Advantages and disadvantages of electromagnet
Answers
Answer:
Advantages
One advantage to using an electromagnetic energy source is that, depending upon the electromechanical device used, you don’t need an external electrical source to generate electrical power. One example of this is an alternating-current (AC) generator. When rotational mechanical energy turns a coil inside of the generator, it exposes that coil to changes in magnetic field. Those changes induce the production of alternating current voltage – voltage where the current changes directions with a certain frequency – between the two output ends of the coil. Since no other energy is required other than the mechanical motion of the rotating coil, this type of device can be advantageous in situations where there is a ready source of mechanical energy, such as a steam or gas turbine, or a diesel or gasoline engine.
Disadvantages
Electromagnetic power sources may not be as useful, or can perhaps be dangerous to use, under certain circumstances. For instance, if you need to have a power source that must have a regulated current output, both AC and DC power generators would need to be run at a non-varying speed. Further, while a DC power generator produces electrical current that flows in one direction, the electrical current is irregular. To regulate the current produced by a DC generator, you would need additional electrical equipment, such as a battery, a capacitor and an inductor, as well as electronic components called diodes to ensure that the current stays within a regulated range.
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