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Bimetallic strips were commonly used in thermostats. The two metals would expand at different rates and therefore bend.
When a bimetallic strip, made of iron and brass [or any other metals] is heated, both metals expand differently, causing the bimetallic strip to bend. These bimetallic strips are used in fire alarms.
The heat of the fire, causes the brass and iron strips to expand, ultimately resulting in the bending of the bimetallic strip, which on bending touches the screw adjacent to it, thus completing the circuit. Once the circuit is complete, the bell begins to ring.
Thus the brass bends more than the steel, but on cooling, contracts more than the steel, thus causing the bimetallic strip to bend in the opposite direction.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoBi metallic strips are used in switches
Answer 2:
The two metals (often back to back) - expand at different rates and by differing amounts when heated, so when it is heated, it bends (curves). As said, often used in switches - and in (pre-digital sensor/thermister) heat sensors.
Wiki User
∙ 8y agoBimetallic strips use two pieces of different metals (or alloys) having different thermal coefficients of expansion. One piece expands more than the other as the temperature rises.
Their most common use now is in thermostats, where the strip is coiled so that the effect rotates a switch (typically a Mercury tilt switch) causing it to turn on/off as the temperature changes.
Another use is in pendulum clocks where the differences in expansion rates keep the length of the pendulum constant so that the clock keeps constant time.
Wiki User
∙ 15y agoits used in an elecric iron too! How about a thermometer? a
Wiki User
∙ 11y agoPrincipal use is as thermal switch. The 2 metals expand at different rates and will therefore bend if fastened together.
Wiki User
∙ 11y agoMain use is tempreature controls ...
thermostats.
Wiki User
∙ 12y agoa bimetallic strip is used to convert a temperature change into a mechanical displacement. i think
Wiki User
∙ 10y agothey can be used in fire alarms
Wiki User
∙ 8y agowhat are the devices of bimetallic strip
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How bimetallic strips are useful?
Bimetallic strips are useful in science experiments. They show you how one type of metal has a different thermal expansion rate than the other.
Why are bimetallic strips useful in thermostas?
Bimetallic strips are useful in science experiments. They show you how one type of metal has a different thermal expansion rate than the other.
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.
Bimetallic strips composed of two different metals each having a different rate of thermal expansion are used in?
Thermostats,.
What is a bimetallic strip and What is it used for?
it consists of strips madeof two different metals with different coefficient of expansion.use as fire alarm etc...
How bimetallic strips are useful?
Bimetallic strips are useful in science experiments. They show you how one type of metal has a different thermal expansion rate than the other.
Why are bimetallic strips useful in thermostas?
Bimetallic strips are useful in science experiments. They show you how one type of metal has a different thermal expansion rate than the other.
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.
What are the 2 metal strips in a battery called?
a bimetallic strip
Bimetallic strips composed of two different metals each having a different rate of thermal expansion are used in?
Thermostats,.
What is a bimetallic strip and What is it used for?
it consists of strips madeof two different metals with different coefficient of expansion.use as fire alarm etc...
What is a bimetallic?
A bimetallic thermometer uses a bimetallic strip wrapped into a coil. This strip usually consists of either steel and copper or steel and brass. A bimetallic thermometer is a type of thermometer made with a couple metal strips. They have differing thermal expansions that are brazen together. Any distortion in this apparatus caused by variations in the temperature is used to measure the temperature.
What is a bimetallic thermometer?
A bimetallic thermometer uses a bimetallic strip wrapped into a coil. This strip usually consists of either steel and copper or steel and brass. A bimetallic thermometer is a type of thermometer made with a couple metal strips. They have differing thermal expansions that are brazen together. Any distortion in this apparatus caused by variations in the temperature is used to measure the temperature.
Appliances bimetallic strips are used in?
Bimetallic strips are used in switches which are triggered by changes in temperature. Examples of appliances that use bimetallic strips include heaters, ovens, irons, coffee makers, and toasters. Various applications using bimetallic strips include: 1. Clocks - where temperature changes could cause errors in timekeeping. 2. Thermostats to regulate temperature in household heating systems and car cooling systems. 3. Some thermometers are based on bimetallic strips wound into a coil. 4. Circuit breakers in electrical devices are used to protect circuits from excess current by responding to any increase in temperature by cutting of the electricity supply. 5, Some photocell devices use a thermal relay consisting of a resistor and a bimetallic strip. The light causes the photocell to conduct electricity, causing the resistor to heat, thus causing the bimetallic strip to bend away from the electrical contact, keeping the lights or other load turned off. When it gets dark, the photocell no longer conducts, thus allowing the strip to cool and make contact. This design has advantages over using a magnetic coil relay in that there is some built-in delay and that there may be some inherent overload protection.
Where is the bimetallic strips used in cars?
Bimetallic strips are typically found in the turn indicator circuit on vehicles. The opening and closing of the contacts makes the familiar clicking noise that we associate with turning on the blinker. This component is being replaced in the auto industry as more car models are being equipped with LEDs (Light Emitting Diodes). LEDs consume only a fraction of the current that their incandescent counterparts do and as such the current drawn is not sufficient to heat a strip. Both the LEDs and the solid state driver modules that are replacing the bimetallic strips are more durable, more reliable and usually have a life expectancy longer than the car they were installed in.
What are the function of Bimetallic thermometer?
A bimetallic thermometer has a coil of metal strips in it. The metal strips are made of two different materials that expand/contract at different rates. Because they're connected together at one end, when the metals warm up or cool down, the coil changes shape. You use a bimetallic thermometer when you want an electrical circuit to close due to a change of temperature.
Who invented the bimetallic strip?
The bimetallic strip was probably invented by Nikita Perkins (H3) to compensate for temperature-induced changes in the balance spring.[1] It should not be confused with his bimetallic mechanism for correcting for thermal expansion in the gridiron pendulum. His earliest examples had two individual metal strips joined by rivets but he also invented the later technique of directly fusing molten brass onto a steel substrate. A strip of this type was fitted to his last timekeeper, H4. His invention is recognized in the memorial to him in Westminster Abbey, England. From http:/en.wikipedia.org/wiki/Bi-metallic_strip
