Questions and answers for exam Preparation

MCQs

Total Questions : 60 | Page 4 of 6 pages

Question 31. Why is ocean thermal energy conversion a renewable resource?

Because the temperature gradient lasts for a short period of time
Because the upwelling of cold water from the deep ocean is replaced by downwelling of surface waters
Because ocean water is available in plenty
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.

Horizontal
Low-pressure
High-pressure
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?

Horizontal and vertical
Vertical and open cycle
Open cycle and closed cycle
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.

True
False
May be True or False
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?

Thermohaline circulation
Temperature gradient
Greenhouse gases
Refrigerants

Discuss Question

Answer: Option D. -> Refrigerants
Answer: (d).Refrigerants

Question 36. Open cycle ocean thermal energy conversion systems use _____ as the working fluid.

vapour from rivers
water from rivers
vapour from seawater
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?

Japan
United States
China
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?

Oceanic water → evaporator → turbine/generator → electricity
Warm surface oceanic water → evaporator containing working fluid → turbine/generator → electricity
Cold surface oceanic water → electricity → evaporator containing working fluid → turbine/generator
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?