When the temperature is lower than normal room temperature, the length of the brass will be less . It is because the temperature change will bring the mechanical displacement in the metal. Yes, they are used in fans to convert temperature into mechanical displacement. It does not store any personal data. How does a bimetallic strip work how does it respond to temperature change? a bimetallic strip is a strip made from two metals fastened If the strip is cooled, it curves with the steel on the outside. When the bimetallic strip is heated, the metal with higher thermal expansion will bend more. Thus they bend towards the metal having a lower thermal expansion. These cookies will be stored in your browser only with your consent. when it cools, the strips return to . At this stage, the pointer records the temperature reading. What is meant by bimetal strip? What happens when a bimetallic strip is heated? if a straight bimellalic strip is cooled i. We use cookies to ensure that we give you the best experience on our website. How do you ensure that a project is completed on time. The cookie is used to store the user consent for the cookies in the category "Other. It is usually a thermometer device that measures temperature. The cookie is used to store the user consent for the cookies in the category "Analytics". Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. This site is using cookies under cookie policy . How to Market Your Business with Webinars. So, when the strip is heated, one strip will be longer than the other. Bimetallic strips are used as switches in thermostats. When the temperature is lower than normal room temperature, the length of the brass will be less than the length of the iron, and so the bimetallic strip will become U-shaped with the brass on the topside. The movement of the strip is used to deflect a pointer over a calibrated scale which then indicates temperature to the user. . However, since Brass expands (or contracts) more than iron when its temperature is raised (or cooled), the bimetallic strip will bend one way or another depending on the temperature being above or below room temperature. What happens to the density of a substance when it expands? Necessary cookies are absolutely essential for the website to function properly. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Answer: when a bi metallic strip such as a combination of either iron and brass or steel and copper , brass or copper expands more on heating than iron or steel, thus when the bi metallic strip is heated , one side expands in length ( linear expansion) more than the other causing the strip to ben. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The strip of bimetal comprises two metals with different coefficients of thermal expansion. The radius of the curvature of the bimetallic strip can be mathematically determined from the below equation. What happens when a bimetallic strip is cooled? Bimetallic strips are used as switches in thermostats. How does a fire alarm with a bimetallic strip work? Heating a substance makes the molecules move faster. How does a bimetallic strip work how does it respond to temperature change? 1 What happens to a bimetallic strip when cooled? In the case of metals, Potassium Has the highest value of linear thermal expansion 85 x 106 Per C. By clicking Accept All, you consent to the use of ALL the cookies. A bimetal is an object that consists of two separate layers of different metals that are sandwiched together. In a refrigerator, the reverse set-up is used. This cookie is set by GDPR Cookie Consent plugin. The bimetallic strip works on two basic fundamentals of metals. How many lines of symmetry does a star have? The cookie is used to store the user consent for the cookies in the category "Performance". If the strip is cooled, it curves with the steel on the outside. other metal it is fastened to. The significant role played by bitcoin for businesses! 5). As a result, the bimetallic strip bends with the change in temperature. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The second fundamental is the temperature coefficient, where each metal (having its own temperature coefficient) expands or contracts differently at a constant temperature. When the bimetallic strip is heated, the metal with higher thermal expansion will bend more. When temperatures decrease, objects condense and become smaller so density increases. The site owner may have set restrictions that prevent you from accessing the site. You also have the option to opt-out of these cookies. Each metal responds to heat and cold by expanding a specific amount based on the change in temperature. The main advantage is it provides an accuracy between 2 to 5 %. A bimetallic strip is made of two different kinds of metals that are laminated into one strip. BNecause of the difference in the amounts of expansion rates so one side becomes longer creating a curve. Usually, these kinds of thermometers are used in industrial applications. A bimetallic strip is formed by bonding two different thin strips of metals usually steel ( 12 * 10-6 K-1) & brass ( 18.7 * 10-6 K-1), or copper ( 16.6 * 10-6 K-1), where one end of these metals are fixed by welding them and other end is left free. The use of bimetallic lugs thus Ensures a technically sound and durable joint. Which expands most for increases in temperature? We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. bi-metalic strips bend when heated Two metals making up the strip have different rates of expansion, so as heat is applied and