0
Metals expand when heated and contract when cooled. Different metals expand & contract by different amounts. Rivet together a metal that changes a lot to another metal that doesen't change as much. Then when they are expanding/contracting the composite strip ends up bending up/down. They can actually bend quite a lot and can easily be used to trigger an on/off switch.
What else can I help you with?
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 does the bimetallic strip in an electric iron do?
It is used as a thermostat.A thermostat is a device used to control the temperature of any equipment, in this case an electric iron.Two little strips of different types of metals are welded or brazed together. These little strips will be mounted inside the the iron near to the hot plate, held down just at one side.An electrical contact will join the bimetallic strip into the electrical circuit of the iron. Another little flat metal plate will be mounted near the free end of the bimetallic strip. This little fixed plate will touch the free end of the bimetallic strip.So now you turn the iron on. The irons' hot plate heats up. The bimetallic plate heats up too as it is close to the hot plate.Ok, now is the clever bit someone once thought out. The two strips of metal heat up and expand. As the properties of the metals are different they will expand at different amounts. As the two strips are stuck together the bimetallic strip will bend.When it bends it will eventually bend away from the fixed plate. Assuming its been installed with the bimetallic strip the right way around! because the strip will bend to the side which has the metal that expands less. When it no longer touches the plate the circuit will turn off. And hence the power is turned off to the iron.So how come that dial makes the iron hotter or less hot? When you are twisting the dial you are actually squeezing some tension into the bimetallic strip so that it will have to get hotter before it will bend away from the contact and hence break the circuit.Thats the idea!
Any 5 gadgets in which bimetallic strip is used?
They're all thermostats of on kind or another: home, car, stove, hot-water heater,
What is a thermostat?
Thermostats are used to measure temperature in a room or appliance (ex.furnace). Thermostat act as temperature regulators which can turn appliances on or off at a predetermined temperature. Thermostats use the contraction of solids to measure temperature. Thermostats contain a strip made of two metals (bimetallic strip) that expand or contract depending on whether they are heated or cooled. When the metal expands or contracts it bends. The amount that the metal bends depends on the temperature. The bending provides a measure of the temperature.== Answer == A thermostat is a device used to tell temperatures.orit's an electrical switch that responds to temperature.It is a devise that controls the temperature of an item or system.Maintains predetermined temperature of engine coolant.
How could a bimetallic strip perform a practical task in life?
bimetal stip is next to the contacts it make your oven,iron and air conditions unit work that is when ever the contacts touch from how high you put it and it heat up and the iron and brass bends
What is a use of a bimetallic strip in everyday life?
thermostat
Name the gadgets in which bimetallic strip is used?
conversion calculator thermostat
What household appliance could a bimetallic strip be used?
A bimetallic strip could be used in a thermostat, where it can bend and complete or break an electrical circuit to regulate temperature.
What is the device used in thermostat?
Bimetallic strip
What happens when bimetallic strip is heated?
The bimetallic strip bends.
What is the use of a bimetallic strip in a thermostat?
The 2 metals have different coefficients of expansion so when the strip heats up it bends. This bending is arranged to separate an electrical connection so that the electrical power causing the heating is switched off, and then back on again when things cool back down slightly.
Why are bimetallic strips used in thermostats?
The two metals chosen for the bimetallic strip have different modulii of thermal expansion, The bimetallic strip bends as the temperature changes and so the strip can be used to activate relays or other electronic switches and so work as a thermostat.
The element in a thermostat that is sensitive to temperature changes is what?
The element in a thermostat that is sensitive to temperature changes is typically a bimetallic strip. This strip is made up of two different metals that expand and contract at different rates in response to temperature variations, causing the strip to bend and activate the thermostat's switch.
How is a bimetallic strip used in a thermostat?
A bimetallic strip is used in a thermostat, by concealing it inside. When the temperature goes up, the bimetallic strip expands, and turns on the circuit for the AC/compressor ,to make the temperature cooler inside wherever the thermostat is.Two metal strips of differing thermal expansion are bonded together. Because the expansion is different the metals expand by different amounts. When heated the strip therefore has to bend, the one with the greater expansion on the outside of the curvature. As the strip bends it can either make or break a circuit contact depending on the configuration of the circuit, switching on of off the current. The reverse is true when the strip cools again.
How much does a bimetallic strip cost?
The cost of a bimetallic strip can vary depending on the size, material, and manufacturer. On average, a bimetallic strip can range from a few dollars to tens of dollars.
Where can a bimetallic strip can be found?
In a thermometer,thermostat,clock or oven You can refer to wikipedia.:)
How could a bimetallic strip be used to help in every day life?
A bimetallic strip can be used as a thermometer or thermostat. The two metals expand at different rates which will make it bend. You can use this to find the temperature of an oven. When the temperature of the oven increases, the strip will curve and break the electrical contact which make the oven cool down. When the oven cools the bimetallic strip will become straight again and the electrical contact will be remade and the oven will begin to reheat again.
