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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.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agohow a bimetallic strip works in an electric iron and how to make an electric iron circuit
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What is a bimetallic coin?
A bimetallic strip is often used in thermostats because it is quite simple to make and responds predictably to changes in temperature. The bimetallic strip is pretty much what it sounds like - a strip made from two metals. Inthermostatsit is common to make one side out of steel and the other out of copper - then bond them together. they are formed into a curving spiral. Different metals have different coefficients of thermal expansion so as the temperature changes, the spiral strip either curls up or uncurls as one side expands or contracts more than the other. The control isattachedto one end of the strip so that as it curls or uncurls, it rotates the control.Sometimes the control is a simple mercury switch that closes a contact whenrotatedone way and opens the contact when rotated the other. Sometimes one end is attached to a power source and the other end is connected to an electric contact, which moves as the strip curls and uncurls.You can also attach it to a pointer and have it point to temperatures on a dial.
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
Is using AC and ceiling fans together a good idea?
Answer Absolutely! This way your air circulates better and will cause the air conditioner to work less. Make sure that they your electricity can handle so much use on one circuit, otherwise you may blow that circuit.
What is different about the two kinds of metal on the bimetallic strip of a thermostat coil?
the two dissimillar metals have different heat coefficient.on the application of heat the two mtels which are comonly bonded in shape of spiral or helix expands unevenly.that's results in diferential expansion that's unwind the expansion this differential expansion is sensed by the pointer and the differentail exapansion of the metal is shown in terms of pointer deflection on the scale as measured value............. the two dissimillar metals have different heat coefficient.on the application of heat the two mtels which are comonly bonded in shape of spiral or helix expands unevenly.that's results in diferential expansion that's unwind the expansion this differential expansion is sensed by the pointer and the differentail exapansion of the metal is shown in terms of pointer deflection on the scale as measured value.............
Ideas for a elementary 4th grade science fair projects?
For a fourth grader, you can do a standard baking soda/ vinegar volcano or something like using alcohol to show the colors a black marker is made up of. You could also look on line to try to make a battery out of a fruit or make a small circuit
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.
Why do you use a bimetallic strip in fire alarms?
Bimetalic strips are composed of two metals with different properties in the case of fire alarms it is the difference in thermal expansion that is important. When the strip is heated (due to a fire) the strip bend and can complete an electric circuit setting off the alarm.
How a bimetallic strip and a bell can be used to make fire alarm?
It can be used to make a fire alarm by attaching it to another metal object i.e a nail and and adding a buzzer and some batteries and heating a busin burner underneath the bimetallic strip. This will make the strip curl upwards and touch the nail. This will make the buzzer go off
How can a bimetallic strip and a bell be used to make a fire alarm?
It can be used to make a fire alarm by attaching it to another metal object i.e a nail and and adding a buzzer and some batteries and heating a busin burner underneath the bimetallic strip. This will make the strip curl upwards and touch the nail. This will make the buzzer go off
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.
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.
Why are two different metals needed when making a bimetallic strip for a thermoteter?
because the strip has to go inside the thermometer so it needs to metals just to make it go inside the thermometer :) #loving my life :)
Why doesn't the bimetallic strip on frying pan control work?
What happens is one of two things:The mechanical components stickThe strip has one layer of metal corrode or flake off.It is the two different expansion rates of the metal that make the strip work.
A sentence using the word circuit?
try to make a path of circuit
How do you make a circuit using a limon?
That is impossible.
What is a bimetallic coin?
A bimetallic strip is often used in thermostats because it is quite simple to make and responds predictably to changes in temperature. The bimetallic strip is pretty much what it sounds like - a strip made from two metals. Inthermostatsit is common to make one side out of steel and the other out of copper - then bond them together. they are formed into a curving spiral. Different metals have different coefficients of thermal expansion so as the temperature changes, the spiral strip either curls up or uncurls as one side expands or contracts more than the other. The control isattachedto one end of the strip so that as it curls or uncurls, it rotates the control.Sometimes the control is a simple mercury switch that closes a contact whenrotatedone way and opens the contact when rotated the other. Sometimes one end is attached to a power source and the other end is connected to an electric contact, which moves as the strip curls and uncurls.You can also attach it to a pointer and have it point to temperatures on a dial.
How can you make a circuit close at a set delay time?
try using a 555 circuit