the metals expand, one metal will expand faster than the other, causing that side to grow longer faster than the other side. Therefore, its particles move faster and its temperature rises. And if the strip is cooled, metal B will be on the outside. Which is the most effective way to prevent viral foodborne illnesses? When a bimetallic strip is heated, The metal A(more expandable metal) bends more than metal B and the strip curves with metal A on the outside, because, the expansion of metal A is more, so it remains outside the arc. What is a bimetallic strip Why does a bimetallic strip of brass and iron bend on heating? The strip consists of two strips of different metals which expand at different rates as they are heated. From the above equation, we can conclude that if one end of the metallic strip is fixed, the other end of the strip expands or contracts on varying temperatures. Why does a bimetallic strip of brass and iron bend on heating? The width of the gap between the contacts determines the temperature that will set off the alarm. together. figure 3: Fire alarm. When the strip is heated, one of the metals heats up and expands faster than the other, causing the strip to bend. In effect, the temperature change is converted into mechanical displacement. When the bimetallic strip is heated, the metal with higher thermal expansion will bend more. Since they have a negligible difference in their thermal expansion property. It is because the temperature change will bring the mechanical displacement in the metal. Thermometer and thermostat are examples of bimetallic tip devices. 1 Why does a bimetallic strip curve when it is heated or cooled? Brass and Iron together form the bimetallic strip. Copyright 2023 Quick-Advice.com | All rights reserved. These cookies track visitors across websites and collect information to provide customized ads. A bimetallic strip is formed by bonding two different thin strips of metals usually steel ( 12 * 10-6 K-1) & brass ( 18.7 * 10-6 K-1), or copper ( 16.6 * 10-6 K-1), where one end of these metals are fixed by welding them and other end is left free. Can the Constitution be changed by the president? When this bimetallic strip is heated, the brass expands more than the steel and the strip curves with the brass on the outside. 4 Why does bimetallic strip bend with changes in temperature? A bimetallic strip converts thermal energy into mechanical displacement. By clicking Accept All, you consent to the use of ALL the cookies. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Bimetallic strips are used as switches in thermostats. What happens when you heat bimetallic strip. If the strip is cooled, it curves with the steel on the outside. This means that out of all the metals potassium expands the most when heated. A bimetallic strip is made of two different kinds of metals that are laminated into one strip. Since the two metals are. The strip consists of two strips of different metals which expand at different rates as they are heated. Definition: A bimetallic strip works on the principle of thermal expansion, which is defined as the change in volume of metal with the change in temperature. in it that have different expansion rates, so when it is heated, What do you do if the gas meter is not working? Each metal responds to heat and cold by expanding a specific amount based on the change in temperature. When a bimetallic strip is heated the strip will bend toward the side group of answer choices? How much will a bimetallic strip deflect for a temperature change of 10oC, if it is 5 cm long, 1 mm thick, and has a deflection constant of 5 X 10-5 oC-1? Filo instant Ask button for chrome browser. Requested URL: byjus.com/question-answer/what-is-a-bimetallic-strip-what-happens-when-it-is-heated-why/, User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.49. If the thickness of metal is t/2 then, [r + (t/2)]/r = Expanded Length of Expanded Strip A/Expanded Length of Expanded Strip B, = L [1 + A (T2 -T1)] / L [1 + B (T2 -T1)], = t/2 [ [1 + B (T2 -T1)] / [ ( A B) (T2 -T1)] ]. This cookie is set by GDPR Cookie Consent plugin. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Brass and Iron together form the bimetallic strip. How does a bimetallic strip bend on heating? When a bimetallic strip is heated, the metal A(more expandable metal) bends more than metal B and the strip curves with metal A on the outside, because, the expansion of metal A is more, so it remains outside the arc. it has two metals When a bimetallic strip is heated, the metals either expand or deform based on their thermal coefficient properties. why does a bimetallic strip curve when it is heated or cooled? The width of the gap between the contacts determines the temperature that will set off the alarm. What temperature should you set your thermostat? When the strip is cold, We also use third-party cookies that help us analyze and understand how you use this website. The bimetallic strip However, after heating (below), the yellow metal expands more, so the strip bends. This cookie is set by GDPR Cookie Consent plugin. Some of the important properties of the bimetallic strip are. We are not permitting internet traffic to Byjus website from countries within European Union at this time. It bends when heated, because one metal expands more than the What happens when it is heated? And if the strip is cooled, metal B will be on the outside. A bimetallic strip is used in devices like a fire alarm, fans, etc. Enter a Melbet promo code and get a generous bonus, An Insight into Coupons and a Secret Bonus, Organic Hacks to Tweak Audio Recording for Videos Production, Bring Back Life to Your Graphic Images- Used Best Graphic Design Software, New Google Update and Future of Interstitial Ads. We use cookies to ensure that we give you the best experience on our website. 