2024智慧树网课答案 模拟电子技术基础（西安邮电大学） 最新完整智慧树知到满分章节测试答案

第一章 单元测试

1、 问题:

Which of the following is not a commonly used semiconductor material'? （    ） 

选项：
A:carbon
B:lead
C:silicon
D:germanium
答案: 【
lead
】

2、 问题:

The characteristic of an ideal diode are those of a switch that can conduct current（    ） .

选项：
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
答案: 【
in one direction only
】

3、 问题:

When a diode is doped with either a pentavalent or a trivalent impurity its resistance will （    ） .

选项：
A:increase
B:decrease
C:make the resistance stable against variation due to temperature
答案: 【
decrease
】

4、 问题:

The piecewise linear model, equivalent circuit of the diode consists of （    ）.

选项：
A:a junction capacitor, a battery, a small resistor, and the ideal diode
B:a battery, a small resistor, and the ideal diode
C:a battery and the ideal diode
D:the ideal diode
答案: 【
a battery, a small resistor, and the ideal diode
】

5、 问题:

When a p-n junction is reverse-biased, its junction resistance is （    ）.

选项：
A:high
B:low
C:determined by the components that are external to the device
D:constantly changing
答案: 【
high
】

第二章 单元测试

1、 问题:

What is the value of the voltage dropped across forward-biased silicon diodes that are connected in parallel with each other?  （    ）.

选项：
A:11.3 V
B:0.35 V
C:0.7 V
D:1.4 V
答案: 【
0.7 V
】

2、 问题:

The resistor voltage and resistor current in this circuit are （    ）.

选项：
A:10 V, 5 mA
B:11 V, 2 mA
C:11 V, 11 mA
D:2 V, 11 mA 
答案: 【
11 V, 11 mA
】

3、 问题:

Which of the following circuits is used to eliminate a portion of a signal? （    ）.

选项：
A:Clipper
B:Damper
C:Voltage multiplier
D:Voltage divider
答案: 【
Clipper
】

4、 问题:

The circuit shown here is a （    ）. 

选项：
A:series clipper 
B:parallel clipper
C:series clamper
D:shunt clamper 
答案: 【
parallel clipper
】

5、 问题:

The Zener diode must be operated such that （    ）.

选项：
A:
B: is less than the specified 
C:the applied voltage is greater than 
D:All of these
答案: 【
All of these
】

第三章 单元测试

1、 问题:

In the active region, the base-emitter junction  （    ）.

选项：
A:and the base-collector junctions are both forward-biased
B:and the base-collector junctions are both reverse-biased
C:is forward-biased while the base-collector junction is reversed-biased
D:is reverse-biased while the base-collector junction is forward-biased
答案: 【
is forward-biased while the base-collector junction is reversed-biased
】