1.

The expression for thermo e.m.f. in a thermocouple is given by the relation\[E=40\,\theta -\frac{{{\theta }^{2}}}{20}\], where \[\theta \] is the temperature difference of two junctions. For this, the neutral temperature will be                                                                       [AMU (Engg.) 2000]

A.            \[100{}^\circ C\]                 
B.            \[200{}^\circ C\]
C.            \[300{}^\circ C\]                 
D.            \[400{}^\circ C\]
Answer» E.


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