【单选题】【消耗次数:1】
纯电感正弦交流电路中,电压的有效值等于电流的有效值与感抗的乘积,在相位上电压比电流( )。
超前90°
超前120°
滞后90°
滞后120°
参考答案:
复制
纠错
相关题目
【单选题】 纯电容正弦交流电路中,电压的有效值等于电流的有效值与容抗的乘积,在相位上电压比电流( )。
①  超前90°
②  超前120°
③  滞后90°
④  滞后120°
【单选题】 电容元件的正弦交流电路中,电压有效值不变,当频率增大时,电路中电流有效值将()。
①  增大
②  减小
③  不变
【单选题】 电感元件的正弦交流电路中,电压有效值不变,当频率增大时,电路中电流将( )
①  增大
②  减小
③  不变
【单选题】 电感元件的正弦交流电路中,电压有效值不变,当频率增大时,电路中电流将
①  增大
②  减小
③  不变
④  不确定
【单选题】 若交流电路的电流相位比电压相位超前,则电路成(??)
①  电阻性
②  电感性
③  电容性
【单选题】 电容元件的正弦交流电路中,电压有效值不变,频率增大时,电路中电流将( )。
①  增大
②  减小
③  不变
【单选题】 若交流电路的电流相位比电压相位超前,则电路呈
①  电阻性
②  电感性
③  电容性
④  不确定
【单选题】 电容元件的正弦交流电路中,电压有效值不变,当频率增大时,电路中电流将( )
①  增大
②  减小
③  不变
【单选题】 在电感元件的交流电路中,电压和电流的相位
①  相同
②  电压的相位比电流的相位超前90°
③  电压的相位比电流的相位落后90°
④  不确定
【判断题】 电感元件上的电压在相位上超前电流90°。
①  正确
②  错误
随机题目
【判断题】 I dont swim now, but I used to do when I was a kid.
①  正确
②  错误
【判断题】 His government insisited that he stay until he finished his degree.
①  正确
②  错误
【判断题】 The girl is made to do her homework right after she comes from school.
①  正确
②  错误
【判断题】 This kind of trousers is washed very well.
①  正确
②  错误
【单选题】 Never before ___ in greater need of modern public transport than it is today.
①  ?has this city been
②  ?this city has been
③  ?was this city
④  this city was
【单选题】 Little ___ that we were watching his every move, so he seemed to be going his own way in this business.
①  he realized
②  ?he didn’t realize
③  ?didn’t he realize
④  ?did he realize
【单选题】 It is what you do rather than what you say ___ matters.
①  that
②  what
③  which
④  this
【单选题】 After dinner the minister made a short ___ to the guests.
①  delivery
②  pronunciation
③  conversation
④  speech
【单选题】 It was for this reason ___ her uncle moved out of New York and settled down in a small village.
①  which
②  why
③  that
④  how
【单选题】 The car salesman took the customer for a driver in the new model in order to ___ its improved features.
①  advocate
②  demonstrate
③  exhibit
④  reveal