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. |
Indirect solar dryers work on natural air convection. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which of the following is an example of indirect solar dryer? |
| A. | Wet clothes laid on wired lines |
| B. | Solar cabinet dryer |
| C. | Solar tunnel dryer |
| D. | Biomass cabinet dryer |
| Answer» C. Solar tunnel dryer | |
| 3. |
Which of the following best explains the increment in efficiency of a glass covered solar dryer? |
| A. | Greenhouse effect |
| B. | Greenhouse gas |
| C. | Climate change |
| D. | Thermohaline circulation |
| Answer» B. Greenhouse gas | |
| 4. |
A glass cover _______ solar dryers. |
| A. | decreases the efficiency of |
| B. | is not used in |
| C. | does not affect the efficiency of |
| D. | increases the efficiency of |
| Answer» E. | |
| 5. |
_______ are used as air exhausts in indirect solar dryers. |
| A. | Turbines |
| B. | Ceiling fans |
| C. | Chimneys |
| D. | Table fans |
| Answer» D. Table fans | |
| 6. |
Indirect solar dryers protect the food. |
| A. | False |
| B. | True |
| Answer» C. | |
| 7. |
Why is direct solar dryer harmful for food? |
| A. | Because direct sunlight could chemically alter some food items |
| B. | Because direct sunlight dries the food |
| C. | Because direct solar dryer does not cover the food |
| D. | Because of contaminants brought by wind |
| Answer» B. Because direct sunlight dries the food | |
| 8. |
How does an indirect solar dryer work? |
| A. | By directly exposing the substance to sunlight |
| B. | By using an electrical heater |
| C. | By heating the incoming air with the help of a black surface |
| D. | By using fire |
| Answer» E. | |
| 9. |
Which of the following surface is best suited to absorb sunlight? |
| A. | White surface |
| B. | Red surface |
| C. | Black surface |
| D. | Silver surface |
| Answer» D. Silver surface | |
| 10. |
How do wet clothes laid on wired lines dry under sunlight? |
| A. | Wind blows to accumulate more air consisting moisture near the clothes |
| B. | Wind blows away the moisture near the wet clothes air exposing them to fresh air and sunlight |
| C. | Sunlight continuously evaporates water in wet clothes without any assistance from wind |
| D. | Wind blows away the moisture near the wet clothes air exposing them to fresh air |
| Answer» C. Sunlight continuously evaporates water in wet clothes without any assistance from wind | |
| 11. |
Which of the following best indicates an example of direct solar dryer? |
| A. | Drying wet clothes on wired lines |
| B. | Using the dryer of a washing machine |
| C. | Using an electric heater |
| D. | Using a solar heater |
| Answer» B. Using the dryer of a washing machine | |
| 12. |
What is the basic working principle of direct solar dryers? |
| A. | Direct exposure of substance to fire |
| B. | Direct use of sunlight to start a heater which is then used to dry the substance |
| C. | Indirect exposure of substance to sunlight |
| D. | Dehydrating the substance by directly exposing to sunlight |
| Answer» E. | |
| 13. |
What are the two general types of solar dryers? |
| A. | Direct and active |
| B. | Indirect and passive |
| C. | Direct and indirect |
| D. | Box like and cone shaped |
| Answer» D. Box like and cone shaped | |
| 14. |
What is the most popular use of solar dryer? |
| A. | Water |
| B. | Food |
| C. | Chemicals |
| D. | Industrial substances |
| Answer» C. Chemicals | |
| 15. |
What is solar dryer? |
| A. | Use solar energy to dry substances |
| B. | Use solar energy to evaporate water and collect it within the same closed system |
| C. | Use solar energy to evaporate water and collect its condensate within the same closed system |
| D. | Use solar energy to dry liquids |
| Answer» B. Use solar energy to evaporate water and collect it within the same closed system | |