Boylestad: MCQ in Bipolar Junction Transistor Amplifiers – Answers

(Last Updated On: January 16, 2020)

Below are the answers key for the Multiple Choice Questions (Quiz) in Bipolar Junction Transistor Amplifiers from the book Electronic Devices and Circuit Theory 10th Edition by Robert L. Boylestad.

Answer Key:

1. Small- or large-signal

2. Less than 1

3. Ac power to the load/dc power supplied

4. All of the above

5. hybrid equivalent

6. re

7. All of the above

8. All of the above

9. All of the above

10. resistive, ohms, megohms

11. current

12. Siemen

13. hib

14. A few ohms to a maximum of 50 Ω

15. Less than 1

16. Ie

17. 40 kΩ to 50 kΩ

18. ro ≥ 10RC

19. ro ≥ 10RC and RB ≥ 10re

20. The output and input voltages are 180º out of phase.

21. 180°

22. All of the above

23. Fixed-bias common-emitter and voltage-divider with bypass capacitor

24. Emitter-follower

25. emitter-follower

26. high, low

27. Ai

28. βre < 10R2 29. Common-base 30. 180° 31. All of the above 32. False 33. False 34. The effect of Rs and RL must be considered as a product and evaluated individually. 35. larger, smaller 36. β1 • β2 37. 1 38. hr 39. βre

Fill-in-the-blanks-answers

1. magnitude

2. re and hybrid equivalent

3. applied dc voltage

4. All of the above

5. greater than

6. either in phase or 180º out of phase

7. forward-biased, reverse-biased

8. small, high

9. in phase

10. IB, IC

11. IE

12. 180° out of phase

13. moderate, high

14. hf

15. hr, ho

16. base, collector

17. dc level of VB

18. Ai

19. significantly increases

20. slightly less than 1

21. in phase

22. high, low

23. Av

24. low, high

25. in phase, in phase

26. no

27. always less than

28. parallel

29. Q-point

30. smaller, lower

31. larger, lower

32. 1

33. pnp, npn

34. hie

35. Av

Complete List of Chapter Quiz in Electronic Devices and Circuit Theory