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Which direction does bimetallic strip bend toward higher or lower coefficient of expansion?
Wiki User
∙ 15y ago
Lower
Wiki User
∙ 15y ago
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Would a bimetallic strip work if the two different metals happened to have the same rates of expansion?
The one with the higher coefficient of thermal expansion.
When a bimetallic bar made of copper and iron strips is heated the bar bends toward the iron strip. The reason for this is?
The copper has a higher thermal expansion coefficient than the iron. The copper wants to get longer relative to the iron so the bar bends away from the iron strip. For example if iron is on top and copper on the bottom the bar bows downward. This seems opposite to your question conclusion
Does the coefficient of linear expansion depend upon length describe?
The coefficient of linear expansion DOES not depend on the length. Each material has a certain value for its coeeficient of linear expansion. The length of the material dictates how much it will expand linearly for a given rise in temperature. L" = L'(1 + a x (T'' - T')) That is the length at temperature T'' which is higher than temperature T' is given by the length L' at temperature T' multiplied by the quantity [1 + a x (T" - T')], where a is the coefficient of linear expansion which is constant for a given material. Thus if the temperature difference T" - T' is large then the expansion will be large which means L" - L' will be large. Likewise if the original length L' is large, then the corresponding expanded length L" will be large
What value of the coefficient of friction the greater the resistance to sliding?
higher
The the value of the coefficient of friction the greater the resistance to sliding.?
higher
Would a bimetallic strip work if the two different metals happened to have the same rates of expansion?
The one with the higher coefficient of thermal expansion.
What happens when the Bimetallic Strip cools down?
When the bimetallic strip cools down, the metals in the strip contract at different rates due to their varying coefficients of thermal expansion. This differential contraction causes the strip to bend, with the side of the metal with higher expansion coefficient (usually the inner layer) being on the inside of the curve.
What is a device that converts thermal energy to mechanical energy?
a) A turbine powered by steam; b) a mechanic device made of two metal strips in contact (brass and iron, for example). Brass has a higher coefficient of expansion than iron. When the temperature changes, the bimetallic strip will bend up or down, depending on the direction of temperature change, doing useful, hopefully, mechanic work. Examples are fire alarms or thermometers. c) a thermocouple will convert heat directly to electricity, and hence mechanical work via an electromagnet. d) a Hot air balloon may fill the bill, but in an intermittent action. (As is the bimetallic). or just a "heat engine"
When a bimetallic bar made of copper and iron strips is heated the bar bends toward the iron strip. The reason for this is?
The copper has a higher thermal expansion coefficient than the iron. The copper wants to get longer relative to the iron so the bar bends away from the iron strip. For example if iron is on top and copper on the bottom the bar bows downward. This seems opposite to your question conclusion
Why can a jammed metal lid of a jam jar be opened by heating?
When you heat the jar, the glass expands only slightly while the metal expands much more. This is governed by the coefficient of expansion for the substance. The greater the coefficient of expansion, the more the substance expands. Since metal generally has a much higher coefficient of expansion, the lid of the jar will get bigger while the jar only expands slightly. That makes everything a little looser, which makes it much easier to open the jar.
Does the coefficient of linear expansion depend upon length describe?
The coefficient of linear expansion DOES not depend on the length. Each material has a certain value for its coeeficient of linear expansion. The length of the material dictates how much it will expand linearly for a given rise in temperature. L" = L'(1 + a x (T'' - T')) That is the length at temperature T'' which is higher than temperature T' is given by the length L' at temperature T' multiplied by the quantity [1 + a x (T" - T')], where a is the coefficient of linear expansion which is constant for a given material. Thus if the temperature difference T" - T' is large then the expansion will be large which means L" - L' will be large. Likewise if the original length L' is large, then the corresponding expanded length L" will be large
What is the interpretation of yule s coefficient of association?
Yule's coefficient of association measures the strength and direction of association between two binary variables. It ranges from -1 to +1, with higher values indicating a stronger association. A coefficient of 0 suggests no association between the variables.
What combination of metals cannot be used in bi-metallic strips?
bankbet99: The concept of bimetal editing this paragraph Bimetallic sheet is a composite material composed of two or more metals or other materials with suitable properties. content The bimetal is also called a thermal bimetal. Due to the different thermal expansion coefficients of each component layer, when the temperature changes, the deformation of the active layer is greater than that of the passive layer, so the whole bimetal will bend to the passive layer side. , Then the curvature of this composite material changes, resulting in deformation. Among them, the higher coefficient of expansion is called the active layer; the lower coefficient of expansion is called the passive layer. However, with the expansion of bimetallic applications and the advancement of combining technology, three-layer, four-layer, and five-layer bimetal have appeared in modern times. In fact, all composite materials that change in shape depending on temperature changes are still called thermal bimetals. organization The material of the active layer is mainly manganese-nickel-copper alloy, nickel-chromium-iron alloy, nickel-manganese-iron alloy and nickel, etc.; the material of the passive layer is mainly nickel-iron alloy with a nickel content of 34-50%. use Bimetallic strips are widely used in relays, switches, controllers, etc. The starter of a fluorescent lamp is a good example. In addition, a thermometer can be made of bimetallic strips, which can measure higher temperatures.
The lower the phenol coefficient is the stronger the disinfectant is?
No,, the higher the phenol coefficient the stronger the disinfectant
What 2 things determine the friction between to objects?
Friction between two objects depends on the static coefficient of friction (if the object is currently not moving) and the normal force from the surface, acting in the direction opposite the direction of gravity.
Why does the bimetallic strip take the curved shape?
A bi-metallic strip is made of two different metals. (Duh!) Each metal has its OWN coefficient of thermal expansion, so when it heats up, one side expands more than the other does. The side that expands more causes the strip to bend toward the side that expands less.
How do you know the expansivity of a bimetallic strip?
You can test the bimetallic strip's expansivity by placing it in a hot or cold environment, such as a refrigerator or a Bunsen burner. The strip that contracts or expands more has a higher expansivity than the other.
