【判断题】【消耗次数:1】
直流电机换向极绕组与电枢绕组串联。
正确
错误
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相关题目
【单选题】 直流电机换向极绕组与_________。?
①  电枢绕组并联
②  电枢绕组串联
③  并励绕组串联
【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
【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】 一台六极直流电机电枢绕组为单波绕组,其并联支路对数为
①  1
②  2
③  3
④  6
【单选题】 直流电机中的换向极由( )组成。
①  换向极铁心
②  换向极绕组
③  换向器
④  换向极铁心和换向极绕组
【判断题】 对于直流电机,下列部件不在定子上的是电枢绕组。
①  正确
②  错误
【单选题】 直流电机电枢绕组元件中,电动势和电流是( )。
①  直流的
②  交流的
③  交直流并存
【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
【判断题】 直流电机励磁绕组不与电枢连接,励磁电流由独立的电源供给,称为他励电机。
①  正确
②  错误
【判断题】 直流电机应采用尽可能接近整距的绕组().
①  正确
②  错误
随机题目
【多选题】 A: Hey, taxi! Could you take me to the Friendship Hotel?B: _______________ .
①  Sure
②  Certainly
③  Of course
④  Here you are
【多选题】 A: Is he married?B:_________
①  No, he is not married.
②  No, he is still single.
③  No, he doesnt.
④  No, he didnt.
【单选题】 Department stores in London are very large. They are called department stores because they have many_________ departments.
①  delicious
②  different
③  domestic
④  delighted
【单选题】 My father used to be very weak,_________ now he is much stronger.
①  but
②  at
③  and
④  when
【单选题】 A: You always enjoy seeing old films, dont you?B: No, not always, but_________ .
①  sometime
②  some time
③  sometimes
④  some times
【单选题】 If you are tired and_________, you can hardly (几乎不) remember things.
①  relaxed
②  excited
③  unusual
④  unhappy
【单选题】 For programs with_________ audiences, the cost of commercials is high.
①  few
②  more
③  small
④  large
【单选题】 The experiment_________ in the lab now.
①  was done
②  is being done
③  has been done
④  is doing
【单选题】 How_________ people do you have in your family?
①  much
②  many
③  long
④  far
【单选题】 A traveller was walking _______ the road.
①  besides
②  away
③  through
④  along