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Plumber's Licensing Exam: Water Supply and Distribution
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Plumber's Licensing Exam: Water Supply and Distribution
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25 Questions

1. An overflow for a 200-gal. water supply tank must be 3 in. in diameter.
2. A drainpipe with a 11/2-in. diameter is required on a water tank with a capacity of
3. A water pump must be protected from freezing.
4. Water supply pipes and fittings can contain lead up to
5. A blowout water closet with a flushometer valve
6. If a fixture is installed in a building intended for occupancy,
7. Full-opening valves are required at
8. Stop and waste valves are approved for underground water service.
9. Hot water temperature maintenance is required for pipes longer than
10. The pressure relief valve on a water tank must be rated for 50 percent less than the working pressure of the tank.
11. The minimum diameter of a water service pipe is
12. The water distribution system in a building
13. Water must be supplied to a building at
14. If the water pressure from the street is inadequate to maintain fixture flow pressure
15. The size of a fixture supply pipe
16. Approved water hammer arrestor types include
17. Hot water recirculation pipes must be
18. Metallic piping used for grounding
19. PE-AL-PEX pipe can be used for electrical grounding.
20. A water service pipe can be
21. If a pipe that had been used for another purpose has been sterilized, it can be used for potable water.
22. Pressure-reducing valves can
23. The concern about cross-connections with solar water heating systems is
24. A potable water supply is required
25. A pressure relief valve must be installed in a

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