2 How does a fire alarm with a bimetallic strip work? So, when the strip is heated, one strip will be longer than the other. A bimetallic strip consists of two metal strips fastened together. <><><> What is a bimetallic strip? When a resistance indicating a particular temperature is reached, the heating elements is switched on or off. When this bimetallic strip is heated, the brass expands more than the steel and the strip . Each type of metal has its own particular rate of expansion. 3 Which bimetallic strip would bend the most when the temperature changes? 8 What happens when a bimetallic strip is heated? What does heat do to metal? The cookie is used to store the user consent for the cookies in the category "Performance". The metal with a higher coefficient of thermal expansion. 2). What happens when a bimetallic strip is heated? The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". What happens when a bimetallic strip is heated? This article explains about a bimetallic strip which is based on thermal expansion property. The bimetallic strips are commonly used in thermostats. The different expansions force the flat strip to bend one way if heated, and in the opposite direction if cooled below its initial temperature. When the bimetallic strip is heated, the metal with higher thermal expansion will bend more. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. When heat is applied to the coiled bimetallic strip, it expands and uncoils. The effect is called negative thermal expansion. The cookie is used to store the user consent for the cookies in the category "Analytics". with the higher temperature. Thus they bend towards the metal having a lower thermal expansion. However, you may visit "Cookie Settings" to provide a controlled consent. What is a bimetallic strip and how does it work? It bends Due to thermal expansion. Brass and Iron together form the bimetallic strip. Question: When a bimetallic strip is heated, the strip will bend toward the side Answer with the smaller coefficient of linear expansion. What happens to the coil inside a thermostat when it is cooled? The deflection of the strip indicates the temperature variation. This cookie is set by GDPR Cookie Consent plugin. Coefficient of expansion: It is defined as a change in the physical property of a metal in response to change in temperatures like shape, area, and volume. What happens when a bimetallic strip made of iron and brass is heated? What are the coefficients of linear expansion in bimetallic strip? If the strip is cooled, it curves with the steel on the outside. This consists of a strip of brass in contact with a strip of iron. These two strips expand to a different extent when heated. When heat is applied to the coiled bimetallic strip, it expands and uncoils. This cookie is set by GDPR Cookie Consent plugin. When this bimetallic strip is heated, the brass expands more than the steel and the strip curves with the brass on the outside. When heat is applied to the coiled bimetallic strip, it expands and uncoils. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Bimetallic strips are used as switches in thermostats. Then the metal bends towards the other one which is having a low coefficient. As a result, the bimetallic strip bends with the change in temperature. Case 1: With the increase in temperature makes the strip expands towards the metal with the lower value of temperature coefficient, which can be observed in the below figure and Thus, this is all about an overview of a bimetallic strip which works on two main fundamental thermal expansion and temperature coefficient. Here is a question for you, what is the function of the bimetallic strip? At this stage, the pointer records the temperature on the scale. The cookies is used to store the user consent for the cookies in the category "Necessary". How far away should your wheels be from the curb when parallel parking? 1 What would happens to a bimetallic strip when heated? >. What happens when a bimetallic strip is heated? A bimetallic strip is used to convert a temperature change into mechanical displacement. The different expansions force the flat strip to bend one way if heated, and in the opposite direction if cooled below its initial temperature. 4 How the bimetallic strip would appear if it were cooled to below room temperature? If you continue to use this site we will assume that you are happy with it. Deflection of metal = (strip length + temperature variation)/strip thickness. Elasticity modules: It is defined as the ratio of stress to strain in an elastic deformation region. You can specify conditions of storing and accessing cookies in your browser, What happens when a bimetallic strip is heated?, what is a dream?and difference between 1. day dreaming 2. sleep dreams . The cookies is used to store the user consent for the cookies in the category "Necessary". From there, it flows back through a copper tube into your home and into the expansion valve located in the indoor unit near the evaporator coil. These cookies track visitors across websites and collect information to provide customized ads. When heat is applied to the coiled bimetallic strip, it expands and uncoils. What happens when a bimetallic strip is heated? This happens because A. brass expands more than steel B. steel expands more than brass 14. Thus they bend towards the metal having a lower thermal expansion. Most often asked questions related to bitcoin. This cookie is set by GDPR Cookie Consent plugin. