Below are the answers key for the Multiple Choice Questions (Quiz) in Power Supplies (Voltage Regulators) from the book Electronic Devices and Circuit Theory 10th Edition by Robert L. Boylestad.
Answer Key:
1. A. Battery charger
2. B. 8.5%
3. A. 4.17%
4. C. Capacitor filter
5. B. 1.28 V
6. B. 0.5
7. A. full, half
8. A. 0
9. C. The time during which the diode(s) is (are) conducting
10. B. The time during which the diodes are not conducting
11. C. 37.78 V
12. A. 3.2%
13. A. √3
14. B. False
15. C. Decrease the ac voltage component
16. D. 48.78 V
17. A. True
18. B. False
19. C. 1.3 ÷ C
20. C. Transistor Q1
21. D. Resistors R1 and R2
22. A. Op-amp
23. B. 17 V
24. C. Both the Zener diode and the transistor base-emitter voltage
25. B. Zener diode
26. C. Hundreds of milliamperes to tens of amperes
27. B. +5 V to +24 V
28. D. 2 V
29. B. 2
30. B. 1.2 V to 37 V
31. C. 1.25 V, 100 μA
32. C. 12 V
33. D. –12 V
34. B. –5 V
35. A. 5 V
FILL-IN-THE-BLANKS
1. D. All of the above
2. C. pulsating dc voltage
3. A. smaller, better
4. B. average of the signal
5. C. is reduced
6. A. smaller, better
7. D. a larger, less
8. A. 0%
9. A. smaller than
10. C. larger than
11. B. constant dc voltage
12. C. smaller than
13. B. 0.5
14. B. twice
15. C. charging and discharging of the capacitor
16. D. larger, less, higher
17. A. shorter, larger
18. D. both the short-circuit resistor Rsc and transistor Q2
19. C. both the output voltage and output current
20. B. switching regulator
21. D. All of the above
22. D. All of the above
23. A. 11.5 V, 12.5 V
24. B. negative voltage regulators
25. C. LM317
Post a Comment
EmoticonClick to see the code!
To insert emoticon you must added at least one space before the code.