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MCQs

Total Questions : 60 | Page 4 of 6 pages
Question 31. Why is ocean thermal energy conversion a renewable resource?
  1.    Because the temperature gradient lasts for a short period of time
  2.    Because the upwelling of cold water from the deep ocean is replaced by downwelling of surface waters
  3.    Because ocean water is available in plenty
  4.    Because of sun’s heat
 Discuss Question
Answer: Option B. -> Because the upwelling of cold water from the deep ocean is replaced by downwelling of surface waters
Answer: (b).Because the upwelling of cold water from the deep ocean is replaced by downwelling of surface waters
Question 32. _______ turbine is used in closed cycle ocean thermal energy conversion.
  1.    Horizontal
  2.    Low-pressure
  3.    High-pressure
  4.    Vertical
 Discuss Question
Answer: Option B. -> Low-pressure
Answer: (b).Low-pressure
Question 33. Which of the following are types of systems used in ocean thermal energy conversion?
  1.    Horizontal and vertical
  2.    Vertical and open cycle
  3.    Open cycle and closed cycle
  4.    Horizontal and closed cycle
 Discuss Question
Answer: Option C. -> Open cycle and closed cycle
Answer: (c).Open cycle and closed cycle
Question 34. Rankine Cycle is the most commonly used heat cycle for ocean thermal energy conversion.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 35. Which of the following is used as working fluid in closed cycle oceanic thermal energy conversion systems?
  1.    Thermohaline circulation
  2.    Temperature gradient
  3.    Greenhouse gases
  4.    Refrigerants
 Discuss Question
Answer: Option D. -> Refrigerants
Answer: (d).Refrigerants
Question 36. Open cycle ocean thermal energy conversion systems use _____ as the working fluid.
  1.    vapour from rivers
  2.    water from rivers
  3.    vapour from seawater
  4.    seawater
 Discuss Question
Answer: Option C. -> vapour from seawater
Answer: (c).vapour from seawater
Question 37. Where is the world’s only operating ocean thermal energy conversion plant located?
  1.    Japan
  2.    United States
  3.    China
  4.    Korea
 Discuss Question
Answer: Option A. -> Japan
Answer: (a).Japan
Question 38. Which of the following best describes the working of an ocean thermal energy conversion plant?
  1.    Oceanic water → evaporator → turbine/generator → electricity
  2.    Warm surface oceanic water → evaporator containing working fluid → turbine/generator → electricity
  3.    Cold surface oceanic water → electricity → evaporator containing working fluid → turbine/generator
  4.    Cold deep oceanic water → electricity → evaporator containing working fluid → turbine/generator
 Discuss Question
Answer: Option B. -> Warm surface oceanic water → evaporator containing working fluid → turbine/generator → electricity
Answer: (b).Warm surface oceanic water → evaporator containing working fluid → turbine/generator → electricity
Question 39. What is the byproduct of an ocean thermal energy conversion system?
  1.    Electricity
  2.    Clean water
  3.    Water vapour
  4.    Cold water
 Discuss Question
Answer: Option D. -> Cold water
Answer: (d).Cold water
Question 40. The vapourized fluid in an ocean thermal energy conversion system is converted back into working liquid.
  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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