Iron Core Of Power Transformer Is Laminated To Reduce

A magnetic core is a piece of magnetic material with a high magnetic permeability used to confine and guide magnetic fields in electrical electromechanical and magnetic devices such as electromagnets transformers electric motors generators inductors magnetic recording heads and magnetic assemblies it is made of ferromagnetic metal such as iron or ferrimagnetic compounds such as ferrites. The core of the transformers needs to be laminated to reduce the eddy current that has arisen from the induced voltages through the core reducing the heat loss of the whole core which is why the core of the transformers is laminated to restrict the eddy currents flowing through it. In all types of transformer construction the central iron core is constructed from of a highly permeable material made from thin silicon steel laminations.

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3 3 2 Transformers

Power factors of both the transformers will be same.

Iron core of power transformer is laminated to reduce.

But a solid iron core has some own disadvantage due to to some losses. A transformer core is laminated to a reduce hysteresis loss b reduce eddy current losses c reduce copper losses d reduce all above losses. The iron core would provide the magnetic lines with a place. In devices like transformers the core is made up of laminations of iron.

Ie the core is made up of thin sheets of steel each lamination being insulated from others. One way to reduce these unwanted power losses is to construct the transformer core from thin steel laminations. Question is a transformer core is laminated to options are a reduce hysteresis loss b reduce eddy current losses c reduce copper losses d reduce all above losses e leave your comments or download question paper. The percentage of nickel is adjusted to give a reduced energy loss when the core is magnetised by the magnetic field produced when the primary winding is energised.

The purpose of providing an iron core in a transformer is to. In order to reduce the eddy current loss the resistance of the core should be increased. The core is laminated to reduce these to a minimum as they interfere with the efficient transfer of energy from the primary coil to the secondary one. The eddy currents cause energy to be lost from the transformer as they heat up the core meaning that electrical energy is being wasted as unwanted heat energy.

In other words low reluctance should be retained. The iron core transformer has higher permeability thus it is applied in transformer in place of air core in modern transformer. The core of a laminated transformer consists of a stack of punched sheet alloy made of iron and nickel the laminations. Provide support to windings.

Thin laminated iron core is stacked up to form the complete core. Thus to reduce the losses solid core is not used in transformer.