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एक्सप्लेन एक्सप्लेन द टेंपरेचर जॉन विद ए हेल्प ऑफ डायग्राम​

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PHYSICS

Explain neutral and inversion temperatures with the help of a graph between the thermo emf and the temperature of the hot junction in a thermocouple.

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ANSWER

Here, T

c

is the temperature of the cold junction which is maintained at 0

o

C.

T is the temperature of the hot junction.

T

n

is the neutral temperature and T

i

is the inversion temperature.

The temperature of the hot junction at which thermo-emf in the thermocouple becomes maximum is called neutral temperature T

n

for that thermocouple. For a given thermocouple, T

n

has a fixed value.

On further increasing the temperature of the hot junction,after T

n

has reached, the thermo-emf decreases and becomes equal to 0

o

C at a particular temperature called temperature of inversion T

i

.

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