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Renewable Energy Practice Test: Solar Thermo-Mechanical Systems
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Avg score: 82% Most missed: “How does Stirling cycle differ from Carnot cycle?”
Solar thermo-mechanical systems convert solar energy into thermal energy, which is then used to power mechanical systems. The mechanical energy is then converted into usable forms like electricity.  Solar thermal systems are renewable technologies that use solar thermal panels to heat water and air spaces.  Concentrating solar thermal (CST) technology is a promising renewable energy solution for sustainable power production. How solar thermal energy works: Capture sunlight: Solar thermal technologies capture sunlight using flat or parabolic collectors. These collectors use mirrors and... Show more
Renewable Energy Practice Test: Solar Thermo-Mechanical Systems
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25 Questions

1. Which of the following is/are examples of heat engines?
2. Why is the efficiency of Rankine cycle less than that of Carnot cycle?
3. The type of heat engine depends on _______
4. Which of the following governs the efficiency of any practical solar thermo-mechanical system?
5. What is a heat engine?
6. What is the main problem in a solar thermo-mechanical system as the collection (operating) temperature increases?
7. Organic vapours are used small plants and low powered solar thermo-mechanical systems.
8. Heat engine efficiency increases as the source temperature _______
9. What is the operating temperature of turbines in a central receiver thermal power system? Note that “C” stands for Celsius.
10. Which of the following is a line focus collector used in a distributed power system?
11. How does an ideal Rankine cycle work?
12. In Stirling cycle, the heat addition and rejection take place at _________
13. What is the bare minimum requirement for the construction materials used in solar thermo-mechanical systems?
14. Isothermal process is a process conducted at constant temperature.
15. The choice of working fluid depends on the operating temperatures in the boiler.
16. Which of the following best describes the flow of energy in a solar thermo-mechanical system?
17. Distributed power system is a type of solar thermo-mechanical system.
18. Which of the following best describes the working of central receiver thermal power system?
19. What is Carnot efficiency?
20. How can the efficiency of Rankine cycle be improved?
21. How is energy collected in a distributed power system?
22. Heat engine efficiency increases with ________ sink temperature.
23. Which of the following best describes Brayton Cycle?
24. How does Stirling cycle differ from Carnot cycle?
25. The practical heat engine _______ theoretical efficiency.