You dont have javascript enabled! Please enable it! Boylestad: MCQ in Power Supplies (Voltage Regulators) - Answers

Boylestad: MCQ in Power Supplies (Voltage Regulators) – Answers

Boylestad: MCQ in Power Supplies (Voltage Regulators)

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

Complete List of Chapter Quiz in Electronic Devices and Circuit Theory by Boylestad

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