【判断题】【消耗次数:1】
触发普通晶闸管的触发脉冲,也能触发可关断晶闸管。
正确
错误
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相关题目
【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
【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
【单选题】 晶闸管的导通控制信号由触发电路提供。
①  正确
②  错误
【单选题】 单相半控桥整流电路的两只晶闸管的触发脉冲依次应相差______度。
①  60°
②  120°
③  180°
④  360°
【单选题】 晶闸管触发电路中,若改变______的大小,则输出脉冲产生相位移动,达到移相控制的目的。
①  同步电压
②  控制电压
③  脉冲变压器变比
④  电源电压
【判断题】 在三相桥式全控整流电路中,采用双窄脉冲触发晶闸管元件时,电源相序还要满足触发电路相序要求时才能正常工作。
①  正确
②  错误
【单选题】 对触发脉冲的要求有()。
①  一定的宽度,且达到一定的电流
②  一定的宽度,且达到一定的功率
③  一定的功率,且达到一定的电流
④  一定的功率,且达到一定的电压
【单选题】 按触发器触发方式的不同,双稳态触发器可分为( )
①  高电平触发和低电平触发
②  上升沿触发和下降沿触发
③  电平触发或边沿触发
④  输入触发或时钟触发
【判断题】 用稳压管削波的梯形波给单结晶体管自激振荡电路供电,目的是为了使触发脉冲与晶闸管主电路实现同步。
①  正确
②  错误
【简答题】 试用单稳态触发器实现脉冲延时电路
随机题目
【单选题】 Danish bacon and eggs [] a good solid English breakfast.
①  makes
②  make
【单选题】 She happily deposits the money she has earned teaching English in her savings account. Find any misplaced modifier in the sentence
①  happily
②  she has earned
③  in her savings account
【单选题】 Well have a picnic in the park this Saturday [] it rains or it is very cold.
①  since
②  if
③  until
④  unless
【单选题】 His family [] divided opinions on many issues.
①  is
②  are
【单选题】 There were some chairs left over[] everyone had sat down.
①  when
②  until
③  that
④  where
【单选题】 These candidates have vague notions of serving the company, [] they have never taken trouble to find out the actual tasks they will be required to do.
①  or
②  and
③  but
④  so
【单选题】 Which sentence is correct?
①  On entering the classroom, the students stood up and said, Good morning!
②  On entering the classroom, the teacher was greeted by the students with Good morning!
【单选题】 When their party came back to the camp site, ours arrrived two hours earlier. Identify the mistake in the sentence.
①  When
②  ours
③  arrived
④  earlier
【单选题】 People dont like to buy books in this bookstore with hard covers. Find any misplaced modifier in the sentence.
①  this
②  with hardcover
【单选题】 People in Anhui are proud of [] they have achieved in the last ten years.
①  that
②  which
③  what
④  how