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Why are electromagnets used instead of permanent magnets for a motor?
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How does the electromagnet train work?
Popularly called MegLev there are two different modes of operation. When the train is still at the station it can be held by magnets. In motion electromagnets are like an electric motor that has been flattened out. The stator on the ground ( the tracks ) and the rotor being the train. The train is confined with magnets and electromagnets. The linear motor can be in the train, "the tracks" or both. Preferable would be a combination with the tracks pushing and levitating the train along with permanent magnets. The train with balancing magnets and electromagnets to keep it in the track and going. There is a way of putting the magnets together with their fields at right angles to each other. This puts the magnetic force on one side.
What part of an electric motor repels the poles of the permanent magnets?
commutator
How is Law of electric charge related to electric motor?
An electric motor is made up of magnets .. some electric induced magnets , some permanent magnets . the electric magnets are arranged so that when the power is turned on they activate in a series of pulsing magnets.. this pulsing causes the magnets in the core and the magnets in the body of the motor to repel and attract as magnets will do .. this repelling and attracting causes the magnets to try and chase each other around .. this action is turning the core of the motor and producing the rotating action expected from an electric motor
5 appliances that have magnets or electromagnets in them?
Every appliance that has a motor in it uses electromagnets. The only appliance that I can think of right now that does not use electromagnets in it is a toaster and a bus. I WANT A COOKIEAND A TOASTER
Does a vacuum cleaner need a magnet to work?
Some kind of magnet or magnetic field is necessary for a motor to operate. Alternating current vacuum cleaners (that plug into the wall) have motors with electromagnets. Direct current vacuum cleaners (that plug into the car's cigarette lighter socket) have motors with permanent magnets.
How are both permanent magnets and electromagnets used in a motor?
They both are strong and are made of iron and steel.
What is used instead of field coils in an electric motor?
permanent magnets
Does an electric egg beater contain magnets?
Yes, an electric egg beater will have some kind of magnets in it. These may be permanent magnets, or may be electromagnets, but the motor in the appliance will have to have some kind of magnets in it to operate on electricity.
Is a refrigerator an example of a permanet magnet or magnetic material?
A refrigerator is not a magnet, however it does contain an electric motor, and within that motor are permanent magnets (as well as electromagnets).
Why electromagnets over permanent magnets for a large dc machine?
The flux density of an electromagnet can be easily controlled. It's also easy and cheap to produce a large flux density with an electromagnet which is necessary for such large dc motors. Permanent magnets are generally expensive. For such a large motor,a very large permanent magnet will be needed for that motor which will not be ideal.AnswerElectromagnets are more powerful than temporary magnets, and -as pointed out above- their flux density can be controlled.
What are the uses of magnets and electromagnets daily?
induction motor (in washer for example), compass, speaker
Does a washing machine motor have permanent magnets?
no
Witch part of an electic motor repels the poles of the permanent magnets?
The part of an electric motor that repels the poles of the permanent magnets is the fly wheel.
How does the electromagnet train work?
Popularly called MegLev there are two different modes of operation. When the train is still at the station it can be held by magnets. In motion electromagnets are like an electric motor that has been flattened out. The stator on the ground ( the tracks ) and the rotor being the train. The train is confined with magnets and electromagnets. The linear motor can be in the train, "the tracks" or both. Preferable would be a combination with the tracks pushing and levitating the train along with permanent magnets. The train with balancing magnets and electromagnets to keep it in the track and going. There is a way of putting the magnets together with their fields at right angles to each other. This puts the magnetic force on one side.
How do hoovers use magnets?
We find permanent magnets or electromagnets in the motors of vacuum cleaners, so, yes, vacuum cleaners use magnets. The type of magnet depends on the type of motor the machine has.
What part of an electric motor repels the pole of the permanent magnets?
commutator
What part of an electric motor repels poles of the permanent magnets?
commutator
