Electronics Engineering Mastery Test 10: ECE Pre-Board – Answers

(Last Updated On: March 25, 2020)

Electronics Engineering Mastery Test 10: ECE Pre-Board

Below are the answers key for the 100 items set of Practice Examination 10 in Electronics Engineering composed of previous Board Exams Questions and cautiously selected questions from various topics in Electronics Engineering that could possibly be given in the board.

1. A. Respiratory failure

2. B. Fatal

3. B. Electric shock

4. D. tachometer

5. A. vibrating-reed devices or tuned circuits

6. B. zero beating

7. B. Heterodyning

8. C. Cavity wavemeter.

9. B. Zero beating

10. D. Spectrum analyzer

11. C. Cathode-Ray Oscilloscope (CRO or O-SCOPE)

12. D. Electronic Frequency Counter

13. B. Wavemeters

14. A. Beat frequency

15. D. Stroboscope

16. D. Stroboscope

17. B. Strobotac

18. A. Chronometric tachometer

19. C. Barretter

20. D. Thermistor

21. A. Thermocouple ammeter

22. A. 600 rpm

23. A. 250 hours

24. C. 100 hours

25. A. Tuned circuits

26. B. Two

27. D. Four

28. A. By varying the input voltage to the field coils

29. A. Amplidynes

30. B. 10,000

31. D. Compound-wound dc generators

32. A. P-type material

33. B. The gate terminal.

34. C. The dual-gate MOSFET.

35. A. To prevent damage from static electricity.

36. A. 1:1000

37. B. Photovoltaic cell

38. A. One

39. C. Variable resistor

40. B. A voltage gradient

41. A. From base 1 to the emitter.

42. B. High input impedance.

43. C. The SCR is primarily used for switching power on or off.

44. D. A gate signal.

45. A. The forward bias must be reduced below the minimum conduction level.

46. C. SCR

47. A. During both alternations.

48. A. Forward bias

49. C. Very low

50. B. Variable capacitance

51. A. The depletion region decreases.

52. B. Capacitance decreases.

53. B. The minority carriers.

54. A. Zener effect and avalanche effect.

55. C. Zener effect

56. B. 42

57. A. 340 V

58. B. Secondary emission

59. C. Cathode biasing

60. D. All of the choices

61. A. Analog

62. C. Speed and efficiency

63. A. Special-purpose

64. D. Continuous electrical or physical conditions.

65. A. Mechanical or electromechanical

66. B. Hybrid computers

67. A. 10 to 50 degrees Celsius

68. A. The capacitor filter

69. B. From 1 to 20 H

70. A. 120 Hz

71. A. Ada

72. D. Transistor

73. B. Information

74. A. Infinity

75. D. Negative feedback

76. C. anion

77. D. The potential difference depends on the diameter of the conductor that cuts the magnetic field.

78. A. 0.09 Ω

79. B. An ideal voltage source can be in parallel with an open circuit.

80. B. 10 kW

81. C. The power in watts, voltage and current

82. B. 0.707

83. D. 7.95

84. B. Floating state

85. C. Thermal energy

86. C. Electrostatic field

87. D. Period

88. B. Leakage flux

89. B. Integrated circuit

90. C. Number of valence electrons

91. D. Electrostatic field

92. B. Energy

93. D. Electrochemical action

94. C. 135 V

95. C. Flywheel effect

96. C. 10.79 N

97. D. Kinetic energy

98. D. 1.275 to 1.300

99. A. Gunn effect

100. A. Charge storage

Complete List of Electronics Engineering Exams: ECE Pre-Board

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