20春学期《现代电力电子及变流技术》在线平时作业1

adminhan

<span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体; mso-bidi-font-weight: bold"><span style="mso-spacerun: yes">&nbsp;</span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">功率晶体管三个电极分别为</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">(<span style="mso-tab-count: 4">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>)</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">。</span>
A:<p style="TEXT-ALIGN: left; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 62.95pt; mso-list: l0 level1 lfo1; tab-stops: list 62.95pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">发射极，基极，集电极；</span><span style="FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></p>
B:<p style="TEXT-ALIGN: left; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 62.95pt; mso-list: l0 level1 lfo1; tab-stops: list 62.95pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第一基极，发射极，第二基极；</span><span style="FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></p>
C:<p style="TEXT-ALIGN: left; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 62.95pt; mso-list: l0 level1 lfo1; tab-stops: list 62.95pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">源极，栅极，漏极；</span><span style="FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></p>
D:<p style="TEXT-ALIGN: left; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 62.95pt; mso-list: l0 level1 lfo1; tab-stops: list 62.95pt" class="MsoNormal" align="left"><span style="FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'" lang="EN-US"><span style="mso-list: Ignore"><font face="Times New Roman"><span style="FONT: 7pt &quot;Times New Roman&quot;">&nbsp;</span></font></span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">阴极，门极，阳极。</span><span style="FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></p>

&nbsp;晶闸管的额定电压是（<span>&nbsp;&nbsp; </span>）。
A:<div align="left"><div align="left"><span><span>&nbsp;</span></span>断态重复峰值电压</div></div>
B:<div align="left">反向重复峰值电压</div>
C:<div align="left"><span><span>&nbsp;&nbsp;</span></span>A和B中较大者</div>
D:<div align="left"><span>&nbsp;</span>A和B中较小者</div>

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">三相桥式全控整流电路，晶闸管的电流平均值是（</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp; </span><span style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; </span><span style="mso-spacerun: yes">&nbsp;</span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">）。</span>
A:<p><img width="17" height="26" alt="" src="http://file.open.com.cn/ItemDB/108014/187a344d-16dc-4efd-8f29-c66a5902861c/201221215101221.png" /></p>
B:<img width="22" height="29" alt="" src="http://file.open.com.cn/ItemDB/108014/187a344d-16dc-4efd-8f29-c66a5902861c/2012212151028849.png" />
C:<img width="18" height="33" alt="" src="http://file.open.com.cn/ItemDB/108014/187a344d-16dc-4efd-8f29-c66a5902861c/2012212151039912.png" />
D:<img width="18" height="32" alt="" src="http://file.open.com.cn/ItemDB/108014/187a344d-16dc-4efd-8f29-c66a5902861c/201221215112819.png" />

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">三相半波可控整流电路，晶闸管的电流平均值是（</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp; </span><span style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; </span><span style="mso-spacerun: yes">&nbsp;</span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">）。</span>
A:<img width="22" height="29" alt="" src="http://file.open.com.cn/ItemDB/108014/1cc2a112-3853-4a91-9acd-d14975c93112/201221215813813.png" />
B:<img width="18" height="33" alt="" src="http://file.open.com.cn/ItemDB/108014/1cc2a112-3853-4a91-9acd-d14975c93112/201221215835751.png" />
C:<img width="17" height="26" alt="" src="http://file.open.com.cn/ItemDB/108014/1cc2a112-3853-4a91-9acd-d14975c93112/201221215846689.png" />
D:<img width="20" height="31" alt="" src="http://file.open.com.cn/ItemDB/108014/1cc2a112-3853-4a91-9acd-d14975c93112/201221215859909.png" />

