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permanent magnets and wound stators (temporary magnets) can be used inthe generators and motors.
in small size generators (eg: dynamo in cycle),permanent magnets are used because,
1 it does not require electricity to magnetise
2 does not require stator cooling
but in larger size generators and motors, temporary magnets are prefered because,
1 it is small in size of same power permanent magnets
2 we can control the stator magnetic field by adjusting the power
3 the magnetic flux density per square cm is more
etc..
What else can I help you with?
What are the advantages and disadvantages of electromagnetism?
an electromagnet requires electricity and you will have to pay for it. permanent magnets are always on and you can change the strength of it.
What are the advantages and disadvantage's of an electromagnet?
an electromagnet requires electricity and you will have to pay for it. permanent magnets are always on and you can change the strength of it.
What types of magnets are harder to magnetize but retain magnetism much longer?
permanent magnets
Are paperclips permanent magnets?
No, paperclips are not permanent magnets. They can temporarily exhibit magnetic properties when in the presence of a magnetic field, but they do not retain magnetism like permanent magnets do.
Are electromagnetic magnets permanent?
No, electromagnets are not permanent.
What are the differences between electromagnets and permanent magnets, and how do electromagnets differ from permanent magnets?
Electromagnets and permanent magnets differ in how they are created and their magnetic properties. Electromagnets are temporary magnets created by passing an electric current through a coil of wire, while permanent magnets are naturally occurring magnets with a fixed magnetic field. Electromagnets can be turned on and off by controlling the electric current, while permanent magnets always have a magnetic field.
What are the disadvantges of eletromagnets?
Some disadvantages of electromagnets include the need for a continuous supply of electricity to maintain magnetism, limited strength compared to permanent magnets, and the potential for overheating if too much current is applied. Additionally, electromagnets can be more complex to design and control compared to permanent magnets.
What type of magnets are harder to magnets but retains magnetism much longer?
permanent magnets
A permanent magnet can affect?
A permanent magnet can affect magnets and electromagnets.
advantages and disadvantages of equity?
Advantages and Disadvantages of equity
Where can I find permanent magnets?
Permanent magnets can be found in stores that sell hardware or industrial supplies, as well as online retailers. Specialized magnet stores or suppliers may also carry a wide variety of permanent magnets for different uses.
Does water effect permanent magnets?
not really. is depends on what kind of magnets they are.
