Answer :

Final answer:

The output frequency of an AC generator is determined by the rotational speed of the turbine shaft and the number of turns in the coil and the strength of the magnetic field it rotates in.

Explanation:

The output frequency of an AC generator or alternator is determined by two key factors. Firstly, it depends on the rotational speed of the turbine shaft which can vary with the rate at which energy is delivered to the turbine blades by the working fluid versus the rate at which it is converted to electricity in the generator. Secondly, the number of turns in the generator's coil and the strength of the magnetic field through which the coil rotates also influence the output frequency. For example, if a hydroelectric dam uses water pressure to rotate a turbine, the speed of the turbine can be adjusted to achieve the desired frequency, which is 50Hz in most of the world and 60Hz in North America. Additionally, a square armature coil of an AC generator with a specific number of turns and dimensions rotating in a magnetic field will have a frequency determined by its rotation speed. For instance, if a coil with 200 turns and side length of 20.0 cm rotates at 3600 rpm, the output voltage has a specific frequency, influenced by these factors.The two factors determining the output frequency of an AC generator are the rotational speed of the turbine shaft and the power demand of the generator. When the turbine power exceeds the generator power demand, the frequency increases, and vice versa.

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Rewritten by : Barada