PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoThe materials attracted by a magnet can be magnetised to permanent magnets by the process of magnetisation.
Exposing a piece of iron or a substance to a magnetic field and converting it into a permanent or temporary magnet is magnetisation. Artificial magnets are produced by this method.
Magnetic materials are classified as magnetically hard or soft materials based on magnetisation.
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Soft magnetic materials:
If a material can be easily magnetised, then it is a magnetically soft material. For example, iron is a soft magnetic material.
Example:
These materials are used in various appliances in daily life.
Transformer
Generator
Electric motor
Hard magnetic materials:
Magnetically hard materials require a strong magnetic field to be magnetised due to their atomic structure. This is because different materials have different atomic structures and behave differently in a magnetic field. An example of magnetic hard materials is Alnico.
Example:
Earphones
Computer peripherals
Automobiles
Reference:
https://upload.wikimedia.org/wikipedia/commons/f/f4/DC_Motor.jpg
https://p1.pxfuel.com/preview/828/8/21/hockenheim-switchyard-transformer-relay.jpg
https://upload.wikimedia.org/wikipedia/commons/5/55/Geely_assembly_line_in_Beilun%2C_Ningbo.JPG
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