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已知一交流电流,当t=0时的i0=1A,初相位为30°,则这个交流电的有效值为()。
- A、0.5A
- B、1A
- C、1.414A
- D、2A
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更多 “已知一交流电流,当t=0时的i0=1A,初相位为30°,则这个交流电的有效值为()。A、0.5AB、1AC、1.414AD、2A” 相关考题
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