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Electric motors and electric generators can have permanent magnets or electromagnets. It depends on the design. For example electric generators can be dynamos, alternators, or rotary converters. However, in General Electric motors are electromagnetic so that resistance disappears when current is cut and electric generators have permanent magnets.
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Why are electromagnets used in generators?
My only guess is that ,,, because electromagnets are more stronger and powerful than the ordinary magnets. Moreover they provide continuous magnetic field required for the generator. the generator in your car will have an electromagnet in the field the field will set the charge rate new cars have an alternator the field is the electromagnet in the rotor older cars have a true generator where the field is in the stator
Why electromagnet is different from a permanent magnet because an electromagnet what?
Mainly in that the electromagnet is NOT permanent. In other words, it can be switched on and off.Another relevant difference is that the electromagnet constantly requires power, at least while it is on.
What produces electricity by spinning a magnet in a coil of wire?
A generator or alternator. If the magnetic field is permanent, the current produced from the coil will be alternating current. AC. Alternators usually work the other way round. The magnet is spun inside a coil of wire. The power is taken off from the stator. The rotor is an electromagnet, fed via slip rings on the shaft. The strength of the magnet can be varied and controlled externally, to control the output voltage.
How do you turn off an electromagnet?
This is what makes a magnet an electromagnet - the ability to turn it on and off... Anyway, electromagnets can be turned off with either the help of a switch, or just by disconnecting the power supply.
Can you give me a sentence with the word generator?
A generator is a device that creates energy, or transforms it from one form into another. Here are some sentences.I bought a generator in case the electricity goes out.The generator in the dam was strong enough to power the whole city.That machine is a generator.
What is a generator made of?
an electromagnet
What is generator made of?
an electromagnet
How is a generator and a electromagnet alike?
Both a generator and an electromagnet involve the use of coils of wire with an electric current flowing through them. In a generator, the motion of the coil creates an electric current, while in an electromagnet, the electric current produces a magnetic field.
What does an electromagnet do in a generator?
in a generator electromagnets are used for producing flux for rotor to cut so it can produce current in small generator they will have residual magnetism and in big generator current is supplied to electromagnet from another small dc generator
How is the role of an electromagnet in a motor different from the role of an electromagnet in an generator?
I thinkit is different because a motor changes eletricalenergryinto motion a generator changesa motion into eletericalenergy.
Generator consisting of a coil that rotates between the poles of an electromagnet?
dynamo
Can cadmium phosphorus and cobalt with copper and zinc become a power generator in an electromagnet?
no
What is field winding?
The field winding on a generator is the winding that is electrified to create an electromagnet; it is generally the winding found on the rotor (the rotating part of the generator).
What describes the role of an electromagnet in a generator?
Its role is to change mechanical energy into electrical energy.
How electromagnets are used in real world?
Every electric motor and generator uses an electromagnet.
What is the device that uses electromagnet induction to convert mechanical energy into electrical energy?
Generator
What best describes the role of an electromagnet in a generator?
Its role is to change mechanical energy into electrical energy.
