MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Solar Energy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Isothermal process is a process conducted at constant temperature. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Heat engine efficiency increases with ________ sink temperature. |
| A. | no change in |
| B. | decrease in |
| C. | increment in rate of increasing |
| D. | increase in |
| Answer» C. increment in rate of increasing | |
| 3. |
Distributed power system is a type of solar thermo-mechanical system. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Heat engine efficiency increases as the source temperature _______ |
| A. | decreases |
| B. | remains the same |
| C. | decrement rate increases |
| D. | increases |
| Answer» E. | |
| 5. |
What is Carnot efficiency? |
| A. | Rate of the temperature difference divided by rate of initial temperature change |
| B. | Ratio of relative temperature between source and sink and the relative source temperature |
| C. | Ratio of absolute temperature between source and sink and the absolute source temperature |
| D. | Ratio of rate of the temperature difference and the absolute source temperature |
| Answer» D. Ratio of rate of the temperature difference and the absolute source temperature | |
| 6. |
The type of heat engine depends on _______ |
| A. | material of interconnecting pipes |
| B. | type of collector |
| C. | sunlight |
| D. | photovoltaics |
| Answer» C. sunlight | |
| 7. |
How is energy collected in a distributed power system? |
| A. | Sunlight → line focused collectors → interconnecting pipes → heat engines → turbines → electricity |
| B. | Line focused collectors → sunlight → interconnecting pipes → heat engines → turbines → electricity |
| C. | Sunlight → line focused collectors → turbines → interconnecting pipes → heat engines → electricity |
| D. | Interconnecting pipes → sunlight → line focused collectors → heat engines → turbines → electricity |
| Answer» B. Line focused collectors → sunlight → interconnecting pipes → heat engines → turbines → electricity | |
| 8. |
Which of the following is a line focus collector used in a distributed power system? |
| A. | Parabolic mirrors |
| B. | Convex mirrors |
| C. | Concave lenses |
| D. | Linear fresnel reflector |
| Answer» E. | |
| 9. |
What is the operating temperature of turbines in a central receiver thermal power system? Note that “C” stands for Celsius. |
| A. | 10 – 100 degree C |
| B. | 5000 degree C |
| C. | 500 – 800 degree C |
| D. | 200 – 500 degree C |
| Answer» D. 200 – 500 degree C | |
| 10. |
Which of the following best describes the working of central receiver thermal power system? |
| A. | Sunlight → heliostats absorb solar flux → central receiver → turbine system → electricity |
| B. | Sunlight → heliostats reflect solar flux → central receiver → turbine system → electricity |
| C. | Heliostats reflect solar flux → sunlight → turbine system → central receiver → electricity |
| D. | Heliostats reflect solar flux → sunlight → central receiver → turbine system → electricity |
| Answer» C. Heliostats reflect solar flux → sunlight → turbine system → central receiver → electricity | |
| 11. |
Which of the following is a popular solar thermal power system? |
| A. | Central receiver thermal electric power system |
| B. | Photovoltaics |
| C. | Concentrating mirrors |
| D. | Solar reflectors |
| Answer» B. Photovoltaics | |
| 12. |
Which of the following is/are examples of heat engines? |
| A. | Fuel cell vehicles |
| B. | Fuel cell energy power plants |
| C. | Photovoltaics and concentrating mirrors |
| D. | Rankine cycle and Brayton cycle |
| Answer» E. | |
| 13. |
How does heat engine convert thermal and chemical energy to mechanical energy? |
| A. | With the help of steam |
| B. | By converting the input energy into electrical energy which is then used to drive mechanical systems |
| C. | By bringing a working substance from a higher state temperature to a lower state temperature |
| D. | By converting the input electrical energy to mechanical energy |
| Answer» D. By converting the input electrical energy to mechanical energy | |
| 14. |
What is a heat engine? |
| A. | System that converts thermal energy to mechanical energy |
| B. | System that converts thermal and chemical energy to mechanical energy |
| C. | System that converts mechanical energy to thermal energy |
| D. | System that converts mechanical energy to thermal and chemical energy |
| Answer» C. System that converts mechanical energy to thermal energy | |
| 15. |
Which of the following best describes the flow of energy in a solar thermo-mechanical system? |
| A. | Solar → thermal → mechanical → electricity |
| B. | Electricity → thermal → mechanical → solar |
| C. | Mechanical → solar → electricity → thermal |
| D. | Solar → electricity → thermal → mechanical |
| Answer» B. Electricity → thermal → mechanical → solar | |