MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Heat Transfer knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
When the sun lies at a mean distance from the earth, the heat flux from the sun to the outer edge of the atmosphere has been found to be |
| A. | 2350 W/m<sup>2</sup> |
| B. | 3350 W/m<sup>2</sup> |
| C. | 4350 W/m<sup>2</sup> |
| D. | 1350 W/m<sup>2</sup> |
| Answer» E. | |
| 2. |
The approximate distribution of the flow of sun s energy to the earth s surface is |
| A. | 53% is reflected back to space |
| B. | 53% is transmitted to the earth |
| C. | 9% is scattered |
| D. | 22% is absorbed in the atmosphere |
| Answer» D. 22% is absorbed in the atmosphere | |
| 3. |
Amount of heat energy radiated by unit surface of the sun in the same time workout asTake, R = mean distance of earth from the sun and r = radius of sun |
| A. | E = R<sup>2</sup> S/4 R<sup>2</sup> |
| B. | E = 4 R<sup>2</sup> S/4 R<sup>2</sup> |
| C. | E = 4 R<sup>2</sup> |
| D. | E = 4 R<sup>2</sup> S |
| Answer» C. E = 4 R<sup>2</sup> | |