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MCQs

Total Questions : 207 | Page 21 of 21 pages
Question 201. What are drainback systems in solar water heating system?
  1.    The system that reverses the direction of flow of transfer fluid
  2.    The system that tracks the sun
  3.    The system that pumps excess transfer fluid
  4.    The system that drains the transfer fluid
 Discuss Question
Answer: Option D. -> The system that drains the transfer fluid
Answer: (d).The system that drains the transfer fluid
Question 202. What is freeze protection in a solar water heating system?
  1.    Ensures that the system is frozen
  2.    Prevents the operation of drainback system
  3.    Prevents damage to system due to freezing of transfer fluid
  4.    Ensures that the transfer fluid is frozen
 Discuss Question
Answer: Option C. -> Prevents damage to system due to freezing of transfer fluid
Answer: (c).Prevents damage to system due to freezing of transfer fluid
Question 203. Which of the following metals are used to make pipes of low cost solar water heating system?
  1.    Gold
  2.    Copper
  3.    Polymer
  4.    Silver
 Discuss Question
Answer: Option B. -> Copper
Answer: (b).Copper
Question 204. How is the heat transferred from transfer fluid to potable water in indirect solar water heating systems?
  1.    By directly exposing the substance to sunlight
  2.    By using an electrical heater
  3.    By circulating potable water through the collector
  4.    By using heat exchanger
 Discuss Question
Answer: Option D. -> By using heat exchanger
Answer: (d).By using heat exchanger
Question 205. Direct solar water heating systems ______
  1.    offer great overheating protection
  2.    are called pumped systems
  3.    offer no overheating protection
  4.    offer great freeze protection
 Discuss Question
Answer: Option C. -> offer no overheating protection
Answer: (c).offer no overheating protection
Question 206. How is water heated in a direct solar water heating system?
  1.    By circulating potable water through the collector
  2.    By directly exposing water to sunlight
  3.    By using convection from a different transfer fluid
  4.    By using heat exchanger
 Discuss Question
Answer: Option A. -> By circulating potable water through the collector
Answer: (a).By circulating potable water through the collector
Question 207. Passive systems rely on heat-driven convection.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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