电路如图所示，设DZ1的稳定电压为9V，DZ2的稳定电压为12V，设稳压管的正向压降为 0.7V，则输出电压UO等于（）。 -题库考试答案搜索网

电路如图所示，设DZ1的稳定电压为9V，DZ2的稳定电压为12V，设稳压管的正向压降为 0.7V，则输出电压UO等于（）。

单选题

2021-07-17 23:23

A、<span style="font-size: 14px;">21V</span>
B、<span style="font-size: 14px;">9.7V</span>
C、<span style="font-size: 14px;">30V</span>
D、<span style="font-size: 14px;">2.7V</span>

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正确答案

B

试题解析

标签：电力系统自动化技术高起专模拟电子技术 2020年第二学期期末考试期末考试

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