Capa do livro de Utility Frequency
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Utility Frequency

Betascript Publishing (2013-07-15 )

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The line frequency (American English) or mains frequency (British English) is the frequency at which alternating current (AC) is transmitted from a power plant to the end user. In most parts of the world this is 50 Hz, although in the Americas it is typically 60 Hz. Precise details are shown in the list of countries with mains power plugs, voltages and frequencies. During the development of commercial electric power systems in the late 19th and early 20th centuries, many different frequencies (and voltages) had been used. Large investment in equipment at one frequency made standardization a slow process. However, as of the turn of the 21st century, places that now use the 50 Hz frequency tend to use 220-240 V, and those that now use 60 Hz tend to use 100-120 V. Both frequencies co-exist today (some countries such as Japan use both) with no technical reason to prefer one over the other and no apparent desire for complete worldwide standardization.
Betascript Publishing
Editado por:
Lambert M. Surhone, Mariam T. Tennoe, Susan F. Henssonow
Número de páginas:
Publicado em:
Informática, IT
49.00 €
Palavras chave:
Frequency, Alternating Current, Power Station, End-user, Hertz, Mains Power Around the World, Transformer, Rotary Converter, Direct Current

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