问题详情

、某三相电源的电动势分别为 V , e B =20sin(314 t - 104 ° ) , ,当 t =13s 时,该三相电动势之和为 ( ) 。


A、<span style=";font-family:Calibri;font-size:13px">20V</span></p><p></p>

B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/ueditor/jsp/upload/image/20161102/1478065442272078078_blob.png" title="39532249340107005" alt="blob.png"/>

C、<span style=";font-family:Calibri;font-size:13px">0V</span></p><p></p>

时间:2021-07-17 20:17 关键词:

答案解析

C