Table of Contents
- 1 Why does a bimetallic strip curve when it is heated or cooled?
- 2 What will happen to bimetallic strips when the temperature increases?
- 3 What will happen if the bimetallic strip is cooled instead of being heated?
- 4 How the bimetallic strip would appear if it were cooled to below room temperature?
- 5 When a bimetallic strip is cooled the strip will bend toward the side group of answer choices?
- 6 What happens when matter is cooled?
- 7 How does a bimetallic strip work in a refrigerator?
- 8 What happens when a bimetallic strip is heated?
- 9 What are the coefficients of linear expansion in bimetallic strip?
Why does a bimetallic strip curve when it is heated or cooled?
why are concrete sidewalds made in small sections rather than in one long continuous piece? why does a bimetallic strip curve when it is heated or cooled? BNecause of the difference in the amounts of expansion rates so one side becomes longer creating a curve.
What will happen to bimetallic strips when the temperature increases?
When the temperature rises, the strip will turn in the direction of metal with the lower temperature coefficient. When the temperature decreases, the strip bends in the direction of metal having a higher temperature coefficient.
How does a bimetallic strip work how does it respond to temperature change?
A bimetallic strip is made of two different kinds of metals that are laminated into one strip. Each metal responds to heat and cold by expanding a specific amount based on the change in temperature. When heat is applied to the coiled bimetallic strip, it expands and uncoils.
What will happen if the bimetallic strip is cooled instead of being heated?
When this bimetallic strip is heated, the brass expands more than the steel and the strip curves with the brass on the outside. If the strip is cooled, it curves with the steel on the outside. Bimetallic strips are used as switches in thermostats.
How the bimetallic strip would appear if it were cooled to below room temperature?
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.
What happens to the coil inside a thermostat when it is cooled?
As it cools, the refrigerant changes from a hot gas to a hot liquid. 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.
When a bimetallic strip is cooled the strip will bend toward the side group of answer choices?
The different expansions force the flat strip to bend one way if heated, and in the opposite direction if cooled below its initial temperature. The metal with the higher coefficient of thermal expansion is on the outer side of the curve when the strip is heated and on the inner side when cooled.
What happens when matter is cooled?
When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to drop.
What happens to materials when heated and cooled?
Heating a substance makes the molecules move faster. Cooling a substance makes the molecules move slower.
How does a bimetallic strip work in a refrigerator?
In a refrigerator, the reverse set-up is used. When the temperature inside the refrigerator rises, the bimetallic strip bends to switch on the compressor which starts the cooling cycle. When a resistance indicating a particular temperature is reached, the heating elements is switched on or off.
What happens when a bimetallic strip is heated?
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. What happens when a bimetallic strip made of iron and brass is heated?
Why are bimetallic strips used in thermostats?
The bimetallic strips are commonly used in thermostats. It is because the temperature change will bring the mechanical displacement in the metal. 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.
What are the coefficients of linear expansion in bimetallic strip?
For example, for brass and steel, the coefficients of linear expansion are: Brass: 19 x 10-6/°C Steel: 11 x 10-6/°C When this bimetallic strip is heated, the brass expands more than the steel and the strip curves with the brass on the outside. If the strip is cooled, it curves with the steel on the outside.