MCQOPTIONS
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MCQOPTIONS
| 1. |
In the calculation of Heat Transfer Coefficient on the annulus side for heat transferred to the inner tube, which is the correct formula for equivalent diameter De? |
| A. | ( frac{4 (D_{oi}^2 D_{io}^2) frac{ }{4}}{ (D_{io})} ) |
| B. | ( frac{4 (D_{io}^2 D_{oi}^2) frac{ }{4}}{ (D_{io})} ) |
| C. | ( frac{4 (D_{oi}^2 D_{io}^2) frac{ }{4}}{ (D_{io}+D_{oi})} ) |
| D. | ( frac{4 (D_{io}^2 D_{oi}^2) frac{ }{4}}{ (D_{io}+D_{oi})} ) |
| Answer» B. ( frac{4 (D_{io}^2 D_{oi}^2) frac{ }{4}}{ (D_{io})} ) | |