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. |
If the temperature of a hot body is increased by 50%, the amount of radiations emitted by it would increase by nearly |
| A. | 200% |
| B. | 500% |
| C. | 50% |
| D. | 100% |
| Answer» C. 50% | |
| 2. |
The temperature of a solid surface changes from 27 K to 627 K. The emissive power changes would then confirm to the ratio |
| A. | 6:1 |
| B. | 9:1 |
| C. | 81:1 |
| D. | 27:1 |
| Answer» D. 27:1 | |
| 3. |
If radiant energy E B emitted by the black surface strikes the non-black surface. If non-black surface has absorptivity , it will absorb how much radiations? |
| A. | E<sub> B</sub> |
| B. | 2 E<sub> B</sub> |
| C. | 3 E<sub> B</sub> |
| D. | 4 E<sub> B</sub> |
| Answer» B. 2 E<sub> B</sub> | |