A) 1127K
B) 1128K
C) 600 K
D) 1400 K
Correct Answer: A
Solution :
According to definition of thermal resistance coefficient \[\alpha =\frac{{{\text{R}}_{2}}-{{R}_{1}}}{R{{ & }_{1}}{{t}_{2}}-{{R}_{2}}{{t}_{1}}}\] \[0.00125=\frac{2-1}{1\times {{t}_{2}}-2\times {{27}^{0}}}\] \[0.00125=\frac{1}{{{t}_{2}}2-{{54}^{0}}}\] or \[{{t}_{2}}={{854}^{0}}C\] Hence, \[\begin{align} & {{t}_{2}}=854+273 \\ & \,\,\,\,\,=1127K \\ \end{align}\]You need to login to perform this action.
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