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. |
Consider the above problem, also calculate the temperature at the inside surfaces of the sphere |
| A. | 138.3 degree Celsius |
| B. | 327.8 degree Celsius |
| C. | 254.7 degree Celsius |
| D. | 984.9 degree Celsius |
| Answer» C. 254.7 degree Celsius | |
| 2. |
A hollow sphere (k = 30 W/m K) of inner radius 6 cm and outside radius 8 cm has a heat generation rate of 4000000 W/m3. The inside surface is insulated and heat is removed by convection over the outside surface by a fluid at 100 degree Celsius with surface conductance 300 W/m2 K. Make calculations for the temperature at the outside surfaces of the sphere |
| A. | 105.6 degree Celsius |
| B. | 205.6 degree Celsius |
| C. | 305.6 degree Celsius |
| D. | 405.6 degree Celsius |
| Answer» D. 405.6 degree Celsius | |
| 3. |
Identify the correct boundary condition for a hollow sphere with inside surface insulated |
| A. | At r = r <sub>1</sub>, the conduction region is perfectly insulated |
| B. | At r = r <sub>1</sub>, the conduction region is partially insulated |
| C. | Heat flow is infinity |
| D. | Heat flow is negative |
| Answer» B. At r = r <sub>1</sub>, the conduction region is partially insulated | |