The dynamo core is laminated because:

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(D) The core of a dynamo (or transformer) is laminated to reduce the production of eddy currents. When a magnetic flux changes through a solid metalli

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Loss of energy in the core due to eddy currents decreases

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(D) The core of a dynamo (or transformer) is laminated to reduce the production of eddy currents. When a magnetic flux changes through a solid metallic core,large induced currents called eddy currents are produced,which cause significant energy loss in the form of heat. By using thin,insulated metal sheets (lamination),the path for these eddy currents is broken,thereby increasing the resistance and significantly reducing the energy loss due to eddy currents.

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