Practice Quiz

Green Plumbing - Question List

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26. Which of the following is not a factor in determining annual water savings attainable by switching to a high efficiency showerhead?
  1. Gallons per minute
  2. Maximum hot water temperature
  3. Number of persons in the household
  4. Shower minutes per person per day
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27. Why is knowledge of the potential evapotranspiration (PET) rate for a specific area important?
  1. Specifies amount of water lost that needs replacement through irrigation (and rain)
  2. Allows calculation of water amounts required for landscape irrigation
  3. Both A and B
  4. Neither A nor B
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28. Which of the following PET rates would require the most additional irrigation, assuming identical plant water needs?
  1. 1.2 inches
  2. 2.3 inches
  3. 3.0 inches
  4. 4.5 inches
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29. Which of the following includes the components of evapotranspiration, an important variable in irrigation efficiency planning?
  1. Ground evaporation and irrigation leakage
  2. Plant transpiration and ground evaporation
  3. Plant transpiration and irrigation leakage
  4. Planting density and plant transpiration
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30. What is the approximate reduction in water use through a decrease in water pressure from 75 PSI to 50 PSI?
  1. 10%
  2. 20%
  3. 40%
  4. 60%
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