| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | transformer | electrical engineering | Transformers are essential for voltage regulation and power distribution in electrical systems, making them fundamental to electrical engineering. | 4 |
| 2 | transformer | Germany | Transformers are commonly used in electrical power distribution systems in Germany. | 1 |
| 3 | transformer | Rural areas in developing countries | Transformers are less commonly used in rural areas in developing countries with limited access to electricity infrastructure. | 1 |