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If the emf of a thermocouple, one junction of which is kept  is given by  then the neutral temperature will be

a)

b)

c)

d)



Question ID - 150805 | SaraNextGen Top Answer

If the emf of a thermocouple, one junction of which is kept  is given by  then the neutral temperature will be

a)

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

When temperature of the hot junction of a thermocouple rises, the thermo-emf increases and becomes maximum at a particular temperature.  This temperature is called neutral temperature.

Given, 

Differentiating with respect to  we get

For maximum value of

127 votes


127