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. |
Freon is a trade for a family of haloalkane refrigerants. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Solar thermal energy is used to perform vapour absorption refrigeration. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
How does the compression process between vapour compression and vapour absorption systems differ? |
| A. | Vapour compression uses mechanical compression while vapour absorption uses thermal compression |
| B. | Vapour compression and vapour absorption use thermal compression |
| C. | Vapour compression and vapour absorption use thermal compression |
| D. | Vapour compression uses electrical compression while vapour absorption uses mechanical compression |
| Answer» B. Vapour compression and vapour absorption use thermal compression | |
| 4. |
It is important to ensure that _______ characteristics of motor matches that of PV array. |
| A. | mechanical |
| B. | thermal |
| C. | insulating |
| D. | electrical |
| Answer» E. | |
| 5. |
How does a photovoltaic refrigeration system work? |
| A. | By converting sun’s thermal energy into electricity which is used to drive a motor coupled to a compressor |
| B. | By converting sun’s thermal energy into electricity which is used to drive an AC motor coupled to a compressor of a vapour compression system |
| C. | By converting sunlight into DC current to drive a DC motor which is coupled to a compressor of a vapour compression system |
| D. | By converting sunlight into DC current which is used to drive an AC motor coupled to a compressor of a vapour compression system |
| Answer» D. By converting sunlight into DC current which is used to drive an AC motor coupled to a compressor of a vapour compression system | |
| 6. |
Which of the following is an example of a refrigerant? |
| A. | Platinum |
| B. | CFCs |
| C. | Argon |
| D. | Nitrogen |
| Answer» C. Argon | |
| 7. |
What does a refrigerant do in a vapour compression refrigeration system? |
| A. | Removes heat from one system and empties it into another system |
| B. | Adds heat to the system |
| C. | Absorbs heat continuously |
| D. | Converts thermal energy into electrical energy |
| Answer» B. Adds heat to the system | |
| 8. |
Which of the following best describes the process of vapour compression refrigeration? |
| A. | Warm air → compressor → condenser → expansion valve → evaporator → colder air |
| B. | Evaporator → compressor → condenser → expansion valve → evaporator → colder air |
| C. | Warm air → compressor → expansion valve → evaporator → colder air |
| D. | Warm air → evaporator → compressor → condenser → expansion valve → evaporator → colder air |
| Answer» E. | |
| 9. |
Which of the following refrigeration systems are used in air-conditioning systems? |
| A. | Vapour absorption |
| B. | Vapour jet |
| C. | Vapour compression |
| D. | Liquid adsorption |
| Answer» D. Liquid adsorption | |
| 10. |
What type of energy does vapour absorption refrigeration system use? |
| A. | mechanical |
| B. | thermal |
| C. | nuclear |
| D. | electrodynamic |
| Answer» C. nuclear | |
| 11. |
Vapour compression refrigeration systems use ______ energy to perform compression. |
| A. | mechanical |
| B. | thermal |
| C. | gravitational |
| D. | nuclear |
| Answer» B. thermal | |
| 12. |
What are the types of popular refrigeration systems? |
| A. | Vapour compression and vapour adsorption |
| B. | Vapour adsorption and vapour absorption |
| C. | Vapour compression and liquid compression |
| D. | Vapour compression and vapour absorption |
| Answer» E. | |
| 13. |
What is refrigeration? |
| A. | A process where is work is done is to add heat from one system to another |
| B. | A process where heat is used by the system to do work |
| C. | A process where work is done to move heat from one system to another |
| D. | A process where work is done to add cold air into the system |
| Answer» D. A process where work is done to add cold air into the system | |
| 14. |
What is a solar powered refrigerator? |
| A. | A refrigerator that is directly sourced by electricity |
| B. | A refrigerator that is sourced by solar energy |
| C. | A refrigerator that is sourced by wind and sun |
| D. | A refrigerator that is sourced by biomass and sun |
| Answer» C. A refrigerator that is sourced by wind and sun | |
| 15. |
Which of the following are types of photovoltaic refrigeration? |
| A. | Vapour compression refrigeration and thermoelectric refrigeration |
| B. | Vapour compression refrigeration and vapour jet refrigeration |
| C. | Photovoltaics and concentrated solar power systems |
| D. | Rankine cycle and vapour jet refrigeration |
| Answer» B. Vapour compression refrigeration and vapour jet refrigeration | |