成考院校在线答案
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">39、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">机电传动系统中<span class="GramE">低速轴</span>转矩大，高速轴转矩小。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">36、<span style="mso-bidi-font-size:10.5pt;font-family:华文宋体;color:#333333;mso-font-kerning: 0pt">同一电气元件的各部件必须画在一起，且其文字符号也要相同。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">29、<span style="mso-bidi-font-size:10.5pt;font-family:华文宋体;color:#333333;mso-font-kerning: 0pt">采用交流接触器、按钮等构成的鼠笼式异步电动机直接启动控制电路，为什么在合上电源开关后，电动机启动、停止控制都正常，但转向却是反的，这是因为引入电动机的电源相序错误。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">38、<span style="mso-bidi-font-size:10.5pt;font-family:华文宋体;color:#333333;mso-font-kerning: 0pt">电磁铁的主要作用是将电磁能量转换成机械能量，带动触头动作。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">36、<span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:华文宋体;color:#333333;mso-font-kerning: 0pt;mso-bidi-font-weight:bold">I/O</span><span style="mso-bidi-font-size: 10.5pt;font-family:华文宋体;color:#333333;mso-font-kerning:0pt;mso-bidi-font-weight: bold">点数是选择<span lang="EN-US">PLC</span>的重要依据之一。当系统的<span lang="EN-US">I/O</span>点数不够时，必须重新需用其他型号的<span lang="EN-US">PLC</span>。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">18、<span style="mso-bidi-font-size:10.5pt;font-family:Microsoft Yahei;mso-ascii-font-family:等线; mso-hansi-font-family:等线;color:#333333;mso-font-kerning:0pt">下列属于自动电器的是。</span><span lang="EN-US">_______</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">10、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">下列电器哪一种不是自动电器？</span><span lang="EN-US">_______</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">14、<span lang="EN-US">PLC</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">的</span><span lang="EN-US">I/O</span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">点数是指</span><span lang="EN-US">_______</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">15、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">设电动机某一转动方向的转速</span><i style="mso-bidi-font-style:normal"><span lang="EN-US">n</span></i><span style="font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">为正，则约定电动机转矩</span><span lang="EN-US">T<sub>M</sub></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">与</span><i style="mso-bidi-font-style:normal"><span lang="EN-US">n</span></i><span lang="EN-US">_________</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">的方向为</span><span lang="EN-US">______</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">9、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">能耗制动是在电动机脱离交流电源后，迅速给定子绕组通入</span><span lang="EN-US">_____<span style="mso-spacerun:yes"> </span></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">产生恒定磁场，利用转子感应电流与恒定磁场的相互作用达到制动的目的。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>