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. |
The parameter m = (h P/k A C) 1/2 has been stated to increase in a long fin. If all other parameters are constant, then |
| A. | Profile of temperature will remain the same |
| B. | Along the length temperature drop will be less |
| C. | The parameter influences the heat flow only |
| D. | The temperature drop along the length will be steeper |
| Answer» E. | |
| 2. |
The value of correction length for equilateral fin is |
| A. | L <sub>C</sub> = 2 L + a/4(3)<sup>1/2</sup> |
| B. | L <sub>C</sub> = L + a/4(3)<sup>1/2</sup> |
| C. | L <sub>C</sub> = 3 L + a/4(3)<sup>1/2</sup> |
| D. | L <sub>C</sub> = 6 L + a/4(3)<sup>1/2</sup> |
| Answer» C. L <sub>C</sub> = 3 L + a/4(3)<sup>1/2</sup> | |
| 3. |
A fin protrudes from a surface which is held at a temperature higher than that of its environment. The heat transferred away from the fin is |
| A. | Heat escaping from the tip of the fin |
| B. | Heat conducted along the fin length |
| C. | Convective heat transfer from the fin surface |
| D. | Sum of heat conducted along the fin length and that convected from the surface |
| Answer» D. Sum of heat conducted along the fin length and that convected from the surface | |
| 4. |
In heat dissipation from an infinitely long fin, the boundary conditions are |
| A. | t = t<sub>0</sub> at x = infinity and t = t<sub>a</sub> at x = 0 |
| B. | t = t<sub>0</sub> at x = 0 and t = t<sub>a</sub> at x = infinity |
| C. | t = t<sub>0</sub> at x = 0 and t = t<sub>a</sub> at x = 0 |
| D. | t = t<sub>0</sub> at x = infinity and t = t<sub>a</sub> at x = infinity |
| Answer» C. t = t<sub>0</sub> at x = 0 and t = t<sub>a</sub> at x = 0 | |