Which type of loses do not occur in transformer :

Options

A. mechanical
B. copper losses
C. hysteresis losses
D. eddy current losses

Answer

To answer the question "Which type of losses do not occur in a transformer?", we need to analyze the different types of losses that are typically associated with transformers.

### Step-by-Step Solution:

1. **Understanding Transformer Losses**:
- Transformers experience various types of losses during operation. The main losses include:
- **Copper Loss**: This occurs due to the resistance in the copper windings when current flows through them.
- **Hysteresis Loss**: This is due to the magnetization and demagnetization of the core material, which generates heat.
- **Eddy Current Loss**: This occurs due to induced currents in the core material when the magnetic field changes, leading to energy loss in the form of heat.
- **Humming Loss**: This is caused by magnetostriction in the core material, which produces sound and results in energy loss.
- **Flux Leakage**: This occurs when some of the magnetic flux does not link with the secondary winding, leading to power loss.

2. **Identifying Non-Existent Losses**:
- Among the losses mentioned, we need to identify which type does not occur in transformers.
- **Mechanical Loss**: This type of loss is associated with moving parts and friction, which is not applicable to transformers as they do not have moving mechanical components.

3. **Conclusion**:
- Therefore, the type of loss that does not occur in transformers is **Mechanical Loss**.

### Final Answer:
**Mechanical losses do not occur in transformers.**

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