成考院校在线答案
- 2022-09-12 [判断] <p class="MsoNormal">8、<span style="mso-spacerun:'yes'; font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">在对称Y—Y三相电路归结为一相的计算电路中，连接中点N—N</span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">’</span><span style="mso-spacerun:'yes'; font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">的是短路线，与中线阻抗ZN无关。</span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">1、<span style="mso-spacerun:'yes'; font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">对称三相负载作星形连接时，线电流等于相电流，线电压等于相电压。</span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">18、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">串联谐振电路不仅广泛应用于电子技术中，也广泛应用于电力系统中。<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-font-kerning: 0pt">( ) <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">11、<span style="font-size:12.0pt;font-family:黑体">用拉普拉斯变换求解线性动态电路时，单位冲激函数<span lang="EN-US"> <!--[if gte vml 1]><v:shape id="图片_x0020_383" o:spid="_x0000_i1050" type="#_x0000_t75" alt="&pky723276167&" style='width:21.75pt; height:11.25pt'> <v:fill o:detectmouseclick="t"></v:fill> <v:imagedata src="DLYL26.files/image045.png" o:title="&pky723276167&"></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="29" height="15" alt="&pky723276167&" v:shapes="图片_x0020_383" src="http://wljy.whut.edu.cn:80/uploadfiles/word/DLYL26.files/image046.png"> <!--[endif]--></span>的拉普拉斯变换式为<span lang="EN-US">S</span>。<span lang="EN-US"> <o:p></o:p></span></span></p> <p class="MsoNormal" style="mso-pagination:widow-orphan"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-font-kerning:0pt">(<span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span>) <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">10、<span style="mso-spacerun:'yes'; font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">具有磁耦合的电感电路中，当互感起“削弱”作用时，两个耦合电感是反向串联连接的电路。</span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">15、<span style="mso-spacerun:'yes'; font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">已知三个电源为</span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="189" height="87" src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx02.files/dlylx02907.png"></span><span style="mso-spacerun:'yes'; font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">它们可以组成一组对称三相电源。</span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">16、<span style="font-size:12.0pt;font-family:黑体">用拉普拉斯变换求解线性动态电路时，在电容的复频域串联电路模型中，<span lang="EN-US"> <!--[if gte vml 1]><v:shape id="图片_x0020_319" o:spid="_x0000_i1044" type="#_x0000_t75" alt="&pky723276167&" style='width:19.5pt; height:27.75pt'> <v:fill o:detectmouseclick="t"></v:fill> <v:imagedata src="DLYL26.files/image036.png" o:title="&pky723276167&"></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="26" height="37" alt="&pky723276167&" v:shapes="图片_x0020_319" src="http://wljy.whut.edu.cn:80/uploadfiles/word/DLYL26.files/image037.png"> <!--[endif]--></span>两端的电压一定与原电路中电容两端电压<span lang="EN-US"> <!--[if gte vml 1]><v:shape id="图片_x0020_320" o:spid="_x0000_i1045" type="#_x0000_t75" alt="&pky723276167&" style='width:27pt;height:15.75pt'> <v:fill o:detectmouseclick="t"></v:fill> <v:imagedata src="DLYL26.files/image038.png" o:title="&pky723276167&"></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="36" height="21" alt="&pky723276167&" v:shapes="图片_x0020_320" src="http://wljy.whut.edu.cn:80/uploadfiles/word/DLYL26.files/image039.png"> <!--[endif]--></span>相等。<span lang="EN-US"> <o:p></o:p></span></span></p> <p class="MsoNormal" style="mso-pagination:widow-orphan"><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-font-kerning:0pt">( <span style="mso-spacerun:yes"> </span>) <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">5、<span style="font-family:黑体">并</span><span style="mso-bidi-font-size:10.5pt; font-family:黑体">联电路的总电压超前电流时，电路一定呈感性。<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-font-kerning:0pt">(<span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span>) <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">2、<span style="mso-spacerun:'yes'; font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">当网络函数</span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="38" height="22" src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx06.files/dlylx063804.png"></span>确定后，该网络的零状态响应<span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="34" height="22" src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx06.files/dlylx063840.png"></span>为<span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="122" height="22" src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx06.files/dlylx063864.png"></span>。<span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">7、<span style="mso-spacerun:'yes'; font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">用拉普拉斯变换求解线性动态电路时，在电容的复频域串联电路模型中，</span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="26" height="42" src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx04.files/dlylx042837.png"></span>两端的电压一定与原电路中电容两端电压<span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="36" height="24" src="http://wljy.whut.edu.cn//uploadfiles/word/dlylx04.files/dlylx042878.png"></span>相等。<span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "> <o:p></o:p></span></p>