MCQOPTIONS
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MCQOPTIONS
This section includes 4 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. |
For film wise condensation on a vertical plane, the film thickness and heat transfer coefficient h vary with distance x from the leading edge as |
| A. | decreases, h increases |
| B. | Both and h increases |
| C. | increases, h decreases |
| D. | Both and h decreases |
| Answer» D. Both and h decreases | |
| 2. |
In condensation over a vertical surface, the value of convection coefficient varies as |
| A. | k <sup>0.25</sup> |
| B. | k<sup> 0.33</sup> |
| C. | k<sup> 0.75</sup> |
| D. | k <sup>-0.5</sup> |
| Answer» B. k<sup> 0.33</sup> | |
| 3. |
Saturated steam is allowed to condense over a vertical flat surface and the condensate film flows down the surface. The local coefficient of heat transfer for condensation |
| A. | Remains constant at all heights of the surface |
| B. | Decreases with increasing distance from the top of the surface |
| C. | Increases with increasing thickness of film |
| D. | Increases with increasing temperature differential between the surface and vapour |
| Answer» C. Increases with increasing thickness of film | |
| 4. |
Condensation refers to a change from the |
| A. | Solid to a liquid phase |
| B. | Vapor to a liquid phase |
| C. | Liquid to a solid phase |
| D. | Liquid to a vapor phase |
| Answer» C. Liquid to a solid phase | |