电工电子技术（云南开放大学）第2学期形考作业3
电工电子技术第2学期形考作业31.[单选题] 纯净半导体中掺入五价元素后成为（ ）
A.本征半导体
B.N型半导体
C.P型半导体
答:——B——
2.[单选题] 电感元件两端的电压与（ ）成正比。
A.电流的瞬时值
B.电流的平均值
C.电流的变化率
答:——C——
3.[单选题] 电子实验室测量电子技术实验电路中的电压时，用的是（ ）
A.万用表的电压档
B.交流电压表
C.电子毫伏表
答:——C——
4.[单选题] 具有直接复位端 <img src="http://file.open.com.cn/ueditorupload/image/2019/12/03/6371098051295292212464029.png" title="1575354762(1).png" alt="1575354762(1).png">和置位端<img src="http://file.open.com.cn/ueditorupload/image/2019/12/03/6371098051801736393586214.png" title="1575354769(1).png" alt="1575354769(1).png">的触发器，CP作用时两个端子应为（ ）<br><br>
A.<img src="http://file.open.com.cn/ueditorupload/image/2019/12/03/6371098052478512261153296.png" title="1575354762(1).png" alt="1575354762(1).png"><img src="http://file.open.com.cn/ueditorupload/image/2019/12/03/6371098052872333329659691.png" title="1575354769(1).png" alt="1575354769(1).png">=11
B.<img src="http://file.open.com.cn/ueditorupload/image/2019/12/03/6371098053960846789140313.png" title="1575354762(1).png" alt="1575354762(1).png"><img src="http://file.open.com.cn/ueditorupload/image/2019/12/03/6371098054225065487314848.png" title="1575354769(1).png" alt="1575354769(1).png">=00
C.<img src="http://file.open.com.cn/ueditorupload/image/2019/12/03/6371098054912925634352663.png" title="1575354762(1).png" alt="1575354762(1).png"><img src="http://file.open.com.cn/ueditorupload/image/2019/12/03/6371098055111441952432580.png" title="1575354769(1).png" alt="1575354769(1).png">=10
答:————
5.[单选题] 共发射极放大电路的反馈元件是（ ）。
A.电阻<img class="kfformula" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFEAAAAtCAYAAADWb4eMAAADd0lEQVRoQ+3ZW+ilUxjH8c8QSckhbkaNmgw3TqFJaSRFycUMOYwcLlA0TYQbktGQQxlknGMmk0OUEG6cLkyjmFDkQowbDUNIQ87HnnreetvtPS7etf5v/1qr9s1eaz37fb7vbz2HtRdoYzCBBYMtNAMaxAIiaBAbxAIECphoSmwQCxAoYKIpsUEsQKCAiabEBrEAgQImmhLnMcQ9cBaOxzk4BK9iM/7GPjgUP2Ej3sU/BfytYmJsJe6Ne3EeTsM7PS/j2QLyffn9Dfi5CoWBRseGuBBPpQ8X4KsJf+L5rsZduAwbBvpbZfvYEE/Aa3gWV+GXKV4G3CfxIK7Fb1VIDDA6NsTL8TCuwT0z/Agl3p3z1+GPAf5W2TomxD1xRx7XiIevT/EwEswDWIEz8WYVCgONjgmxi4cBaiW2TfEl4D6HWzMu/jXQ3yrbx4R4HF7G25k0dk5k5lNwOzbhMfxehUABo2NCvDgBRR34RM+Xw3Ey3s/MvWMXfh6GMxCx8lG8kWuX4hjcho8LcNqlibEg9uPhcryUT7kbluTR/SbhfPs/EE7CCzgdW3Pt7rgJy3ARttcEORbEA1N9B+NcfDLhZCjpxTzGa7OLmcUhMvz5CGV/0VsUpdFDU4r44jzHgnhUJowPp8TDcDKOdNSOXyNgfD/D871StdH5rO51NF2RHi8olPhZcXITAbym/Vm2o817BqGy+Pw7sfDULMIjocwqwmPLQXgab2UG7+yEwiPORj8e3U7VrD6GEiNe3YLr0Y+HHcd+q7cm1856GZ2i40V07WOAvRkRS+/MS4yqQhkD4r4Z647G2fhowsNuPuauwCM5vwg/TEAJRUdWXpfxMF5QgP0O9+f6qgDD+BgQO/V8mvEqwPRH16VELLswFbY/VuWNzo+5OJ49MnCUQ/2kEt/HZcUluf/z2hTnCmIoZDH2y/rtgMy4HyBKmQD6Z8/ZI3FlJoqIa3HfGNk6Ek03OthxaRH99a+9uROxJTuhSFBVx1xBrOFEXNpGcno8j27/Ny7FjRku3qvx432b8xliFNmvZJEdrWM3jsiboeexvnZmHismDhVGHONjMw5GRxKZ+UvEXw5xPxnlTfTbc/aXwnxW4tCXUWx/g1gAZYPYIBYgUMBEU2KDWIBAARNNiQ1iAQIFTDQlNogFCBQw0ZTYIBYgUMBEU2IBiP8BkVeWLpM49KkAAAAASUVORK5CYII=" data-latex="{R}_{B}">
