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Why does a metallic piece become very hot when it is surrounded by a coil carrying high frequency alternating current?
This is because of the eddy curents produced due to the changing electric and magnetic fields.
Is hot-rolled steel magnetic?
Yes, hot-rolled steel is magnetic. A few types of steel have limited magnetic properties, but hot rolling is a process by which steel is prepared in a shape for marketing. The hot rolling does not affect the ability of the steel to be attracted to a magnet.
What is grain flow in forge component?
Grain flow is a typical grain pattern generated during forging of metal. When a piece of metal is cold or hot forged by applying external force or pressure, then metal starts deforming normal to the direction of application of pressure. During the process of permanent deformation, metal grains get deformed & generate what is known as" flow lines ". This is called Grain Flow. It can be seen by chemically etching cross sectional piece of forge metal shown fig below.
What is a hot rolled thread?
It's a thread that's been formed by rolling the piece while hot between two dies.
Why schottky is called hot carrier diode?
Because the energy of electrons transfer from semiconductor to metal side have more energy than the fermi energy of electrons in metal side. That's why these are called hot carrier diodes
What will happen when a hot piece of metal is attached to cold piece of metal?
Thermal energy will move from the hot to the cold until their temperatures are identical.
What do you think will happen when a hot piece of metal is attached to cold piece of metal?
When a hot piece of metal is attached to a cold piece of metal, heat will transfer from the hot metal to the cold metal until they reach thermal equilibrium. The hot metal will cool down while the cold metal will heat up until they both settle at a common temperature.
What happens when one piece of metal is melted?
It becomes hot liquid.
What is pyro-engraved?
Its usually done with a hot iron, (a very hot piece of metal to burn the object)
What contains a small piece of metal that bends when it gets hot?
A thermostat contains a small piece of metal called a bimetallic strip that bends when it gets hot, allowing it to regulate temperature by opening or closing a circuit.
If two similar pieces of metal are heated one to red hot and the other just hot are plunged into water why does the hotter piece cool the quickest?
metal
What do you think will happen when a hot piece of metal is attached to cold piece do metal?
It will get translucent and will be equal hot and cold will make it equal if you think it is a good idea give me a like down below please I need to get 100 likes
Can a magnet attract to a refrigerator if the magnet is hot?
If it is a magnet, then it can still attract to a refrigerator. If it is a lump of hot metal or hot ceramic, then only gravity will provide attraction. The curie temperature describes when it goes from being a magnet to being a lump.
How can a hot metal produce electricity?
When a hot metal is placed in a magnetic field, its electrons start moving due to thermal energy, creating an electric current. This phenomenon is known as thermoelectric effect, where temperature difference across the metal creates voltage and generates electricity.
What do you think will happen when a hot piece of metal is attached to cold of metal?
It will get translucent and will be equal hot and cold will make it equal if you think it is a good idea give me a like down below please I need to get 100 likes
What will happen energetically to a cup of boiling hot water that is added to a cup containing a cold piece of metal?
choices are: The cold will flow from the metal into the hot water, causing the hot water to warm up and the metal to cool down. b. The energy from the hot water will flow into the cold metal, cooling the water down and heating up the metal. c. The cold will flow from the metal into the hot water, causing the hot water to cool down and the metal to warm up. d. The metal will cool down because the specific heat of water is high.
If you use a hacksaw to cut a piece of metal why do they both become hot?
due to heat generated by friction of two metallic surfaces
