【判断题】【消耗次数:1】
正弦交流电路的视在功率等于有功功率和无功功率之和。
正确
错误
参考答案:
复制
纠错
相关题目
【单选题】 已知单相交流电路中某负载视在功率为5kVA,有功功率为4kW,则其无功功率Q为(  )。
①  1kVar
②  3kVar
③  9kVar
④  0kVar
【单选题】 正弦交流电路的视在功率是表征该电路的( )。
①  电压有效值与电流有效值乘积
②  平均功率
③  瞬时功率最大值
【判断题】 电感元件的正弦交流电路中,消耗的有功功率等于零。
①  正确
②  错误
【判断题】 电感、电容相串联的正弦交流电路的视在功率0。
①  正确
②  错误
【判断题】 RLC串联电路在正弦交流电路中,消耗的有功功率0。
①  正确
②  错误
【单选题】 电感、电容相串联的正弦交流电路,消耗的有功功率为( )
①  UI
②  IX
③  0
【判断题】 电感线圈在交流电路中不消耗有功功率。
①  正确
②  错误
【判断题】 三相交流电路中,无论负载是对称还是不对称,三相电路总的有功功率都等于各相负载的有功功率之和。
①  正确
②  错误
【判断题】 电阻元件上只消耗有功功率,不产生无功功率。
①  正确
②  错误
【单选题】 某一负载消耗的有功功率为300W,消耗的无功功率为400var,则该负载的视在功率( )。
①  700VA
②  100VA
③  500VA
随机题目
【单选题】 ____ music is the music that is considered to be serious and of lasting value as opposed to jazz, folk, etc.
①  Domestic
②  Foreign
③  National
④  Classica
【单选题】 The school committee hoped that their choice of play would be ______ with the students and their parents.
①  recognized
②  popular
③  favorable
④  fascinated
【单选题】 I’ ll be____ the whole factory next week when the director’ s away.
①  charge
②  in the charge of
③  in charge of
④  take charge of
【单选题】 ----Will you please go to see the movie Guanyinshan with me ?----No, I wont. I ______ it already.
①  saw
②  have seen
③  see
④  will see
【单选题】 Things are back to _____ since we paid off all our debts.
①  formal
②  normal
③  regular
④  common
【单选题】 This organization brought Western artists together in the hope of making more of an impact on the art community ____any of them could individually and to promote Western art by women.
①  rather than
②  rather
③  than
④  other than
【单选题】 Gone With The Wind is a ____ movie.
①  remarkable
②  perfect
③  indispensable
④  outstanding
【单选题】 The message is clear: Just as tea and banana can’t go together, ______ should the son of a low class family expect to marry the daughter of a nobleman.
①  either
②  not
③  neither
④  nor
【单选题】 The ____ Court is the highest court in the United States.
①  Superior
②  Super
③  Supreme
④  Great
【单选题】 Peter could hardly catch what I said, _____ he?
①  could
②  couldn’ t
③  did
④  didn’ t