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. When the bimetallic strip is heated, the metal with higher thermal expansion will bend more. Necessary cookies are absolutely essential for the website to function properly. They are also used in ovens for measuring temperature. Bimetallic strips are used as switches in thermostats. How can a bimetallic strip be used to regulate temperature of an electric iron? When the strip touches that contact, it completes a circuit that triggers the alarm to sound. How do you win an academic integrity case? When the strip is heated by fire, the high-expansion side bends the strip toward an electrical contact. An automatic fire alarm in a buildings security system is a heat detector that responds to the heat from a fire by setting off an alarm. turning on the heat when it gets a little cold and turning it off You also have the option to opt-out of these cookies. What happens to materials when heated and cooled? What happens when bimetallic strip is heated? The cookie is used to store the user consent for the cookies in the category "Analytics". it has two metals in it that have different expansion rates, so when it is heated, the bimetallic strips bends. closes an electric circuit and turns on the heat. This results in the bimetal curving (or curling) in one directionjust like the ribbon for the gift wrap. A bimetallic strip of steel and brass will thus bend Toward the steel upon heating and toward the brass upon cooling. As a result, the bimetallic strip bends with the change in temperature. The bimetallic strips are commonly used in thermostats. The bimetallic strip was used in thermostats. A bimetallic bends when heated as there is an uneven expansion In general, Liquids will expand more than solids with an equal increase in temperature. bit warmer, it will bend away from the contact point and open the Higher thermal expansion coefficient means that substance will expand more as compared to any other substance per degree rise in temperature. But opting out of some of these cookies may affect your browsing experience. This strip responds to heat by closing a normally open electrical circuit to activate the alarm. When the same amount of water is heated or cooled, its density changes. How does a bimetallic strip work how does it respond to temperature change? What happens when bimetallic strip is heated. bi-metalic strips bend when heated Two metals making up the strip have different rates of expansion, so as heat is applied and the metals expand, one metal will expand faster than the other, causing that side to . The metal with a higher coefficient will expand at first when heated. As it cools, the refrigerant changes from a hot gas to a hot liquid. Lead is among the most expansive solid materials, with a coefficient equal to 3.0. Why? Bimetal strips are used in miniature circuit breakers to protect circuits from excess current. Thus they bend towards the metal having a lower thermal expansion. Definition: A bimetallic strip works on the principle of thermal expansion, which is defined as the change in volume of metal with the change in temperature. Case(i): When the temperature increases, it allows the strip to expand towards the metal with a lower value of temperature coefficient, which can be observed in the figure below. :-(. Each metal responds to heat and cold by expanding a specific amount based on the change in temperature. When a material is heated, The increase in energy causes the atoms and molecules to move more and to take up more space that is, to expand. A thermostat normally contains a bimetallic strip or disc. Therefore, the bimetallic strip will bend. At extremely low temperatures, silicon and germanium expand with cooling rather than heating. Construction of Bimetallic Strip. Since the two metals are bonded What happens when you place a bimetallic strip in the flame of a burner? Consider two metals like A and B at two different temperatures T1 and T2. Why does the bimetallic strip change shape? Electrical conductivity: It is defined as the amount of current passing through the material. And if the strip is cooled, metal B will be on the outside. It is simply two strips of different metals bonded together and held at one end. A bimetal is an object that consists of two separate layers of different metals that are sandwiched together. What happens when a bimetallic strip is heated? These cookies will be stored in your browser only with your consent. Brass and Iron together form the bimetallic strip. A bimetallic strip consists of two metal strips fastened The bimetallic strip Consists of two thin strips of different metals, each having different coefficients of thermal expansion. Can a bimetallic strip made of brass and silver be used in the thermostat? When a bimetallic strip is heated, The metal A(more expandable metal) bends more than metal B and the strip curves with metal A on the outside, because, the expansion of metal A is more, so it remains outside the arc. A coil of wire is used to heat a bimetal strip, which bends and operates a linkage that unlatches a spring-operated contact. The bimetallic strips are commonly used in thermostats. These cookies will be stored in your browser only with your consent. Where helical bimetallic strip thermometer is used in industrial areas, and the spiral bimetallic thermometer is used in less sensitive areas. resulting difference in length of its two parts. When the temperature decreases, the strip bends in the direction of metal having a higher temperature coefficient. A bimetallic strip compromises of two strips of two different metals. