What are the significance of gas insulated substation?
By Nitesh yadav, Posted on 22/02/2021 - 0 Comments
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Electric motors rely on electromagnets to produce the force required to drive an electrical machine or machinery. The operation of an electric motor depends on three basic principles. Firstly, an electric current produces a magnetic field. Secondly, the direction of a current in an electromagnet determines the location of the magnet’s poles and lastly, magnetic poles attract or repel each other. When an electric current passes through a wire it produces an electric field around the wire. If the wire is wound in a coil around a metal rod, the magnetic field around the wire becomes strong and the rod becomes magnetized. This arrangement of rod and wire coil is a simple electromagnet, with two ends as the north and south poles. Like poles, such as two north poles, repel each other. Unlike poles attract each other. If a bar magnet is suspended between the ends of a horseshoe magnet, it will rotate until its north pole is opposite the horseshoe magnet’s south pole. The south pole of the bar magnet will be opposite the horseshoe magnet's north pole. (FULL ANSWER)