【单选题】【消耗次数:1】
单相桥式整流电路输出电压平均值为30V,负载电阻,则流过每个二极管的平均电流为(   )。
100mA
150mA
300mA
600mA
参考答案:
复制
纠错
相关题目
【单选题】 单相桥式整流电路输出电压平均值为30V,负载电阻<imgwidth="66"height="24"v:shapes="_x0000_i2244"src="http://wljy.whut.edu.cn:80/uploadfiles/word/mndzjs.files/image032.png">,则流过每个二极管的平均电流为(   )。
①  100mA
②  150mA
③  300mA
④  600mA
【单选题】 二极管外加电压VD=0.6V,流过二极管电流为120mA,则二极管的正向直流电阻RD是( )。
①  15Ω
② 
③  20Ω
【单选题】 单相桥式整流电容滤波电路输出电压平均值Uo=( )Uz。
①  0.45
②  0.9
③  1.2
【单选题】 单相桥式整流电路输出的脉动电压平均值UO(AV)与输入交流电压的有效值U2之比近似为
①  0.9
②  1
③  1.2
④  1.4
【单选题】 单相桥式整流电路由电源变压器、四只整流二极管和负载组成。
① 
② 
【判断题】 在桥式整流电阻负载中,理想二极管承受最高反压是1.414U2。
①  正确
②  错误
【单选题】 变压器副边电压有效值为U2时,经桥式整流后的输出电压平均值约为( )。
①  0.45U2
②  1.2U2
③  0.9U2
【单选题】 在桥式整流电路中,每只整流管中的电流 ID,则负载流过电流 IO为______。
①  2U2
②  IO/2
③  3IO
④  IO
【单选题】 利用二极管的( )组成整流电路。
①  正向特性
②  单向导电性
③  反向击穿特性
【单选题】 在单相桥式整流电路中,输出电压的平均值UO与变压器副边电压有效值U2应满足______关系。
①  U0=0、9U2
②  U0=1、0U2
③  U0=1、4U2
④  U0=1、2U2
随机题目
【单选题】 Heres a letter for you, Jim!? - Oh, [填空] is from my friend.
①  he
②  it
③  she
④  it's
【单选题】 The building is twice [填空] big as that one.
①  as
②  so
③  for
④  at
【单选题】 John is not [填空] young as you.
①  so
②  more
③  much
④  much more
【单选题】 I often watch [填空] TV in [填空] evening.
①  a,the
②  an,the
③  /,the
④  /,a
【单选题】 May [填空] speak to Jack?
①  I
②  me
③  us
④  we
【单选题】 When we speak to people, we should be ______.
①  as polite as possible
②  as polite as possibly
③  as politely as possible
④  as politely as possibly
【单选题】 He arrived [填空] Guiyang [填空] night.
①  in; in
②  to; at
③  in; at
④  at; in
【单选题】 His father began to work ______ he was seven years old.
①  as old as
②  as early as
③  as soon as
④  as much as
【单选题】 There is an apple [填空] the tree.
①  in
②  on
③  at
④  for
【单选题】 Sunday is the?[填空] day of a week.
①  one
②  first
③  second
④  a