B.电阻<img class="kfformula" src="data:image/png;base64,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" data-latex="{R}_{E}">
C.电阻<img class="kfformula" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAFEAAAAtCAYAAADWb4eMAAADV0lEQVRoQ+3ZTahVZRTG8Z9FZUb0gQQmllQSDcogEYcZqIOCPsgUymggJNEH1qSQjBDJSUWIUfQBoWFBAykQM0IIghwYFRRS0Si0yIiypDItFqwdm8O5Otjvvtsr74HDhbvvfu5e//O8az3ve6apr84EpnVWqAIqxAImqBArxAIECkhUJ1aIBQgUkKhOrBALECggUZ1YIRYgUECiOnEKQzwLd2ABluNyvI+PcAzn4yocxuvYi+MF6u1FYmgnzsALWIGl+KRVZTxbQN6cv1+HP3qh0FF0aIiX4s2s4W4cGKknnm8tnsVqvNax3l5uHxriIuzG23gER8ZUGXC34UU8hj97IdFBdGiI9+MlPIrnJ6gjnPhcXn8cf3eot5dbh4R4Njblco1++MGYCmPAbMFtuB0f9kKho+iQEJt+GKBW4tsxtQTcd7Ax++I/Hevt5fYhId6A9/BxDo1fRybzTXgGb+BV/NULgQKiQ0K8NwFFDtzaquVq3Ih9ObkPnqTOc7AYy7Afv2Nuaj6Y/+PLAqwmlBgKYrsf3op38wnPwLxcuj8iBslPJwAQIT366i681XLrNRnSD+E+/Hw6QpyZTpmNu9JB7ToXYkcu46dzFzPKIRz7Sk737fi39QdnYgPi55N9T/ShnHhdDozPx/TDYBGAIjv+gMiJo046LyNPODfi0W9jnBbwvmuF+d7MOBTE2ObF8guXxbvtoih2SYbwGCjjQnjsu8OFd2LPBHRuxtf4pjd6KTwExGapPYF2P2xqbW/11ueybHM4N114JWI4nWzw9M1wkO+dL8heNz+d9MVIlc31cNkavJzXL8MvecIT++2vTpVt4BBObPphLLVVCabNsdmlxLV7sqddhAfyRGdW9svomZEjx71icE3H973bkElzYizhK3AhrsfFOXE/RUSZAHq0VfC1eDiPvuKcMaJMTOsYNM1OJw4uxkEMYwTwCPGfnU4QS9YSGTPiyyWIMD16xhgZ8Zbsm5OyTRxiOZcA2oTpp3KKN5rh9mgDcWx2opBe4hn+15iqEKOAOXgI4bb4WiEAxqTeOdn77KkMsaibuohViF3oDRi2Czz2qSVRnVjg86gQK8QCBApIVCdWiAUIFJCoTqwQCxAoIFGdWCEWIFBAojqxAMT/AJe6ji49MzKqAAAAAElFTkSuQmCC" data-latex="{R}_{C}">
答:————
6.[单选题] 熔断器在电路中起过流保护，其控制图上标注的文字符号是（ ）
A.FU
B.KM
C.KM
答:————
7.[单选题] 已知两正弦量<img class="kfformula" src="data:image/png;base64,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" data-latex="{i}_{1}=10sin（314t+{90}^{0}）"> A，<img class="kfformula" src="data:image/png;base64,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" data-latex="{i}_{2}=10sin(628t+{30}^{0})">A，则（ ）<br><br>
A.<img class="kfformula" src="data:image/png;base64,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" data-latex="{i}_{1}">比<img class="kfformula" src="data:image/png;base64,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" data-latex="{i}_{2}">超前60°
B.<img class="kfformula" src="data:image/png;base64,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" data-latex="{i}_{1}">比<img class="kfformula" src="data:image/png;base64,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" data-latex="{i}_{2}">滞后60°
