• 2021-04-14
    电路如图 4 所示,电流 I 为 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/48dcfd6292e44a329c2d5b04973679d8.png
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      图7所示电路,若已知电流I=1A ,则 Uab= (     )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/51368429af7741c8a3acecb0e789389d.png

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      已知电路如图4所示,若输入信号ui为正弦波,则输出波形为http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/5b65bf8bacef4037b33fdb27bb9a1fe9.png

    • 2

      放大电路如图9所示,  RF的反馈类型是(   )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/a7749521401a464cb60fcd5a83682f6a.png

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      图8所示电路,若输入电压 ui 为系列方波如图8 所示,则输出电压uo的波形为 ( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/94dea7d0655b4096b94631bca6f6993e.png

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      图 5 所示电路, 容性器件的复阻抗,可表示为: (     )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/746323023f3f4444b347fc0a6264a537.png