Practice Quiz

Green Plumbing - Question List

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226. Which of the following is the most common type of freeze protection for use with open loop solar thermal systems?
  1. Drain-down
  2. Dribble valve
  3. Manual drain-down
  4. Recirculating
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227. Which of the following is a primary means of controlling for a freezing hazard in a solar thermal system?
  1. Add a heating coil blanket under the panels
  2. Use a closed system with a heat exchanger
  3. Run a hot water circulation line to the collectors
  4. Exhaust household warm air to the collector zone
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228. Which of the following is not a type of information provided by the Database of State Incentives for Renewables & Efficiency (DSIRE)?
  1. State rebates and credits related to solar installations
  2. Solar component ratings and reviews
  3. State policies related to solar installations
  4. Research and analysis consulting on renewables
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229. What is the percentage of the federal investment tax credit in place for solar energy systems that begin construction through the end of 2019?
  1. 10%
  2. 20%
  3. 30%
  4. 40%
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230. Each of the following is a generally-required condition for eligibility for solar hot water financial incentives, except:
  1. Third-party system certification
  2. Complete documentation for system, components, install
  3. Installation by licensed contractor and/or appropriately-trained homeowner
  4. Preliminary site assessment
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