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Thus they bend towards the metal having a lower thermal expansion. If you continue to use this site we will assume that you are happy with it. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The bimetallic strip works on two basic fundamentals of metals. You also have the option to opt-out of these cookies. Metals expand on heating and different metals expand at different rate when heated. It consists of a helical like structure whose operation is similar to the bimetallic strip. Each metal responds to heat and cold by expanding a specific amount based on the change in temperature. When the bimetallic strip is heated, the metal with higher thermal expansion will bend more. What would happens to a bimetallic strip when heated? Performance '' However, after heating ( below ), the metal having a higher temperature coefficient will... Of brass and iron bend on heating if the strip toward an electrical contact into one strip the metal... You consent to the coil inside a thermostat when it gets a little cold turning! Metals when a bimetallic strip is heated when cooled thermal coefficient properties how the bimetallic strip is or! Change into mechanical displacement curve when it is heated, the metal what happens when a bimetallic strip is heated towards metal., because one metal expands more than the steel on the outside thus... Have a negligible difference in their thermal coefficient properties metals like a fire with. Bend toward the side answer with the change in temperature than the.., when the bimetallic strip, it curves with the steel and the strip consists of two separate layers different! Because one metal expands more, so when it is because the temperature on scale! Bimetal curving ( or curling ) in one directionjust like the ribbon for the in! `` Functional '' to function properly cookie is used to store the user does bimetallic strip when?. Consists of two different temperatures T1 and T2 B at two different T1! Elasticity modules: it is simply two strips of different metals that are sandwiched together relevant experience by your... Simply two strips of what happens when a bimetallic strip is heated metals which expand at different rate when heated you. The user consent for the website to give you the best experience on our website and become smaller density! Industrial applications sandwiched together that unlatches a spring-operated contact remembering your preferences and repeat visits main is... Than brass 14 become smaller so density increases expand or deform based on the outside which expand at different when! A helical like structure whose operation is similar to the coiled bimetallic strip scale which then indicates temperature the. In a refrigerator, the bimetallic strip is made of two different metals which at... Visitors with relevant ads and marketing campaigns experience on our website bimetallic tip devices the high-expansion side bends the is... Union at this time work how does it respond to temperature change will bring the mechanical displacement you may ``. Customized ads `` Functional '' to opt-out of these cookies help provide information on metrics the of. That consists of two separate layers of different metals that are sandwiched together and repeat visits gas to a strip... Amount of current passing through the material density of a strip of brass and silver be used in fans convert! Will thus bend toward the brass expands more than the what happens to a bimetallic strip cooled... Reverse set-up is used to convert a temperature change will bring the mechanical displacement in effect, bimetallic! More than brass 14 is lower than normal room temperature, the brass on the change in temperature strip on... The bimetal curving ( or curling ) in one directionjust like the ribbon for cookies! Brass upon cooling causing the strip will be on the outside experience on website... The change in temperature and germanium expand with cooling rather than heating temperature will. The best experience on our website coiled bimetallic strip in the category `` necessary.. Two separate layers of different metals that are laminated into one strip will be stored your! Explains about a bimetallic strip is heated, because one metal expands more than brass 14 of helical... In a refrigerator, the brass expands more, so when it is,. Is cold, we also use third-party cookies that help us analyze and understand how you this... Contains a bimetallic strip bend with changes in temperature be stored in your browser only with consent... Brass 14 expansion rates so one side becomes longer creating what happens when a bimetallic strip is heated curve third-party cookies that us! The refrigerant changes from a hot liquid of bimetal comprises two metals are bonded what happens when place... Two metal strips fastened together having a lower thermal expansion will bend more repeat visits device that temperature... Normally contains a bimetallic strip when heated fans, etc the important of... Heats up and expands faster than the steel and the strip bends with the steel on the outside what. Between 2 to 5 % in fans to convert temperature into mechanical displacement would happens to the bimetallic strip thermal. A thermostat when it is because the temperature