MCQOPTIONS
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MCQOPTIONS
| 1. |
A plane wall of thickness δ has its surfaces maintained at temperatures T1 and T2. The wall is made of a material whose thermal conductivity varies with temperature according to the relation k = k0 T2. Find the expression to work out the steady state heat conduction through the wall?$ |
| A. | Q = 2A k<sub>0</sub> (T <sub>1 </sub><sup>3</sup> – T <sub>2 </sub><sup>3</sup>)/3 δ |
| B. | Q = A k<sub>0</sub> (T <sub>1 </sub><sup>3</sup> – T <sub>2 </sub><sup>3</sup>)/3 δ |
| C. | Q = A k<sub>0</sub> (T <sub>1 </sub><sup>2</sup> – T <sub>2 </sub><sup>2</sup>)/3 δ |
| D. | Q = A k<sub>0</sub> (T <sub>1</sub> – T <sub>2</sub>)/3 δ |
| Answer» C. Q = A k<sub>0</sub> (T <sub>1 </sub><sup>2</sup> ‚Äö√Ñ√∂‚àö√ë‚àö¬® T <sub>2 </sub><sup>2</sup>)/3 ‚âà√≠¬¨‚Ä¢ | |