Plumbing Competency Test

10 Questions

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Competency Test Quizzes & Trivia

Plumbing is something that exists in almost every household or building and if you can be a certified plumber the jobs you have will be unlimited as the skill is not easy to perfect. This test is designed to assess general knowledge of basic plumbing principles. Give it a shot and see just how ready you are to tackle the upcoming final exam.


Questions and Answers
  • 1. 
    What fitting is required to join copper with galvanized pipe?
    • A. 

      Adaptor

    • B. 

      Coupling

    • C. 

      Dialectric Union

    • D. 

      Solder Joint

    • E. 

      None of the above

  • 2. 
    • A. 

      1 1/4"

    • B. 

      1 1/2"

    • C. 

      1 3/4"

    • D. 

      2"

    • E. 

      None of the above

  • 3. 
    What size of P-Trap is required for a kitchen sink?
    • A. 

      1"

    • B. 

      1 1/4"

    • C. 

      1 1/2"

    • D. 

      1 3/4"

    • E. 

      None of the above

  • 4. 
    What is the name of the fitting that connects the P-Trap to the drain?
    • A. 

      Union

    • B. 

      Coupling

    • C. 

      Trap Adaptor

    • D. 

      Clamp

    • E. 

      None of the above

  • 5. 
    Name the trap assembly used when the drain is centered under one bowl of the kitchen sink.
    • A. 

      Center Outlet Continuous Waste

    • B. 

      End Outlet Continuous Waste

    • C. 

      Under-the- Sink Assembly

    • D. 

      Single Trap Assembly

    • E. 

      None of the above

  • 6. 
    What prevents gases from entering a home or building?
    • A. 

      Back Flow Preventer

    • B. 

      Anti-Syphon Valve

    • C. 

      P-Trap

    • D. 

      Atmospheric Pressure

    • E. 

      None of the above

  • 7. 
    What is the minimum size drain for a water closet?
    • A. 

      1 1/2"

    • B. 

      2"

    • C. 

      3"

    • D. 

      4"

    • E. 

      None of the above

  • 8. 
    What size of drain is required for a combination tub/shower?
    • A. 

      1 1/2"

    • B. 

      2"

    • C. 

      3"

    • D. 

      4"

    • E. 

      None of the above

  • 9. 
    • A. 

      1 1/2"

    • B. 

      2"

    • C. 

      3"

    • D. 

      4"

    • E. 

      None of the above

  • 10. 
    • A. 

      1 1/2"

    • B. 

      2 "

    • C. 

      3"

    • D. 

      4"

    • E. 

      None of the above