Explanation:
A transformer is an electrical device that transfers electrical energy from one circuit to another circuit without any physical connection between them. The core of a transformer is an important component that plays a vital role in the functioning of a transformer. The core is made up of laminated sheets of iron or steel. The core is laminated to reduce the energy losses due to eddy currents.

Energy losses due to eddy currents:
When an alternating current flows through a conductor, it generates a magnetic field around it. The magnetic field induces eddy currents in the core of a transformer. These eddy currents create heat, which leads to energy losses. The energy losses due to eddy currents can be reduced by laminating the core.

Laminating the core:
Laminating the core reduces the energy losses due to eddy currents. The laminated core creates a barrier between the layers, and thus, the eddy currents are reduced. The laminated core also reduces the hysteresis loss, which is the energy lost due to the magnetization and demagnetization of the core. The laminated core also reduces the noise produced by the transformer.

Other advantages of laminating the core:
Apart from reducing the energy losses due to eddy currents, laminating the core has several other advantages such as:

- The laminated core reduces the magnetic flux leakage, which means that more energy is transferred from the primary winding to the secondary winding.
- The laminated core reduces the size and weight of the transformer.
- The laminated core reduces the cost of the transformer.

Conclusion:
Laminating the core is an important aspect of transformer design. It reduces the energy losses due to eddy currents and has several other advantages. The laminated core is an essential component of a transformer that ensures its efficient and effective functioning.

The core of the transformer is laminated to reduce energy loss due to eddy currents because induction is reduced by laminating.