【判断题】【消耗次数:1】
三相异步电动机铭牌上的额定功率是当带有额定负载时的轴上输出的机械功率。
正确
错误
参考答案:
复制
纠错
相关题目
【判断题】 三相异步电动机的电磁功率,机械功率。
①  正确
②  错误
【判断题】 电动机的额定功率是指电动机轴上输出的机械功率。
①  正确
②  错误
【判断题】 三相异步电动机运行时,通过耦合气隙传递的功率是电机输出的机械功率。
①  正确
②  错误
【判断题】 三相绕线式异步电动机反接制动时机械功率。
①  正确
②  错误
【判断题】 三相异步电动机的额定温升,是指电动机额定运行时的额定温度。
①  正确
②  错误
【判断题】 直流电动机的额定功率是指转轴上吸收的机械功率
①  正确
②  错误
【判断题】 三相异步电动机铭牌标志的额定电压与电流均是指相电压与相电流。
①  正确
②  错误
【单选题】 三相异步电动机的启动过程是指三相异步电动机从接入电网开始转动时起,到达额定转速为止这一段过程。
①  正确
②  错误
【单选题】 当三相异步电动机的转差率S=1时,电动机的状态是( )。
①  额定运行状态
②  反接制动状态
③  接通电源起动瞬间
④  回馈制动状态
【单选题】 三相异步电动机全压起动时,电动机的起动电流可达到电动机额定电流的( )倍。
①  10~20
②  4~7
③  24~30
④  一样
随机题目
【单选题】 His____ to carry out the plan was weakened by the difficulties he met with.
①  determination
②  decision
③  choice
④  judgment
【单选题】 The textbook is for the ____ students, not for the beginners.
①  foreign
②  blind
③  advanced
④  deaf
【单选题】 “By 1929, Mickey Mouse was as popular____ children as Coca-Cola.”
①  in
②  with
③  for
④  to
【单选题】 We looked at four cars today. The first two were far too expensive, but____ ones were reasonable priced.
①  other
②  others
③  the other
④  another
【单选题】 Nobody is ______, so try not to worry too much about that.
①  full
②  entire
③  perfect
④  complete
【单选题】 Tom: It’s the most delicious fruit I have had a long time.
①  I’m so glad you like it.
②  You are not hungry now.
③  I like eating this fruit, too.
④  You should like it.
【单选题】 I feel very helpless to see the ____telephone bill.
①  including
②  increasing
③  declaring
④  decreasing
【单选题】 Alotofthesmalltownsintheareaaredefinitelyworth ____.
①  to visit
②  to be visit
③  be visited
④  visiting
【单选题】 You can not see the doctor ____ you have made an appointment with him.?
①  except ?
②  even ?
③  unless ?
④  however?
【单选题】 She was wondering whether he has been writing anything new ____
①  late
②  later
③  latter
④  lately