低频电子线路复习题一

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1、低频电子线路复习题一1.1在晶体管放大电路中，测得晶体管的各个电极的电位如图1.1所示，该晶体管的类型是[]A.NPN型硅管B.PNP型硅管C.NPN型锗管图1.12V6VD.PNP型锗管1.3V1.2某三极管各个电极的对地电位如图1-2所示，可判断其工作状态是[]A.饱和B.放大C.截止图1.2D.已损坏1.3在如图1.3所示电路中，当电源V=5V时，测得I=1mA。若把电源电压调整到V=10V，则电流的大小将是[]A.I=2mAB.I<2mAC.I>2mAD.不能确定图1.31.4在如图1-7所示电路中电源V=5V不变。当温度为20OC时测得二极管的电压UD=0.7V。

2、当温度上生到为40OC时,则UD的大小将是[]A.仍等于0.7VB.大于0.7VC.小于0.7VD.不能确定图1.41.5在杂质半导体中，多数载流子的浓度主要取决于[]A.温度B.掺杂工艺C.杂质浓度D.晶体缺陷1.6对于同一个晶体管而言，反向电流最小的是[]A.ICBOB.ICESC.ICERD.ICEO1.7二极管的主要特性是[]A.放大特性B.恒温特性mainconstructionmachinesconfiguredlistofmainconstructionequipmentnumberequipmentnamemodelunitsnumberremark,lif

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