Malvino Chapter 3

Chapter 3 

1. When the graph of current versus voltage is a straight 
line, the device is referred to as 
a. Active 
b. Linear 
c. Nonlinear 
d. Passive 

2. What kind of device is a resistor? 
a. Unilateral 
b. Linear 
c. Nonlinear 
d. Bipolar 

3. What kind of a device is a diode? 
a. Bilateral 
b. Linear 
c. Nonlinear 
d. Unipolar 

4. How is a nonconducting diode biased? 
a. Forward 
b. Inverse 
c. Poorly 
d. Reverse 

5. When the diode current is large, the bias is 
a. Forward 
b. Inverse 
c. Poor 
d. Reverse 

6. The knee voltage of a diode is approximately equal to 
the 
a. Applied voltage 
b. Barrier potential 
c. Breakdown voltage 
d. Forward voltage 

7. The reverse current consistsof minority-carrier current 
and 
a. Avalanche current 
b. Forward current 
c. Surface-leakage current 
d. Zener current 

8. How much voltage is there across the second 
approximation of a silicon diode when it is forward 
biased? 
a. 0 
b. 0.3 V 
c. 0.7 V 
d. 1 V 

9. How much current is there through the second 
approximation of a silicon diode when it is reverse 
biased? 
a. 0 
b. 1 mA 
c. 300 mA 
d. None of the above 

10. How much forward diode voltage is there with the 
ideal-diode approximation? 
a. 0 
b. 0.7 V 
c. More than 0.7 V 
d. 1 V 

11. The bulk resistance of a 1N4001 is 
a. 0 
b. 0.23 ohm 
c. 10 ohm 
d. 1 kohm 

12. If the bulk resistance is zero, the graph above the 
knee becomes 
a. Horizontal 
b. Vertical 
c. Tilted at 450 
d. None of the above 

13. The ideal diode is usually adequate when 
a. Troubleshooting 
b. Doing precise calculations 
c. The source voltage is low 
d. The load resistance is low 

14. The second approximation works well when 
a. Troubleshooting 
b. Load resistance is high 
c. Source voltage is high 
d. All of the above 

15. The only time you have to use the third approximation 
is when 
a. Load resistance is low 
b. Source voltage is high 
c. Troubleshooting 
d. None of the above 

16. How much load current is there in Fig. 3-19 (see your 
textbook) with the ideal diode? 
a. 0 
b. 14.3 mA 
c. 15 mA 
d. 50 mA 

17. How much load current is there in Fig. 3-19 (see your 
textbook) with the second approximation? 
a. 0 
b. 14.3 mA 
c. 15 mA 
d. 50 mA 

18. How much load current is there in Fig. 3-19 with the 
third approximation? 
a. 0 
b. 14.3 mA 
c. 15 mA 
d. 50 mA 

19. If the diode is open in Fig. 3-19, the load voltage is 
a. 0 
b. 14.3 V 
c. 20 V 
d. -15 V 

20. If the resistor is ungrounded in Fig. 3-19, the voltage 
measured with a DMM between the top of the resistor 
and ground is closest to 
a. 0 
b. 15 V 
c. 20 V 
d. -15 V 

21. The load voltage measures zero in Fig. 3-19. The 
trouble may be 
a. A shorted diode 
b. An open diode 
c. An open load resistor 
d. Too much supply voltage 




Also try:

Malvino Chapter 1
Malvino Chapter 2
Malvino Chapter 4
Malvino Chapter 5
Malvino Chapter 6
Malvino Chapter 7
Malvino Chapter 8
Malvino Chapter 9
Malvino Chapter 10
Malvino Chapter 11
Malvino Chapter 12
Malvino Chapter 13
Malvino Chapter 14
Malvino Chapter 15
Malvino Chapter 16
Malvino Chapter 17
Malvino Chapter 18
Malvino Chapter 19
Malvino Chapter 20
Malvino Chapter 21
Malvino Chapter 22
Malvino Chapter 23
Malvino Chapter 24