13:51
Allison
Electricity is a form of energy particularly flexible and adaptable. Can be converted into other forms of energy: heat, light, mechanical energy and in other ways: electromechanical, electronic, acoustic and visual techniques are based on modern telecommunications, information technology and entertainment.Electricity, as supplied to customers, has several features that may vary and affect their usefulness to users of the network. This standard describes the characteristics of the AC voltage electricity. Given the use made of electricity, it is desirable that this alternating voltage supplied at a constant frequency, according to a perfect sine wave and a constant amplitude. In practice this does not allow many factors. Unlike standard products,...
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