2020 电子学(北京交通大学) 最新满分章节测试答案

本答案对应课程为:点我自动跳转查看
本课程起止时间为:2020-02-24到2020-06-28

【作业】1 电子学基础 第1单元作业

1、 问题:课后习题
评分规则: 【 完成课后习题
】

1 电子学基础 第1单元测验

1、 问题:What is the input resistance between terminals B and G in the circuit shown below? (The voltage vx is a test voltage with the input resistance Rin defined as Rin ≡ vx / ix.)
选项：
A:
B:
C:
D:
答案: 【】

2、 问题:A signal source has an open-circuit voltage of 10mV and a short-circuit current of 10μA. The source resistance is          kΩ
答案: 【1】

3、 问题:An amplifier has a voltage gain of 100 V/V and a current gain of 1000 A/A.  The power gain in decibels is           dB
答案: 【50】

4、 问题:An amplifier operating from a single 15-V supply provides a 12-V peak-to-peak sine-wave signal to a 1-kΩ load and draws negligible input current from the signal source. The dc current drawn from the 15-V supply is 8 mA. The power dissipated in the amplifier is              mW.
答案: 【102】

5、 问题:The output voltage of a voltage amplifier has been found to decrease by 20% when a load resistance of 1 kΩ is connected. The value of the amplifier output resistance is              Ω
答案: 【250】

【作业】2 运算放大器 第2单元作业

1、 问题:课后习题2.7, 2.8, 2.18, 2.49, 2.70 2.95, 2.97, 2.98
评分规则: 【 完成作业
】

2 运算放大器 第2单元测验

1、 问题:The circuit shown in Fig. (a) can be used to implement a transresistance amplifier. Find the value of the input resistance , the transresistance , and the output resistance  of the transresistance amplifier. If the signal source shown in Fig. (b) is connected to the input of the transresistance amplifier, find its output voltage.
选项：
A:
B:
C:
D:
答案: 【】

2、 问题:Use the idea presented in the figure below to design a weighted summer that providesWhich choice is correct?
选项：
A:
B:
C:
D:
答案: 【】

3、 问题:What is the output voltage of the following circuit?
选项：
A:
B:
C:
D:
答案: 【】

4、 问题:Assuming ideal op amps, what is the voltage gain and the input resistance?
选项：
A:-10V/V, 10 kΩ
B:10V/V, 10 kΩ
C:-10V/V, 0
D:10V/V, 100 kΩ
答案: 【-10V/V, 10 kΩ】

5、 问题:The expression for the voltage gain of the following circuit is             .
选项：
A:
B:
C:
D:
答案: 【】

6、 问题:Consider an inverting amplifier with a nominal gain of 1000 constructed from an op amp with an input offset voltage of 3 mV and with output saturation levels of ±10 V.  The peak sine-wave input signal that can be applied without output clipping is            mV.(approximately)
答案: 【7】

7、 问题:Consider an inverting amplifier circuit designed using an op amp and two resistors, R1 = 10 kΩ and R2 = 1 MΩ. If the op amp is specified to have an input bias current of 100 nA and an input offset current of 10 nA. The output dc offset voltage resulting is              V
答案: 【0.1】

8、 问题:A noninverting amplifier with a gain of 200 uses an op amp having an input offset voltage of +2 mV. When the input is 0.01V, the output is          V
答案: 【2.4】

9、 问题:An op amp connected in a closed-loop inverting con-figuration having a gain of 1000 V/V and using relatively small-valued resistors is measured with input grounded to have a dc output voltage of –1.4 V. Its input offset voltage is                      mV
答案: 【-1.4】

10、 问题:The op amp in the circuits shown below has offset voltage of 1mV, the output voltage is            V.
答案: 【5.005】

3 二极管 第3单元测验

小提示:本节包含奇怪的同名章节内容

1、 问题:In the circuit below, let  have a peak value of 10 V and R = 1 kΩ. The peak value of  is               mA
答案: 【10】

2、 问题:In the circuit below, let  have a peak value of 10 V and R = 1 kΩ. The dc component of   is               V
答案: 【(3.17,3.19)】

3、 问题:For the circuits shown below using ideal diodes, find the values of the voltages  indicated, V =            V.
答案: 【-5】

4、 问题:For the circuits shown below using ideal diodes, find the values of the current indicated, I =            mA.
答案: 【1】

5、 问题:For the circuits shown below using ideal diodes, find the values of the current indicated, I =            mA.
答案: 【0】

6、 问题:For the circuits shown below using ideal diodes, find the values of the voltages  indicated, V =            V.
答案: 【5】

7、 问题:For the circuits shown below, assume the forward voltage drop of the diode is 0.7V, find the values of the voltages  indicated, V =            V.
答案: 【4.3】

8、 问题:For the circuits shown below, assume the forward voltage drop of the diode is 0.7V, find the values of the current indicated, I =            mA.
答案: 【0.93】

9、 问题:In the circuit below, let  have a peak value of 10 V and R = 1 kΩ. The peak value of  is               mA
答案: 【(以下答案任选其一都对)10;
9.3】

10、 问题:In the circuit below, let  have a peak value of 10 V and R = 1 kΩ. The dc component of   is               V
答案: 【(2.8,3.19)】

【作业】3 二极管 第3章作业

1、 问题:课后习题（见课件）
评分规则: 【 完成
】

【作业】3 二极管 习题课作业

1、 问题:课件example4
评分规则: 【