mst-dq-A.html
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<div class="mst_title">
<div class="st_title">电气工程师笔试考核试题（A卷）</div>
<p style="text-align: center"><span>总分：100分</span> <span style="padding-left: 20px">闭卷：75分钟</span></p>
<div class="row" style="padding: 0 15%">
<div class="col-lg-4 col-md-4"><span style="color:red">*</span>姓名：<input id="userName" type="text" class="tm_input" placeholder="必填项" required readonly></div>
<div class="col-lg-4 col-md-4">专业：<input id="paperType" type="text" class="tm_input" placeholder="请填写专业" readonly></div>
<div class="col-lg-4 col-md-4"><span style="color:red">*</span>电话：
<input id="userPhone" type="text" class="tm_input" placeholder="必填项" name="No" readonly>
<!--<p style="font-size:14px;color: red;">格式错误</p>-->
</div>
</div>
</div>
<div class="mst-dt">
<h2 class="tm_title">一、电气基础类（16*2=32分）</h2>
<p style="padding-left: 25px">
1. 万用表常用于测量电压、<input name="answer" type="text" class="hx_input" id="" style="width: 120px">、<input name="answer" type="text" class="hx_input" style="width: 120px">；
</p>
<p style="padding-left: 25px">
2. 电气设备调试前，必须进行上电前检查，主要包括检查<input name="answer" type="text" class="hx_input" style="width: 120px">、<input name="answer" type="text" class="hx_input" style="width: 120px">、<input name="answer" type="text" class="hx_input" style="width: 120px">、<input name="answer" type="text" class="hx_input" style="width: 120px">；
</p>
<p style="padding-left: 25px">
3. 数字量反馈型接近开关或光电开关通常有<input name="answer" type="text" class="hx_input" style="width: 120px">、<input name="answer" type="text" class="hx_input" style="width: 120px">2种输出方式；
</p>
<p style="padding-left: 25px">
4. 根据编码器使用方式，一般分为绝对值型编码器、<input name="answer" type="text" class="hx_input" style="width: 120px">；
</p>
<p style="padding-left: 25px">
5. 电气行业规定 安全电压为不高于<input name="answer" type="text" class="hx_input" style="width: 120px">V，持续接触安全电压为24V，安全电流为<input name="answer" type="text" class="hx_input" style="width: 120px">mA；
</p>
<p style="padding-left: 25px">
6. 西门子、三菱、倍福等主流工控品牌各自常用的通讯协议分别是：<input name="answer" type="text" class="hx_input" style="width: 120px">、<input name="answer" type="text" class="hx_input" style="width: 120px">、<input name="answer" type="text" class="hx_input" style="width: 120px">;
</p>
<p style="padding-left: 25px">
7. PLC控制伺服或者步进系统，常用的方式是通过总线协议、<input name="answer" type="text" class="hx_input" style="width: 120px">；
</p>
<p style="padding-left: 25px">
8. 为减少外部电网波动对控制柜内设备的冲击，通常在控制柜电源进线端增加<input name="answer" type="text" class="hx_input" style="width: 120px">；
</p>
<h2 class="tm_title">二、电气计算类（18分）</h2>
<p style="padding-left: 25px;" class="pc_hg">
已知设备视在功率为50KVA，试计算有功功率（5分）？计算该设备电源需要多少A的断路器进行安全保护（8分）？电源线需要多大的线径（5分）？请详细列出计算公式及计算过程。<br/>
</p>
<div style="padding:0 25px;">
<div>
<textarea name="answer" rows="6" class="form-control2" placeholder="在此输入文字内容"></textarea>
</div>
<div class="upload-content">
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<div class="modal-dialog modal-lg" role="document">
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</div>
</div>
</div>
</div>
<h2 class="tm_title">三、电气绘图类（20分）</h2>
<p style="padding-left: 25px;" class="pc_hg">
1.已知电机功率5.5KW，通过按钮控制电机正反转的电气原理图；（可在CAD或者EPLAN中绘制，也可手工绘制）<br/>
1)、功能要求如下：按下电机正转按钮，电机正转，松开停止；按下电机反转按钮，电机反转，松开停止；同时按下正反转按钮，电机不动作；<br/>
2)、绘图要求如下：需注明元器件型号和品牌，电气符号，充分考虑电气安全性，线号、线径等标注清楚；<br/>
</p>
<div style="padding:0 25px;">
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<textarea name="answer" rows="6" class="form-control2" placeholder="在此输入文字内容"></textarea>
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</div>
<h2 class="tm_title">四、上机测试类（30分）</h2>
<p style="padding-left: 25px;" class="pc_hg">
1.已知V90伺服电机，通过工艺轴对象控制方式，进行组态，并编写伺服电机走任意绝对位置程序。<br/>
</p>
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<h1 class="qr_title">确认提示</h1>
<p><i class="fa fa-3x fa-question-circle text-info pull-left"></i> <span style="position: relative;">再次确认是否交卷？仔细核对姓名和电话号码是否正确，交卷后将不能继续答题！</span></p>
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