Below are the answers key for the 100 items set of Practice Examination 4 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. Zero current
2. 166 Joules
3. it is at a maximum
4. 3.6ohms +/- 10%
5. tends to oppose changes in current
6. a pair of plates
7. moving either the magnet or the coil
8. VLSI
9. Silver zinc
10. two coils wound on a common core
11. Cathode ray tube
12. an area of low charge density around the P-N junction
13. 10.1 MHz
14. Never
15. 14.5 MHz
16. conducting and non-conducting
17. Band pass filter
18. attract each other
19. Card readers
20. 100
21. current varies directly as the voltage and inversely as the resistance
22. very low resistance
23. Selenium cells
24. Fuse
25. 0.125 microfarad
26. no current flow from emitter to collector
27. 500 ma
28. 1.92 ohms
29. Register
30. a negative resistance region
31. 2000 G
32. output is present for less than 180 degrees of the input signal cycle
33. all nodes in the circuit
34. LSI
35. Carbon
36. frequency and induction heating
37. One
38. towards the cathode
39. Magnetic lines of force
40. stores electrical energy
41. Magnetism
42. Low resistance
43. 3 mv
44. Reactance
45. its value cannot be stepped up or down by transformer
46. Sweep voltage
47. Either c or d arbitrarily selected
48. Tank circuit
49. 16.5 khz
50. an ohmmeter
51. just below the saturation point
52. Domain
53. 8
54. 5 x 10 to the -12th
55. approximately 6.0 volts
56. the size and thickness of the crystal material
57. Peak inverse voltage
58. no current flow from the emitter to collector
59. use of transistor with narrow bases
60. great force capability handling heavy loads
61. the effective resistance is increased
62. a capacitor
63. the rms voltage is always greater than the average voltage
64. gate, anode 1 and anode 2
65. An ohmmeter test across the base collector of a transistor should show low resistance for both polarity
66. Class A amplifier
67. P type collector, N type base, P type emitter
68. 4000
69. 30 mA
70. only dc
71. Coulomb’s law
72. Hydraulic and pneumatic
73. 1600 At
74. XOR
75. Toggle switch
76. Cell
77. 10 hrs
78. 5
79. Residual magnetism
80. high resistance
81. Air gap
82. decreased
83. as large as possible
84. 4.76
85. Asynchronous
86. Bipolar
87. Yes or one
88. Potential field
89. in biasing circuits DC negative feedback is provided while amplifiers employ AC negative feedback
90. electrons are drawn to the grid and not reach the plate
91. Flux
92. Increased field voltage
93. Coulomb
94. 1.7 V and 20 mA
95. 0.25 ohms
96. Nickel-cadmium cell
97. 6.5 A
98. Volt ampere
99. Storage cell
100. an atom with unbalanced charges
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