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">场效应管三个电极分别为</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">(<span style="mso-tab-count: 4">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>)</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">。</span>
A:<p style="TEXT-ALIGN: left; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 62.95pt; mso-list: l0 level1 lfo1; tab-stops: list 62.95pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">发射极，基极，集电极；</span><span style="FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></p>
B:<p style="TEXT-ALIGN: left; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 62.95pt; mso-list: l0 level1 lfo1; tab-stops: list 62.95pt" class="MsoNormal" align="left"><span style="FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'" lang="EN-US"><span style="mso-list: Ignore"><font face="Times New Roman"><span style="FONT: 7pt &quot;Times New Roman&quot;">&nbsp;</span></font></span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第一基极，发射极，第二基极；</span><span style="FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></p>
C:<p style="TEXT-ALIGN: left; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 62.95pt; mso-list: l0 level1 lfo1; tab-stops: list 62.95pt" class="MsoNormal" align="left"><span style="FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'" lang="EN-US"><span style="mso-list: Ignore"><font face="Times New Roman"><span style="FONT: 7pt &quot;Times New Roman&quot;">&nbsp;</span></font></span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">源极，栅极，漏极；</span><span style="FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></p>
D:<p style="TEXT-ALIGN: left; TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 62.95pt; mso-list: l0 level1 lfo1; tab-stops: list 62.95pt" class="MsoNormal" align="left"><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">阴极，门极，阳极。</span><span style="FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></p>

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">三相半波可控整流电路一共有（</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">）只晶闸管。</span>
A:1
B:2
C:3
D:4

<font size="2">晶闸管的额定电流是以（<span>&nbsp;&nbsp; </span>）的形式定义的。</font>
A:<div align="left"><font size="2">电流峰值</font></div>
B:<div align="left"><font size="2">电流有效值</font></div>
C:<div align="left"><font size="2">电流平均值</font></div>
D:<p><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><font size="2">电流瞬时值</font></span></p>

晶闸管是（ <span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>）。
A:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><font size="2">四层三端器件</font></span>
B:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><font size="2">三层四端器件</font></span>
C:<p><font size="2"><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">四个</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">PN</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">结的器件</span></font></p>
D:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><font size="2">电压驱动型器件</font></span>

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">单相交流调压电路可以用于</span>
A:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">电阻性负载</span>
B:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">电感性负载</span>
C:<span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体"><span style="mso-spacerun: yes">&nbsp;</span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">电阻性负载和电感性负载</span>
D:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">单相负载</span>

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">三相交</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">-</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">交变频电路主要有两种接线方式。</span>
A:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">三相三线制方式和三相四线制方式</span>
B:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">高阻方式和低阻方式</span>
C:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">串联方式和并联方式</span>
D:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">公共交流母线进线方式和输出星形联结方式</span>

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">三相桥式全控整流电路，晶闸管承受的最大正反向电压是变压器二次相电压的峰值。</span>
A:错误
B:正确

<p style="TEXT-INDENT: 20.6pt; MARGIN: 0cm 0cm 0pt" class="MsoNormal"><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">考虑变压器漏抗造成的<span style="mso-bidi-font-weight: bold">换相重叠角</span></span><em><span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><font face="Times New Roman">&gamma;</font></span></em><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-bidi-font-style: italic">时</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，<span style="mso-bidi-font-weight: bold">三相全控桥式电路输出的逆变电压</span>平均值比不考虑变压器漏抗时减小。</span><span style="FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></p>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">同步调制是在改变</span><em style="mso-bidi-font-style: normal"><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">f</span></em>_{<span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">r</span>}<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">的同时成正比的改变</span><em style="mso-bidi-font-style: normal"><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">f</span></em>_{<span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">c</span>}<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">，使载波比</span><em style="mso-bidi-font-style: normal"><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">N</span></em><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">等于常数。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">电压型交</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">-</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">直</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">-</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">交变频器中间滤波环节采用大电感滤波。</span>
A:错误
B:正确

<span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">P-MOSFET</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">栅偏压大于零时，漏源极之间才存在导电沟道的称为耗尽型。</span>
A:错误
B:正确

<span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体"><span style="mso-spacerun: yes">&nbsp;</span><span lang="EN-US">IGBT</span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">是电压控制型器件。</span>
A:错误
B:正确

<span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体"><span style="mso-spacerun: yes">&nbsp;</span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">升</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;,&quot;serif&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">-</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">降压式直流斩波器，输入电流不连续，输出电流不连续。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">晶闸管交流调功器一般采用相位控制实现调功。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">三相共阳极整流电路，整流管总在三相相电压波形负半周的自然换相点换流。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">交流调压电路的主要作用是把一种频率的交流电转化为另一种频率的交流电。</span>
A:错误
B:正确