C.不能判断相位差
答:————
8.[单选题] 将电气设备的金属外壳接到电力系统的零线上，这种保护方式称为（ ）。
A.工作接地
B.保护接地
C.保护接零
答:————
9.[单选题] 基本放大电路中，经过晶体管中的信号（ ）。
A.只有直流成分
B.只有交流成分
C.交直流成分均有
答:————
10.[单选题] 能量转换过程不可逆的那部分功率通常称为（ ）
A.有功功率
B.无功功率
C.视在功率
答:————
11.[判断题] 三个最大值相同，角频率相等，相位上互差120o的正弦量称对称三相交流电。
A.对
B.错
答:————
12.[判断题] 电度表是测量电能的仪表。
A.对
B.错
答:————
13.[判断题] 电子线路测量电压时，可用万用表的电压档或交流电压表进行测量。
A.对
B.错
答:————
14.[判断题] 模拟电路传输的信号是连续的，数字电路传输的信号是离散的。
A.对
B.错
答:————
15.[判断题] 在照明电路的三相四线制中，中线是不可以省去的。
A.对
B.错
答:————
16.[判断题] 光电二极管和稳压二极管一样，也是工作在反向击穿区。
A.对
B.错
答:————
17.[判断题] 三相异步电动机的旋转方向，取决于通入定子绕组中三相电流的相序。
A.对
B.错
答:————
18.[判断题] 三相四线制电路有功功率的测量，负载不对称可以采用一表法进行测量。
A.对
B.错
答:————
19.[判断题] 可控RS触发器具有“置0、置1、保持和翻转”四种逻辑功能。
A.对
B.错
答:————
20.[判断题] 感性设备的功率因数较低，并联电容后可提高设备自身的功率因数。
A.对
B.错
答:————
21.<Fillup> 火线与火线之间的电压称为 ##电压，火线与零线之间的电压称为##电压。
答:————
22.<Fillup> 对称三相电源星联结的特点是 ##；三角形联接的特点是 ##。
答:————
23.<Fillup> 线性应用的集成运算放大器都是采用的 ##反馈。
答:————
24.<Fillup> 电流流经人体内部对内脏器官的伤害称为##。
答:————
25.<Fillup> 单相桥式整流电路输出电压的平均值与变压器二次绕组电压有效值之间的关系是##。
答:————
26.<Fillup> <img class="kfformula" src="data:image/png;base64,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" data-latex="{(27)}_{10}">＝（##）2＝（##）8＝（##）16。
答:————
27.<Fillup> ##的半导体称为本征半导体，掺入 ##的半导体称为掺杂半导体。
答:————
28.<Fillup> 根据转子结构的不同，三相异步电动机分有 ##式和##式两类。
答:————
29.<Fillup> 寄存器是由具有存储功能 ##的组合起来构成的，一个触发器可以存储##位二进制代码。
答:————
30.<Fillup> 已知正弦电压<img class="kfformula" src="data:image/png;base64,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" data-latex="u=220\sqrt {2}sin(314t-{60}^{。})V">，则它的最大值是 ##V，有效值<br>是 ##V，角频率是##rad/s，初相是##度。<br><br>
答:————
31.<ShortAnswer> 用“与非门”实现逻辑函数式<img src="http://file.open.com.cn/ueditorupload/image/2019/12/03/6371098225012142775369702.png" title="1575356639(1).png" alt="1575356639(1).png">，写出化简后有逻辑式，并画出逻辑电路图。<br><br>
答:————
32.<ShortAnswer> 电路如图所示。用叠加定理计算1Ω支路中的电流。<br><img src="http://file.open.com.cn/ueditorupload/image/2019/12/03/6371098205044353552996773.png" title="1575356443(1).png" alt="1575356443(1).png"><br><br>
答:————
33.<ShortAnswer> 判断如图所示电路的反馈类型．<br><img src="http://file.open.com.cn/ueditorupload/image/2019/12/03/6371098188127793506158988.png" title="1575356273(1).png" alt="1575356273(1).png">
答:————
34.<ShortAnswer> 化简下列逻辑表达式：<br><img src="http://file.open.com.cn/ueditorupload/image/2019/12/03/6371098193049862346402244.png" title="1575356322(1).png" alt="1575356322(1).png"><br><br>
答:————
35.<ShortAnswer> 什么是零点漂移？产生零点漂移的主要原因是什么？
答:————
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