Communications Engineering Exam 4: ECE Pre-Board - Answers

Answers key for the Pre-Board Examinations in Communications Engineering Module 4 composed of previous Board Exams Questions.

Communications Engineering Exam 4 - Answers

Below are the answers key for the 100 items set of Practice Examination 4 in Communications Engineering composed of previous Board Exams Questions and cautiously selected questions from various topics in Communications Engineering (Electronics Systems and Technology) that could possibly be given in the board.

1. 8 to 1.43 GHz

2. Ultraviolet

3. Dipole

4. Type of modulation of the main carrier

5. Half-duplex operation

6. Emission

7. Type of information to be transmitted

8. Television

9. Omnidirectional

10. Chroma keying

11. 50 dB

12. Telemetry

13. 1 dB

14. All of these

15. Isotropic

16. PAM

17. Ionospheric scatter

18. All of these

19. Pitch

20. Stereo multiplexing

21. Out of the band

22. Circular polarization

23. Impulse noise

24. Reflectometer

25. Reduce carrier single sideband emission

26. Land station

27. Vertical polarization

28. Telstar 1

29. T1

30. 768 kbps

31. APDs

32. 4.78 µV

33. 1.28 x 10-19 J

34. 34.61 ns

35. 4 KHz

36. Space diversity

37. Noise improvement factor

38. Huygen’s Principle

39. Continuous modulation

40. 30 MHz

41. F1 layer

42. Bidirectional

43. 28.17 dB

44. Linearly

45. Optical attenuator

46. TE

47. Necessary bandwidth

48. Smith chart

49. 8.2345 MHz

50. Horizontal polarization

51. Telecommand

52. ERP

53. 14/11 GHz

54. ASK

55. Beamwidth

56. NPR

57. Administration

58. Woofer

59. Below 2 GHz

60. 511

61. 8.8 dB

62. Satellite disk

63. Interference to adjacent channel

64. Carrier power

65. Volume

66. E.O. 109

67. Mobile service

68. More

69. Aeronautical fixed service

70. Low pass filter

71. Diffraction

72. Geosynchronous

73. Noise equivalent power

74. Major lobe radiation

75. 300 - 3400 Hz

76. 5925 MHz

77. Input and output

78. dP/dA

79. Fundamental

80. Parasitic elements

81. A higher index of refraction than the cladding

82. Adding C in series

83. 66.66 W

84. Pulsed modulation

85. Troposcatter

86. Spot beam

87. 1.76 dB

88. Satellite network

89. Quantizing noise

90. Stack

91. Coast station

92. Pulse modulation

93. A

94. Rayleigh scattering loss

95. No answer

96. Analogue cellular

97. Effective boresight area

98. 20 kHz

99. TVRO

100. Flare

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Complete List of Communications Engineering Exams: ECE Pre-Board


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