Noise generated from electric motor are mainly due to cooling air movement , bearing noise, magnetic noise due to cyclic variation of magnetic forces. Mounting the silencers on ventilation intake & outlet opening reduces the noise considerably. Larger capacity motors tend to emanate noise from the casing due to magnetic forces which may require acoustic hood. Acoustics India Private Limited designed , manufactured and delivered electric motor silencers in the capacity of range of 600 KW to 4500 KW