What happens to frequency if speed is doubled in an alternator operation?

In an alternator, frequency is fundamentally related to the speed of the rotating magnetic field and the number of poles within the generator. The frequency of the output AC voltage is calculated using the formula:

[ \text{Frequency (Hz)} = \frac{N \times \text{Speed (RPM)}}{120} ]

Where ( N ) is the number of poles and RPM is the speed of the alternator. If the speed of the alternator is doubled, the speed component in this formula effectively doubles, which subsequently leads to a doubling of the frequency produced. Therefore, with all else remaining constant, if the speed of rotation is increased, the frequency of the electrical output will also increase proportionally.

This principle illustrates the direct relationship between speed and frequency in alternator operation, confirming that if the speed is doubled, the frequency indeed becomes doubled as well.