MCQOPTIONS
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MCQOPTIONS
| 1. |
A 0.10 cm diameter and 15 cm long wire has been laid horizontally and submerged in water at atmospheric pressure. The wire has a steady state voltage drop of 14.5 V and a current of 42.5 A. Determine the heat flux of the wire.The following equation applies for water boiling on a horizontal submerged surface |
| A. | nH = 1.54 (Q/A) <sup>0.75</sup> = 5.58 (d t)<sup> 3</sup> W/m<sup>2 </sup>K where Q/A is the heat flux rate in W/m<sup>2</sup> and d t is the temperature difference between surface and saturation |
| B. | 1.308 * 10 <sup>8 </sup>W/m<sup>2</sup> |
| C. | 1.308 * 10 <sup>7 </sup>W/m<sup>2</sup> |
| D. | 1.308 * 10 <sup>6 </sup>W/m<sup>2</sup> |
| E. | 1.308 * 10 <sup>5 </sup>W/m<sup>2</sup> |
| Answer» D. 1.308 * 10 <sup>6 </sup>W/m<sup>2</sup> | |