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. |
Vapour compression refrigeration system is less complex than absorber refrigeration system. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
In absorber refrigeration, the solution of working fluid (ammonia) is pumped to a low pressure with a big pump. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
How is pressurization achieved in absorber refrigeration? |
| A. | By dissolving refrigerant in absorbent in the absorber section |
| B. | By dissolving refrigerant in absorbent in the evaporation section |
| C. | By evaporating refrigerant from absorbent in the absorber section |
| D. | By evaporating refrigerant in absorbent in the evaporation section |
| Answer» B. By dissolving refrigerant in absorbent in the evaporation section | |
| 4. |
Absorption refrigeration uses _______ mechanical power input as compared to vapour compression refrigeration. |
| A. | greater |
| B. | the same |
| C. | the same working fluid as |
| D. | negligible |
| Answer» E. | |
| 5. |
Efficiency of solar collector decreases with ______ |
| A. | decrease in temperature of heat exchanger |
| B. | increase in temperature of sun |
| C. | increase in temperature |
| D. | the amount of cold air given to the system |
| Answer» D. the amount of cold air given to the system | |
| 6. |
In solar vapour compression cycle, efficiency of Rankine cycle increases with _______ |
| A. | decrease in temperature of heat exchanger |
| B. | increase in temperature of heat exchanger |
| C. | the amount of heat supplied to the evaporator |
| D. | the amount of cold air released from the system |
| Answer» C. the amount of heat supplied to the evaporator | |
| 7. |
What is coefficient of performance? |
| A. | Ratio of refrigeration capacity to input solar energy |
| B. | Ratio of input solar energy to refrigeration capacity |
| C. | Product of input solar energy and refrigeration capacity |
| D. | Ratio of refrigeration capacity to input electrical energy |
| Answer» B. Ratio of input solar energy to refrigeration capacity | |
| 8. |
Which of the following is/are considered for calculating the overall efficiency of solar absorption refrigeration system? |
| A. | Coefficient of performance of absorption system |
| B. | Solar collection efficiency |
| C. | Solar insolation |
| D. | Solar collection efficiency and coefficient of performance of absorption system |
| Answer» E. | |
| 9. |
Which of the following use absorption refrigeration system? |
| A. | Heating systems |
| B. | Solar cooker |
| C. | Waste heat from cogeneration |
| D. | Solar stills |
| Answer» D. Solar stills | |
| 10. |
Which of the following best describes the process of vapour absorption refrigeration? |
| A. | Absorbing fluid vapour into liquid carrier producing vapours from solution by heating thus cooling pumping into a high pressure cycle |
| B. | Absorbing fluid vapour into liquid carrier pumping into a high pressure cycle producing vapours from solution by heating thus cooling |
| C. | Absorbing fluid vapour into liquid carrier thus cooling pumping into a high pressure cycle producing vapours from solution by heating |
| D. | Absorbing fluid vapour into liquid carrier producing vapours from solution by heating thus cooling pumping into a high pressure cycle |
| Answer» C. Absorbing fluid vapour into liquid carrier thus cooling pumping into a high pressure cycle producing vapours from solution by heating | |
| 11. |
Absorption of ammonia in a liquid solution analogous to _______ |
| A. | condensation |
| B. | evaporation |
| C. | vapourisation |
| D. | convection |
| Answer» B. evaporation | |
| 12. |
What is the working fluid in vapour absorption type systems? |
| A. | Platinum |
| B. | CFCs |
| C. | Freons |
| D. | Ammonia |
| Answer» E. | |
| 13. |
What are the three heat exchangers used in an absorption type refrigeration? |
| A. | Compressor, absorber and generator |
| B. | Absorber, generator and adsorber |
| C. | Absorber, regenerating intermediate heat exchanger and generator |
| D. | Compressor, generator and adsorber |
| Answer» D. Compressor, generator and adsorber | |
| 14. |
Which of the following types of solar energy can be used to source air conditioning systems? |
| A. | Passive solar and wind |
| B. | Passive solar and photovoltaics |
| C. | Vapour compressor and photovoltaics |
| D. | Wind and solar thermal energy |
| Answer» C. Vapour compressor and photovoltaics | |
| 15. |
Solar air conditioning system uses _______ as its energy source. |
| A. | sun |
| B. | wind |
| C. | electricity |
| D. | motor |
| Answer» B. wind | |