Frenzel Self-test in Amplitude Modulation and Single-Sideband Modulation – Answers

Below are the answers key for Frenzel Self-test in Chapter 2: Amplitude Modulation and Single-Sideband Modulation from the book COMMUNICATIONS ELECTRONICS by Louis E. Frenzel. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam.

1. translated

2. varies, carrier

3. modulator, carrier, modulating signal

4. amplitude

5. false

6. envelope, modulating signal

7. time-domain

8. Vc = sin 2 fct

9. true

10. c

11. c

12. a

13. d

14. modulating signal, carrier

15. 43.4

16. 100

17. 17.34 V

18. 66.67

19. sidebands

20. 635, 625

21. 10

22. time, oscilloscope

23. frequency, spectrum analyzer

24. sidebands

25. d

26. Carrier, upper sideband, lower sideband

27. b

28. b

29. antenna

30. carrier, sideband

31. 0.45

32. 5.06

33. 63.25

34. 236 W

35. 400 W, 89.44 percent

36. 1.8 amperes

37. DSB

38. false

39. b

40. a

41. less spectrum space, more power in the sidebands with greater efficiency, less noise, little or no fading

42. telephone systems, two-way radio

43. c

44. true

45. vestigial sideband

46. 863.7

47. 345

48. 3-, 4-W

49. frequency conversion

50. mixer, converter

51. 4.155 MHz, 7.855 MHz, 455 kHz, 3.7 MHz

52. 117.8 MHz

53. filter or tuned circuit

54. false

55. true

56. heterodyning

Complete List of Self-test and Reviewers in Communications Electronics

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