电路与模拟电子技术基础单项选择题每日一练(2020.05.29)

单项选择题
若二极管D2接反，则（）
A.变压器有半周被短路，会引起元、器件损坏
B.变为半波整流
C.电容C将过压击穿
D.稳压管将过流损坏
单项选择题
The characteristic of an ideal diode are those of a switch that can conduct current（）.
A.in both directions
B.in one direction only
C.in both directions but in only one direction at a time
D.depends on the circuit it is used in
单项选择题
设U2（有效值）=10V，则UI（AV）（）
A.4.5V
B.9V
C.12V
D.14V
单项选择题
若电阻R短路，则（）
A.U_O将升高
B.变为半波整流
C.电容C将击穿
D.稳压管将损坏
单项选择题
What is the value of the voltage dropped across forward-biased silicon diodes that are connected in parallel with each other？（）.
A.11.3V
B.35V
C.7V
D.4V