天气预报 > 教育 > 交流电的三要素分别为
交流电的三要素分别为
更新时间: 2021-02-03 23:17:23  

1、交流电的三要素分别为幅值、频率和初相角。

2、交流电被广泛运用于电力的传输,因为在以往的技术条件下交流输电比直流输电更有效率。传输的电流在导线上的耗散功率可用焦耳定律(P =I 2R)求得,显然要降低能量损耗需要降低传输的电流或电线的电阻。

关键词: 交流电 要素 分别

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