用有效值相量来表示正弦电压u = 380 sin(314 t-9000b000a0) V 时可写作U=( 00a0 00a0)
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- 用有效值相量来表示正弦电压u = 380 sin(314 t-90° ) V 时可写作U=(
- 中国大学MOOC: 用有效值相量来表示正弦电压u = 380sin(314 t-90°)V时可写作http://edu-image.nosdn.127.net/_PhotoUploadUtils_d13646fc-7a01-4145-84a7-45e64cfd9d2b.png=
- 已知正弦交流电压u=141sin( 314t-60 0 )V,则其电压的有效值相量为
- 用幅值(最大值)相量表示正弦电压u=220sin(wt-90°)V时,可写作
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