The mechanical speed of magnetic fields can be related to the electrical frequency and pole number by the formula
The mechanical speed of magnetic fields can be related to the electrical frequency and pole number by the formula:
- ηm = 120 * fe * P
- ηm = 120 * fe / P
- ηm = fe * P / 120
- ηm = 120 * P / fe
Correct answer: 2. ηm = 120 * fe / P