Why the transformers and tube lights emit humming sound?

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Hello, Science enthusiasts, today I am going to explain you about the sound from electrical equipment. We know about the transformers and the tube lights. These are some apparatus which we can’t leave without it in our daily life.

Generally, we see the transformers in our localities and tube light in our houses. when we are passing them we may hear some humming types of sound. These sounds are not of the birds at that place. This sound is emitted by the transformers itself.

If we carefully observe them we can hear the humming sound I mean transformers sound emitted by them. This sound is emitted by both transformers also by tube light. It is also done by the tube lights in our houses. If you do not hear this sound still know check out the video at the bottom of this article.

This will become a noise objects when these instruments are used in the silence areas. As we know that the sound which is not audible to hear is called as ‘Noise‘. Now let’s learn why the transformers and tube light will emit the humming sound I mean transformers sound. why do the transformers sound and tubelights sound

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Here’s the reason why the transformers sound emitted:

We know that the transformer works on the Faraday’s law of electromagnetic induction, the sound is emitted due to the winding the transformer and the inductors in the choke of the tube light. The inductor is a coil which is made up of conductors.

Here the sound emitted because of the Magnetostriction is a property of ferromagnetic materials that causes them to change their shape or dimensions during the process of magnetization and mechanical vibrations caused by the lamination, depending upon the tight fitting of the assembled structural parts.

These are the main reasons for emitting sound. Nowadays we need things which are not Repetitive, irrelevant and inappropriate. So, by the assumption of these conditions the new changes were designed in the transformers. Arranging sound insulating materials like oil barrier and cushion padding’s etc… And the tight fitting of the parts of the transformer.

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Here is the video of a 60 Hz, 300 KVA transformer which is emitting the humming sound.

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