The thermo … of a thermocouple varies with temperature … of the hot junction as … in volts where the ratio … is … If the cold junction is kept at … then the neutral temperature is

Option D. Neutral temperature is the temperature of a hot junction at which … is maximum.

Current Electricity

JEE Main 2004 · Annual, Paper 1 · Q6410

PhysicsEasy226×since 2002Q6410

The thermo

emf

of a thermocouple varies with temperature

\theta

of the hot junction as

E = a\theta + b{\theta ^2}

in volts where the ratio

a/b

{700^ \circ }C.

If the cold junction is kept at

{0^ \circ }C,

then the neutral temperature is