Answer :

Final answer:

The frequency of pulsating DC from a generator has no direct equivalent to the frequency of an AC generator, as DC does not inherently alternate. For pulsating DC, any frequency would stem from the conversion process from its initial AC form.

Explanation:

The frequency of the pulsating DC output voltage of a generator is fundamentally different from that of an AC generator. In the AC generation, the frequency is determined by the rotational speed of the turbine shaft. This rotational speed is adjusted by the balance of energy delivery to the turbine blades and the electrical energy demand from the generator. For AC generators, like those in hydro-electric dams, the desired frequency (usually 50Hz or 60Hz) is regulated by controlling the turbine speed. On the other hand, DC generation typically involves the conversion of an AC electromotive force (emf) to a pulsed or smoothed DC output. As a result, a DC generator itself does not have a frequency like an AC generator, since direct current flows steadily without alternating. However, if you consider the pulsation in a non-smoothed DC output, the pulsating frequency can be related to the AC frequency from which it was converted.

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