fitting?
    • A. 

      Put the pipe halfway into the fitting to allow for expansion and contraction

    • B. 

      Quickly insert the pipe into the fitting with a one-quarter turning motion

    • C. 

      Insert the pipe into the fitting and give the pipe a full turn

    • D. 

      Thread the pipe into the fitting until no threads show

  • 25. 
    (412) How is large underground plastic pipe joined?
    • A. 

      Solvent welding

    • B. 

      O-ring joints

    • C. 

      Tig welding

    • D. 

      Threading

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