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| Q.59 | A 1.57 kW resistance heater wire, whose thermal conductivity k = 10 W/m-K, has diameter of 5 mm and length 0.5 m and is used to boil water. If the outer surface temperature of the resistance wire is 110 °C, determine the temperature at the center of the wire. [Assume, π = 3.14] | |
| Ans | 1. 154 °C | |
| 2. 120 °C | ||
| 3. 145 °C | ||
| 4. 135 °C |
Correct Ans: 4
