Question

The temperature of cold junction of a
thermocouple is 0°C and temperature of hot
junction is T°C, the thermo emf is given by
E=16T-0.04T2uV.
Find the (a) neutral temperature (b)
temperature of inversion ​

Answer 1

Answer:

The inversion temperature (T

i

) of a thermocouple is that temperature of hot junction, at which thermo emf becomes zero i.e.

At T=T

i

, E=0

Putting these values in the given equation:

E=16T−0.04T

2

0=16T

i

−0.04T

i

2

0.04T

i

2

=16T

i

T

i

=16/0.04=400

o

C