The core of any transformer is laminated so as to

Options

A. The ratio of the voltage in the secondary to that in the primary may be increased
B. Energy losses due to eddy currents may be minimised
C. The weight of the transformer may be reduced
D. Rusting of the core may be prevented

Answer

**Step-by-Step Solution:**

1. **Understanding the Transformer Core:**
- A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. The core of the transformer plays a crucial role in this process.

2. **What is Lamination?**
- Lamination refers to the construction of the core using thin sheets of metal instead of a solid block. These sheets are insulated from each other.

3. **Purpose of Lamination:**
- The primary purpose of laminating the core is to reduce the eddy currents that can form within the core material. Eddy currents are loops of electric current that are induced within conductors by a changing magnetic field.

4. **Eddy Currents and Their Effects:**
- When a magnetic field is applied to the core, it can induce these currents, which flow in circular paths within the core material. This results in energy losses in the form of heat, which is undesirable in transformers.

5. **How Lamination Reduces Eddy Currents:**
- By using thin sheets, the path for the eddy currents is interrupted. Since the sheets are insulated from each other, the size of the loops that the eddy currents can form is reduced, thereby minimizing their magnitude and the associated energy losses.

6. **Conclusion:**
- Therefore, the core of any transformer is laminated to minimize energy losses due to eddy currents.

**Final Answer:**
The core of any transformer is laminated to minimize energy losses due to eddy currents.

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