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1. |
For a laminar flow of fluid in a circular tube, '' is the convective heat transfer co-efficient at velocity ''. If the velocity is reduced by half and assuming the fluid properties are constant, the new convective heat transfer co-efficient is |
A. | 1.26 |
B. | 0.794 |
C. | 0.574 |
D. | 1.741 |
Answer» C. 0.574 | |