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What works by using two metals with different expansion rates and mercury switch?
Wiki User
∙ 12y ago
A thermostat.
Wiki User
∙ 12y ago
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Does specific heat capacities have anything to do with different metals in a bimetallic strip used in a thermostat?
The principal thing is linear expansion rates as temperatures rise, different metals have different rates of expansion. In a bimetallic strip, one layer of one metal is fused onto one layer of another metal with a different linear expansion rate, when heated the strip will curve along its length due to the different expansion rates, the greater the temperature rise, the more the curvature, this movement is used to trip a switch.
How does a heat inticipator work?
For a digital heat anticipator, a bimetallic strip is a piece of metal made by laminating two different types of metal together. The metals that make up the strip expand and contract when they're heated or cooled. Each type of metal has its own particular rate of expansion, and the two metals that make up the strip are chosen so that the rates of expansion and contraction are different. When this coiled strip is heated, the metal on the inside of the coil expands more and the strip tends to unwind. The center of the coil is connected to the temperature-adjustment lever, and the mercury switch is mounted to the end of the coil so that when the coil winds or unwinds, it tips the mercury switch one way or the other.
What type of switch would be used to switch on a kettle?
Its called a bi-metallic switch, which switches off when the kettle boils, as the switch is made from two layers of different metals, which expand at different rates when heated, which causes the sandwich of the two metals to "bend" when it heats up.
What is the role of the bimetallic strip and how it works in relationship to expansion of metals?
When heat is applied to the end, one of the metals will expand faster than the other and the coil can operate a switch or valve just as the thermocouple does.
What are different kinds of switches?
Mercury tilt switch, Knife switch, Footswitch, Reversing switch, Light switches, Electronic switches
Why is mercury used in float switches?
Because a float switch is used to switch on or on an electrical current. The electricity needs to flow through good conductors like metals, and these metal parts are able to float in the mercury.
How do you make a circuit using bimetallic strip?
The bimetallic strip is made of two different metals, bonded together. The two metals have different temperature expansion coefficients, so when the bonded assembly is heated or cooled, it curves one way or the other, allowing a switch to be opened or closed.
What is a mercury switch?
A mercury switch is an electronic switch that opens or closes a circuit when the switch, or device it is attached to, tilts.
How does a bimetallic strip works in a thermostat?
The switch contains a sandwich strip of 2 metals with two different coefficients of thermal expansion. The dial you would turn to control the temperature modifies the resistance of the circuit - thus current (or would be set digitally nowadays). When the desired temperature has been reached, one of the metals stretches more than the other. The metal sandwich curls, thus disconnecting the contact of the switch.
Explain the operation and application of a mercury switch?
The mercury switch find its application in thermostats where a rise in room temperature beyond the preset range moves the liquid mercury to the other side of the switch.
Where is the Mercury switch on a 1989 Sundance?
A mercury switch is used for connecting current to a under-hood/hatch light.
What is the line diagram symbol for a mercury tilt switch?
The diagram symbol for any tilt switch is the ball tilt switch symbol.Then in the table of contents the switch is described,whether it be a ball switch,mercury switch,etc...
