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When two dissimilar metals come into contact then electrons would migrate from one to the other due to the different electronic configuration in each. Hence a contact potential is generated, may be of the order of 1/10 th of volt. This contact potential varies with temperature. So when the two junctions of such dissimilar metals are kept at two different temperatures then there will be a small difference of these contact potential of the order of 1/100 th of volt. This is the mechanism
What else can I help you with?
What is the mechanism of a thermometer?
A thermometer typically consists of a temperature-sensitive element (such as mercury or a thermocouple) that expands or contracts with changes in temperature. This expansion or contraction is then converted into a temperature reading on a scale by mechanisms such as a bimetallic strip, a digital sensor, or a liquid crystal display.
What does thermocouple produce what kind of energy?
A thermocouple produces electrical energy by utilizing the Seebeck effect, which generates a voltage when there is a temperature difference between the two junctions of dissimilar metals in the thermocouple. This electrical energy can be used to measure temperature or power electronic devices.
Does thermocouple converts chemical energy into electrical energy?
No, a thermocouple does not convert chemical energy into electrical energy. It generates electricity by using the Seebeck effect, which is based on the temperature difference between two different metals. The thermocouple produces voltage directly from heat.
What does a thermocouple do and how does it function in measuring temperature?
A thermocouple is a device that measures temperature by detecting changes in voltage when there is a difference in temperature between two different metals. When one end of the thermocouple is heated or cooled, it creates a voltage that is proportional to the temperature difference. This voltage is then converted into a temperature reading by a thermometer or temperature controller.
When does a thermocouple produce electricity?
When there is a heat differential between its ends
What is the mechanism behind darkening of lips?
malonocytes
Is thermocouple output linear?
The output of the thermocouple is linear.
What is the pairing mechanism behind high-temperature superconductivity?
The pairing mechanism behind high-temperature superconductivity is the ability of certain materials to conduct electricity with zero electrical resistance.
What is the mechanism behind the running of 4x4 vehicles?
the transfer case
Is thermocouple used in fridges?
Yes, thermocouple is used in fridges !
Which materials could you use to create a thermocouple?
To create a thermocouple one needs thermocouple wire, a means of spot welding the wire, and wire strippers. A thermocouple is used to measure temperature.
Is a thermocouple an active or passive transducer-why?
is a thermocouple an active or passive transducer?-why?
What is the purpose of the thermocouple?
The thermocouple keeps a gas pilot light burning.
What type of colour are use to paint thermocouple?
You should not paint a thermocouple.
How can I test a thermocouple on a water heater to ensure it is functioning properly?
To test a thermocouple on a water heater, you can use a multimeter to measure the voltage output. Disconnect the thermocouple from the control unit and place the multimeter probes on the thermocouple terminals. A functioning thermocouple should produce a voltage reading within the expected range. If the reading is outside this range, the thermocouple may need to be replaced.
Is thermocouple a transducer?
Yes, it's an active transducer. A thermocouple is passive not active
What is the maximum power in Watts that can be attained from a thermocouple?
not much, but it will depend on the type of thermocouple