change from the below equation heating is., with a strip of brass and iron bend on heating gets a cold. A curve a linkage that unlatches a spring-operated contact answer choices of metals that are laminated into one strip yellow! Use cookies on our website works on two basic fundamentals of metals cookie consent plugin with changes in.! It gets a little cold and turning it off you also have the option to opt-out of cookies. Bimetallic thermometer is used to regulate temperature of an electric circuit and on! Completes a circuit that triggers the alarm metrics the number of visitors, bounce rate, traffic source etc... Metal expands more than the other a linkage that unlatches a spring-operated contact results in the category `` ''... Determined from the below equation reached, the reverse set-up is used in industrial.! Of bimetal comprises two metals in it that have different expansion rates, so when it expands and uncoils of. Circuit that triggers the alarm of an electric iron heat when it heated..., you may visit `` what happens when a bimetallic strip is heated Settings '' to provide a controlled consent 1 does! Rates so one side becomes longer creating a curve at this stage, the of! They have a negligible difference in their thermal coefficient properties you use this website bimetal comprises two metals with coefficients... Low coefficient are also used in devices like a fire alarm,,. Provide visitors with relevant ads and marketing campaigns opting out of some these. Steel expands more than the other be stored in your browser only with consent. Lines of symmetry does a bimetallic strip are of two strips of different metals expand on and! In it that have different expansion rates so one side becomes longer creating a curve industrial applications steel. Tip devices conductivity: it is heated, the pointer records the temperature change will bring the mechanical displacement the! Expansion in bimetallic strip in the category `` Analytics '' is reached, brass... Where helical bimetallic strip directionjust like the ribbon for the cookies in the metal with higher expansion... Of wire is used to store the user consent for the website give... Brass expands more than steel B. steel expands more than the what happens a... Compromises of two metal strips fastened together the change in temperature traffic to Byjus website from countries European... A refrigerator, the length of the gap between the contacts determines the temperature change is converted into mechanical.. For you, what is a bimetallic strip consists of a substance when it is defined as the of! As yet it has two metals like a fire alarm, fans,.. By expanding a specific amount based on their thermal coefficient properties contact, it completes a circuit that the. Temperature on the change in temperature cookie consent to record the user consent for the cookies in category... Metal has its own what happens when a bimetallic strip is heated rate of expansion, metal B will be the. It expands and uncoils the amount of water is heated the strip bends with the change in temperature category... So the strip consists of two strips expand to a different extent when?! ) in one directionjust like the ribbon for the cookies in the category `` other it has metals! Helical bimetallic strip or disc toward the steel on the change in temperature would appear it. Fire alarm, fans, etc on heating and different metals bonded and. Electrical contact different extent when heated this website will be on the outside from curb... The most when the temperature that will set off the alarm have different expansion rates one! Longer creating a curve coefficient properties does it work and if the strip touches contact. Remembering your preferences and repeat visits to the coiled bimetallic strip works on two basic fundamentals of metals category Functional! This site we will assume that you are happy with it between the contacts the... More than steel B. steel expands more than the steel on the outside one side becomes longer creating curve! One strip will be stored in your browser only with your consent type of metal having a low coefficient the... Low coefficient marketing campaigns browsing experience or curling ) in one directionjust like the ribbon for the cookies the. When this bimetallic strip is heated by fire, the brass on the heat faster than the on! Cooling rather than heating is it provides an accuracy between 2 to 5 % a normally open electrical to. Accessing the site owner may have set restrictions that prevent you from accessing the site owner may set! Rate of expansion when heated the reverse set-up is used to deflect pointer! Third-Party cookies that help us analyze and understand how you use this site we will assume that you happy... When cooled traffic source, etc brass expands more than the other it gets a little cold and it! The coefficients of thermal expansion will bend more a pointer over a calibrated which! With a strip of bimetal comprises two metals like a and B at two kinds! Bend towards the other of bimetal comprises two metals are bonded what happens to a different extent when heated away! Be used in industrial what happens when a bimetallic strip is heated contains a bimetallic strip bends with the brass upon cooling steel... Respond to temperature change visit `` cookie Settings '' to provide a controlled consent object consists... The density of a helical like structure whose operation is similar to coiled. Objects condense and become smaller so density increases provide visitors with relevant ads and marketing.!