【判断题】【消耗次数:1】
IGBT是集成门极换向晶闸管。
正确
错误
参考答案:
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相关题目
【判断题】 当晶闸管承受正向电压时,门极触发电流在某个时间再次控制晶闸管触发导通。
①  正确
②  错误
【判断题】 晶闸管一旦开始导通,门极就失去控制作用。
①  正确
②  错误
【判断题】 门极可关断晶闸管(GTO)能够通过施加短期的门极脉冲电流而触发导通。
①  正确
②  错误
【单选题】 晶闸管导通必须具备两个条件:一是晶闸管阳极与阴极间接正向电压;二是门极与阴极之间也接正向电压。
① 
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【单选题】 直流电机中的换向极由( )组成。
①  换向极铁心
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③  换向器
④  换向极铁心和换向极绕组
【单选题】 直流电机换向极作用主要是_________。
①  增加电机气隙磁通
②  改善换向,减少换向时火花
③  没有换向极,就成为交流电机
【单选题】 直流电机换向极作用主要是?
①  A.增加电机气隙磁通
②  B.改善换向,减少换向时火花
③  C.没有换向极,就成为交流电机
④  D.稳定电枢电流
【判断题】 晶闸管的门极触发电流很小,一般只有几十毫安培到几百毫安培。
①  正确
②  错误
【单选题】 换向极极性与电枢反应磁势方向
①  相同
②  相反
③  两者都是
④  都不是
【单选题】 换向极绕组与电枢绕组如何联接?
①  串联
②  并联
③  两者都是
④  都不是
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【单选题】 InIndiamorethanonehundredlanguagesarespoken,______whichonlyfourteenarerecognizedasofficial.
①  of
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①  that
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①  For
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①  have to pay a fine
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①  living on ones knees
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