50Hz
The bulb in the frequency of AC mains by electrically vibrating rod acts as a visual indicator of the frequency of the vibrations produced by the rod. As the rod vibrates at the frequency of the AC mains, the bulb will flicker or light up in synchronization with the vibrations, providing a way to visually observe the frequency.
In the sonometer experiment, a transformer is used to step down the AC mains voltage to a safer, lower voltage suitable for use with the sonometer's vibrating strings. This allows the experimenter to generate a controlled frequency that can be easily matched with the frequency of the AC mains. By adjusting the tension or length of the strings, the resonance condition can be achieved, enabling the determination of the frequency of the AC supply. The transformer thus plays a crucial role in ensuring safety and accuracy in the experiment.
The standard household AC electrical power mains voltage in Greece is 230 volts, with a frequency of 50 Hz.
The mains voltage is 230 volts, and the frequency is 50Hz.
-- 60 Hz mains in North America, Latin America, a few other places -- 50 Hz mains in Europe, Asia, most other places -- Anything at all, from DC to daylight, depending on the application, in non-mains circuits
It depends on the rectifier. For a half-wave, it's the same as the AC mains: i.e. 60 Hz mains gives 60 Hz ripple. For a full-wave or a bridge, it's twice the AC mains: 60 Hz mains gives 120 Hz ripple. Three-phase systems are more complicated, so you would need to check in an electrical engineering book.
It depends on the rectifier. For a half-wave, it's the same as the AC mains: i.e. 60 Hz mains gives 60 Hz ripple. For a full-wave or a bridge, it's twice the AC mains: 60 Hz mains gives 120 Hz ripple. Three-phase systems are more complicated, so you would need to check in an electrical engineering book.
A cycloconverter or a cycloinverter converts an AC waveform, such as the mains supply, to another AC waveform of a lower frequency, synthesizing the output waveform from segments of the AC supply without an intermediate direct-current link.
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The mains supply in Scotland is 50Hz.
The mains voltage in Cyprus is 230 volts at a frequency of 50 Hz.