Home
Class 12
PHYSICS
The cold junction of a thermo couple is ...

The cold junction of a thermo couple is maintained at `30^@C`. No thermo emf is developed when the hot junction is malntained at `470^@C.` The neutral temperature is

A

`200^@C`

B

`250^@C`

C

`270^@C`

D

`300^@C`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

The e.m.f of a thermocouple one junction of which is kept at 0^@C , is given by e=at+bt^2 The neutral temperatue will be

Volume of a room is 15 m times 12 m times 8m . The room was at 22^@C in the morning.What is the percentage of initial volume of air of the room that is expelled when the room temperature reaches 30^@C at noon? The pressure remains constant during the increase in temperature ,atmospheric pressure remains constant.

A steel tape 1 m long is correctly calibrated for a temperature of 27.0 ""^(@)C . The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45.0 ""^(@)C . What is the actual length of the steel rod on that day? What is the length of the same steel rod on a day when the temperature is 27.0^(@)C ? Coefficient of linear expansion of steel =1.20 times 10^(-5)K^(-1) .

Which of the following graphs represent variations of thermo emf (E) of a thermocouple with temperature t of the junction, the cold junction being kept at 0^(@)C ?