22秋西南交大《现代电力电子技术》在线作业二答案.pdf

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1、西南交现代电力电子技术在线作业二一、单选题（共10 道试题，共30 分。）1.输入相同的电压，三相桥式整流电路的输出电压是三相半波的（）.1 倍.2 倍.4 倍.二分之一正确答案：2.三相半波带电阻性负载时，为（）度时，可控整流输出的电压波形处于连续和断续的临界状态.0.60.30.120 正确答案：3.在晶闸管应用电路中，为了防止误触发，应将幅值限制在不触发区内的信号是（）.干扰信号.触发电压信号.触发电流信号.干扰信号和触发信号正确答案：4.单相半波可控整流电阻性负载电路中，控制角的最大移相范围是（）.90o.120o.150o.180o 正确答案：5.使 IGT开通的驱动电压一般为（）V

2、.0-5.5-10.10-15.15-20 正确答案：6.单相全控桥反电动势负载电路中,当控制角 大于不导电角 时,晶闸管的导通角=().-.+.-.+-正确答案：7.当晶闸管随反向阳极电压时，不论门极加何种极性触发电压，管子都将工作在（）.导通状态.关断状态.饱和状态.不定正确答案：8.电流型逆变器中间直流环节贮能元件是().电容.电感.蓄电池.电动机正确答案：9.下列器件中，属于电压控制型器件的是（）.电力场效应晶体管.达林顿晶体管.电力晶体管.绝缘栅极双极型晶体管正确答案：10.下列器件中，不属于全控型器件的有（）.功率二极管.IGT.IGT.GTO 正确答案：西南交现代电力电子技术在线

3、作业二二、多选题（共10 道试题，共40 分。）1.相控整流电路实现有源逆变的条件有（）.负载侧存在直流电势.直流电势的绝对值大于整流输出电压的绝对值.晶闸管触发角大于90 度.晶闸管触发角小于90 度正确答案：2.晶闸管具有以下哪三种极性？（）.阳极.阴极 K.门极 K.栅极 G 正确答案：3.以下描述中，哪几项不是电流型逆变器中间直流环节贮能元件？（）.电容.电感.蓄电池.电动机正确答案：4.下列元器件中，可控型有（）.普通晶闸管.整流二极管文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10

4、ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10

5、 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P1

6、0 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P

7、10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7

8、P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K

9、7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2

10、K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1.逆导晶闸管.大功率晶体管正确答案：5.下列关于功率二极管动态特性中描述正确的有（）.外加正向电压时，正向电流对结电容充电.外加电压反向时，正向电流立即截至下降至0.外加反向电压时，电流对结电容充电.外加电压反向，正向电流

11、不能立即降至0 正确答案：6.IGT具有以下哪三种极性？（）.门极 K.栅极 G.集电极.发射极 E 正确答案：7.关于 PWM 控制的特点下列描述正确的是（）.谐波分量少.同时调节输出电压与频率.开关次数低.动态响应好正确答案：8.变频电路可分为（）.交交变频.交直变频.交值交变频.直交变频正确答案：9.无源逆变电路可以输出（）.三角波.斜波.矩形波.脉宽调制波正确答案：10.晶闸管的换相重叠角与下列选项中的（）有关.触发角.变压器漏抗.平均电流.电源相电压正确答案：西南交现代电力电子技术在线作业二三、判断题（共30 道试题，共30 分。）1.SPWM 波形的生成方法主要有3 种，分别是自然

12、采样法、规则采样法、谐波消去法.错误.正确文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2

13、O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI

14、2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 H

15、I2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4

16、HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4

17、 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y

18、4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1正确答案：2.按照内部载流子类

19、型来分，IGT属于双极型电力电子器件.错误.正确正确答案：3.晶闸管的导通条件为承受正向电压并施加门极触发信号.错误.正确正确答案：4.在半控桥整流带大电感负载不加续流二极管电路中，电路出故障时会存在失控现象.错误.正确正确答案：5.三相半波可控整流电路又称为三相零式可控整流电路.错误.正确正确答案：6.对于输入接整流变压器的可控整流电路，变压器存在直流磁化的有三相半波整流电路，单相半波整流电路和单相双半波整流电路。.错误.正确正确答案：7.晶闸管在正向阳极电压的作用下，一旦门极加入适当的信号，就可使晶闸管由“断态”变为“通态”.错误.正确正确答案：8.IGT的开通特性与电力MOSFET完全不

20、同.错误.正确正确答案：9.达林顿复合管和电力晶体管属电流驱动型开关管；而电力场效应晶体管和绝缘栅型双极型晶体管则属于电压驱动型开关管。.错误.正确正确答案：10.在晶闸管的电流上升到其维护电流后，去掉门极触发符号，晶闸管仍能维持导通。.错误.正确正确答案：11.整流电路的功率因数为电网侧有功功率与视在功率之比.错误.正确正确答案：文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码

21、:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编

22、码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档

23、编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文

24、档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1

25、文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R

26、1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4

27、R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R112.单相桥式电路，反电动势负载，已知=60 度，u(2)=100V,E=50V,则电路处于待逆变状态。.错误.正确正确答案：13.晶闸管是一个三层(PNPN)三端(、K、G)器件.错误.正确正确答案：14.点阻性负载消耗电能，同时也能存储或放出电能.错误.正确正确答案：15.电流型逆变电路适合于谐波阻抗低、功率因数高的负载.错误.正确

28、正确答案：16.在三相交流调压电路中，至少有一相正向晶闸管与另一相反向晶闸管同时导通.错误.正确正确答案：17.IGT相比 MOSFET，其通态电阻较大，因而导通损耗也比较大。.错误.正确正确答案：18.直流斩波器属于隔离型直直变换器.错误.正确正确答案：19.IGT的开关速度高于功率场效应管.错误.正确正确答案：20.单相半控桥式整流电路能实现有源逆变电路.错误.正确正确答案：21.功率晶体管缓冲保护电路中的二极管要求采用快速恢复型二极管，一边与功率晶体管的开关时间相配合。.错误.正确正确答案：22.单极性 SPWM调制波比双极性SPWM 调制波的谐波分量要大些.错误.正确文档编码:CA1U

29、10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1

30、U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA

31、1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:C

32、A1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:

33、CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码

34、:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编

35、码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1正确答案：23.换相压降消耗有功功率.错误.正确正确答案：24.为了利于功率晶体管的关断，

36、驱动电流后沿应是一个较大的正电流。.错误.正确正确答案：25.相控交交变频电路的负载只能是阻性负载.错误.正确正确答案：26.直流斩波电路只能实现降低输出直流电压的作用.错误.正确正确答案：27.SPWM 波形的生成方法主要有3 种，分别是自然采样法，规则采样法，谐波消去法.错误.正确正确答案：28.电力开关管由于承受过电流，过电压的能力太差，所以其控制电路必须设有过流过压的保护电路。.错误.正确正确答案：29.在晶闸管导通的情况下，当主回路电流减小到接近于零时，晶闸管关断.错误.正确正确答案：30.带阻性负载的单相桥式全控整流电路中，触发角为0 时，功率因数也为0.错误.正确文档编码:CA1

37、U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA

38、1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:C

39、A1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:

40、CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码

41、:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编

42、码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1文档编码:CA1U10J7B1Y4 HI2O10C2K7P10 ZL8C7L8B4R1