MCQOPTIONS
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MCQOPTIONS
This section includes 5 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. |
Which of the following is an example of forced convection? |
| A. | Chilling effect of cold wind on a warm body |
| B. | Flow of water in condenser tubes |
| C. | Cooling of billets in the atmosphere |
| D. | Heat exchange on cold and warm pipes |
| Answer» C. Cooling of billets in the atmosphere | |
| 2. |
A radiator in a domestic heating system operates at a surface temperature of 60 degree Celsius. Calculate the heat flux at the surface of the radiator if it behaves as a black body |
| A. | 697.2 W/m<sup>2</sup> |
| B. | 786.9 W/m<sup>2</sup> |
| C. | 324.7 W/m<sup>2</sup> |
| D. | 592.1 W/m<sup>2</sup> |
| Answer» B. 786.9 W/m<sup>2</sup> | |
| 3. |
Thermal conductivity is maximum for which substance |
| A. | Silver |
| B. | Ice |
| C. | Aluminum |
| D. | Diamond |
| Answer» E. | |
| 4. |
The rate equation used to describe the mechanism of convection is called Newton s law of cooling. So rate of heat flow by convection doesn t depend on |
| A. | Convective heat transfer coefficient |
| B. | Surface area through which heat flows |
| C. | Time |
| D. | Temperature potential difference |
| Answer» D. Temperature potential difference | |
| 5. |
Convective heat transfer coefficient doesn t depend on |
| A. | Surface area |
| B. | Space |
| C. | Time |
| D. | Orientation of solid surface |
| Answer» B. Space | |