Home
Class 12
PHYSICS
If the temperature of cold junction of t...

If the temperature of cold junction of thermocouple is lowered, then the neutral temperature

A

increase

B

approaches inversion temperature

C

decreases

D

remain the same

Text Solution

Verified by Experts

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • CIRCULAR MOTION

    ALLEN|Exercise EXERCISE (J-A)|6 Videos

  • GEOMETRICAL OPTICS

    ALLEN|Exercise subjective|14 Videos

Similar Questions

Explore conceptually related problems

Assertion: When temperature of cold junction of a thermocouple is lowered, the value of neutral temperature of this thermo couple is raised. Reason: When the difference of temperature of two junction is raised. More thermo emf is produced.

In a copper-iron thermocouple , the temperature of cold junction is 20^(@) C and the neutral temperature is 280^(@)C . Find the temperature of inversion.

Knowledge Check

  • Assertion : When temperature of cold junction of a thermocouple is lowered, the value of neutral temperature of this thermocouple is raised. Reason : When the difference of temperature of two junction is raised, more thermo e.m.f. is produced.

    A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
    B
    If both assertion and reason are true but reason is not the cor rect explanation of the assertion.
    C
    If assertion is true but reason is false
    D
    If the assertion and reason both are false

  • The temperature of the cold junction of the thermocouple is ^(@)C and the temperature of the hot junction is T^(@)C . The relation for the thermo emf is given by, E = AT = (1)/(2) BT^(2) ltbRgt (when A = 16 and B = 0.08) . The temperature of inversion will be

    A
    `500^(@)C`
    B
    `400^(@)C`
    C
    `600^(@)C`
    D
    `460^(@)C`

  • The temperature of the cold junction of thermo-couple is 0^(@)C and the temperature of hot junction is T^(@)C . The e.m.f . is E=16T-0.04 T^(2)mu volts. The temperature of inversion is

    A
    `200^(@)C`
    B
    `400^(@)C`
    C
    `100^(@)C`
    D
    `300^(@)C`

    • Similar Questions

    Explore conceptually related problems

    Do all the thermocouples have a neutral temperature?

    The temperature of inversion of a thermocouple is 620^(@)C and the neutral temperature is 300^(@)C . What is the temperature of cold junction?

    As the temperature of hot junction of a thermo-couple is increased (while cold junction is at constant temperature), the thermo e.m.f .

    For a thermocouple, T_(c ), T_(n) " and " T_(i) denote the temperatures of cold junction, the neutral temperature and the temperatures of inversion respectively. Which one of the following relation is correct ?

    when the hot and cold junctions of a thermocouple are interchanged the thermo-emf

    Home
    Profile