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本课程起止时间为:2021-04-12到2021-06-30

Chapter 2: Learn the Principles of Diodes Easily and Joyfully Qiuz on Diodes

1、 问题:As shown in the figure, if power supply voltage is +5 volts and the forward voltage drop of the LED is +1.8 volts, what is the voltage across the resistor R1? (volt, voltage to Ground at TP1)
选项:
A:3
B:4.2
C:3.2
D:1.8
答案: 【3.2

2、 问题:As shown in the figure, if power supply voltage is +3 volts and the forward voltage drop of the LED is +2.0 volts, what is the voltage across the resistor R1? (volt, voltage to Ground at TP1)
选项:
A:5.0
B:4.2
C:3.0
D:1.0
答案: 【1.0

3、 问题:As shown in the figure, if power supply voltage is +3 volts and the forward voltage drop of the LED is +2.0 volts, what is the voltage across the resistor R1? (voltage to Ground at TP1)
选项:
A:5
B:0
C:3
D:1
答案: 【0

4、 问题:As shown in the figure, if power supply voltage is +10 volts and the forward voltage drop of the LED is +2.0 volts, what is the voltage across the resistor R1? (voltage to Ground at TP1)
选项:
A:0
B:5
C:10
D:12
答案: 【0

5、 问题:As shown in the figure, if power supply voltage is +1.5 volts and the forward voltage drop of the Schottky diode is +0.3 volts, what is the voltage across the diode? (voltage to Ground at TP1)
选项:
A:1.8
B:1.5
C:1.7
D:1.2
答案: 【1.5

6、 问题:As shown in the figure, if power supply voltage is -3 volts and the forward voltage drop of the LED is +2.0 volts, what is the voltage across the resistor R1? (voltage to Ground at TP1)
选项:
A:5.0
B:-4.2
C:-5.0
D:-1.0
答案: 【-1.0

7、 问题:As shown in the figure, if power supply voltage is -1.0 volt and the forward voltage drop of the LED is +2.0 volts, what is the voltage across the resistor R1? (voltage to Ground at TP1)
选项:
A:3.0
B:-1.0
C:-3.0
D:0
答案: 【0

8、 问题:As shown in the figure, if power supply voltage is +0.5 volts and the forward voltage drop of the LED is +2.0 volts, what is the voltage across the resistor R1? (voltage to Ground at TP1)
选项:
A:1.5
B:2.5
C:3.0
D:0.0
答案: 【0.0

9、 问题:As shown in the figure, if power supply voltage is +50 volts and the forward voltage drop of the LED is +2.0 volts and breakdown voltage VBR is -30 volts, what is the voltage across the resistor R1? (voltage to Ground at TP1)
选项:
A:30
B:20
C:0
D:80
答案: 【20

10、 问题:As shown in the figure, if power supply voltage is +15 volts and the forward voltage drop of the Schottky diode is +0.3 volts, what is the voltage across the diode? (voltage to Ground at TP1)
选项:
A:15
B:18
C:12
D:10
答案: 【15

11、 问题:As shown in the figure, if power supply voltage is +15 volts and the forward voltage drop of the Schottky diode is +0.3 volts, what is the voltage across the diode? (voltage to Ground at TP1)
选项:
A:18
B:15
C:0.7
D:0.3
答案: 【0.3

12、 问题:As shown in the figure, if power supply voltage is -15 volts and the forward voltage drop of the Schottky diode is +0.3 volts, what is the voltage across the diode? (voltage to Ground at TP1)
选项:
A:18
B:-15
C:15
D:-15.3
答案: 【-15

13、 问题:As shown in the figure, if power supply voltage is -15 volts and breakdown voltage VBR of the Zener diode is -9 volts, what is the voltage across the diode? (voltage to Ground at TP1)
选项:
A:7
B:-0.7
C:15
D:-9
答案: 【-0.7

14、 问题:As shown in the figure, if power supply voltage is -0.4 volts and breakdown voltage VBR of the Zener diode is -9 volts, what is the voltage across the diode? (voltage to Ground at TP1)
选项:
A:9.4
B:-0.4
C:0.7
D:-9.4
答案: 【-0.4

15、 问题:As shown in the figure, if power supply voltage is +5 volts and breakdown voltage VBR of the Zener diode is -9 volts, what is the voltage across the resistor R1? (voltage to Ground at TP1)
选项:
A:5
B:0
C:-4
D:4
答案: 【0

16、 问题:As shown in the figure, if power supply voltage is +15 volts and breakdown voltage VBR of the Zener diode is -9 volts, what is the voltage across the resistor R1? (voltage to Ground at TP1)
选项:
A:15
B:0
C:-6
D:6
答案: 【6

17、 问题:As shown in the figure, if power supply voltage is +15 volts and breakdown voltage VBR of the Zener diode is -9 volts, what is the voltage across the resistor R1? (voltage to Ground at TP1)
选项:
A:15.7
B:24
C:-6
D:14.3
答案: 【14.3

18、 问题:As shown in the figure, if power supply voltage is +0.5 volts and breakdown voltage VBR of the Zener diode is -9 volts, what is the voltage across the resistor R1? (voltage to Ground at TP1)
选项:
A:9.6V
B:0V
C:-6V
D:8.5V
答案: 【0V

19、 问题:As shown in the figure, if power supply voltage is +0.5 volts and the forward voltage drop of the LED is +2.0 volts, what is the current flowing through the resistor R1?
选项:
A:0mA
B:5mA
C:15mA
D:0Volt
答案: 【0mA

20、 问题:As shown in the figure, if power supply voltage is +5 volts and the forward voltage drop of the LED is +2.0 volts, what is the current flowing through the resistor R1?
选项:
A:10mA
B:5mA
C:15mA
D:20mA
答案: 【10mA

21、 问题:As shown in the figure, if power supply voltage is +10 volts and the forward voltage drop of the LED is +2.0 volts, what is the power consumption of the LED?
选项:
A:23mW
B:53mW
C:100mW
D:88mW
答案: 【53mW

22、 问题:As shown in the figure, if the allowable power consumption of the LED is 100 milliwatts and the forward voltage drop of it is +2.0 volts, what is the power supply voltage that may damage the LED?
选项:
A:20v
B:10v
C:16v
D:15v
答案: 【20v

Chapter 3 The Concept of Impedance Quiz on impedance

1、 问题:There is a signal generator with a nominal output impedance of 600Ω. The output voltage without load is  2 volts. If connect a load resistor of 1000Ω to the generator, what is the voltage across the 1000Ω resistor?
选项:
A:2.5V
B:1.0V
C:1.25V
D:0.5V

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