The Frequency of Voltage Generated in an 8-Pole Alternator

What is the frequency of voltage generated in an 8-pole alternator running at 900 rpm?

Is it a) 50 Hz, b) 60 Hz, c) 120 Hz, or d) 100 Hz?

Answer:

The frequency of voltage generated in an 8-pole alternator running at 900 rpm is 60 Hz (b).

The frequency of voltage generated in an 8-pole alternator running at 900 rpm is determined by the formula:

Frequency (Hz) = (Number of Poles * RPM) / 120

In this case, with 8 poles and 900 rpm, the calculation is as follows:

Frequency = (8 * 900) / 120

Frequency = 7200 / 120

Frequency = 60 Hz

Therefore, the correct answer is 60 Hz (b).

The frequency of voltage refers to the number of cycles per second that the alternating current alternates in an electrical circuit. In the case of an 8-pole alternator running at 900 rpm, the number of poles and the speed of rotation (RPM) are utilized to determine the frequency of the generated voltage, which in this case is 60 Hz.

It's worth noting that the frequency of voltage generated in an alternator is directly related to the number of poles and the rotational speed. Higher RPM or more poles will result in a higher frequency, with 60 Hz being a commonly used standard frequency in electrical systems globally.

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