Electrical Engineering XYZ
Thin laminations are used in electrical machines in order to reduce:
- Hysteresis losses
- Copper losses
- Both of these
- Eddy current losses
Correct answer: 4. Eddy current losses
Explanation: Eddy currents are circulating currents induced in the core material by the changing magnetic field. These currents create additional resistive heating in the core. Using thin laminations in the core reduces the eddy current losses by restricting the paths through which these currents can flow, thereby minimizing the resistance and heat generated.