This is the Section 2 Module 6 of the compiled Electronics Review Materials taken from different sources including but not limited to Electronics books, past Board Exams Questions, Journals and the Internet. This particular reviewer in Electronics Engineering has random Questions and Answers in random topics. Make sure to familiarize each questions to increase the chance of passing the ECE Board Exam.
Electronics Engineering Reviewers: Section 2 Module 6
Question |
Answer |
1. Which is generally not possible in a geomagnetic field storm? |
Disruption in microwave radio links |
2. In which of the following places would you most likely choose a Lithium Battery |
Microcomputer memory backup |
3. An application in which an analog meter would almost always be preferred over a digital meter is: |
Signal strength indicator in radio receiver |
4. Microwave transmission, coaxial cables, fiber communication are |
Communication links |
5. Identification card with an embedded chip worn by a person |
Active badge |
6. Device that inputs data by scanning letters and numbers |
Wand reader |
7. The power of a solar panel does not depend on: |
Operating frequency |
8. Bubble memory is used in |
Large computers |
9. Logic Chip is known as |
Microprocessor |
10. Multiple programs can be executed |
Concurrently |
11. Known as a magnetized spot |
1 bit |
12. Which does not result in adding acceptor impurities |
Substance has electron surplus |
13. Device that reverses magnetic field polarity to keep the dc motor rotating |
Commutator |
14. Department in an organization that helps users with the software |
Information center |
15. Energy in IRED is caused by |
Electron energy change |
16. The PN junction of a reversed biased capacitor is dependent on the following except |
Frequency |
17. Hard disk can be back-up using |
Tape back-up system |
18. Device used between connection of LAN over the internet protocol |
IP switch |
19. Persuading a person to tell his password |
Social engineering |
20. Hardware/Software combination that comprises a computer’s functionality |
FORTRAN |
21. The insulation layer of____ in the MOSFET construction that accounts for the desirable high input impedance of the device |
SiO2 |
22. Range of varying CT varactor |
pf to 100 uf |
23. Underlying software in a computer |
Operating System |
24. Amplifier that provides the least distortion |
Class A |
25. Bleeder resistor is connected |
Across the capacitor in the power supply |
26. An advantage of a magnetic disk over a magnetic tape in data retrieval and storage |
Data can be stored and retrieved easily with disks |
27. Another name for memory |
Primary storage |
28. Gunnplexer is used as a |
Communications device |
29. In a spectrum analyzer, an AC signal having only one frequency looks like a |
Single pip |
30. A hot-wire ammeter |
Can measure ac as well as dc |
31. _____ amplifier can drive an output signal from 1 W to 10 W |
Power |
32. Response time of an LCD is |
100 ms to 300 ms |
33. Turn-on time of High power SCR |
10 to 25 us |
34. Computer signals that are sent through telephone lines is in the form of |
Microwaves |
35. Actions that separate word processing from typing |
Edit,format,store |
36. If 2 waves have the same frequency and amplitude but opposite in phase, the composite wave is |
Zero |
37. Highest resolution CRT |
SVGA |
38. Person of role of change |
System Analyst |
39. Error messages that are produced by a compiler |
Diagnostics |
40. The raid method of duplicating data is made with |
Data mirroring |
41. A program that is made by a programmer who is employed by an organization is owned by |
The organization |
42. Built-in protection for a computer |
User profile |
43. The purpose of a bleeder resistor is to |
Prevent people from shock |
44. To measure power supply voltage being used by a circuit, the voltmeter |
Is placed in parallel with the circuit that works from the power supply |
45. Advantage of alkaline over zinc carbon |
Alkaline works at lower temperature |
46. What happens when the voltage exceeds the avalanche voltage of the scr? |
The junction will conduct |
47. When the scr fires, the transistor junction that will conduct is |
Both NPN and PNP |
48. You have an unlimited supply of 1W 1000 ohm resistors and you need 500 ohm resistance rated at 7W or more. This can be done by assembling |
4 sets of - Two 1000ohm resistors in series and then connecting these 4 sets in parallel |
49. A primitive device used to measure current |
Galvanometer |
50. A software which is in the public domain |
Freeware |
51. Which of the following uses graphical icons |
GUI |
52. The reverse resistance of SCR is |
100 Kohms and up |
53. Lists the deadlines and schedules of a project |
Gantt Chart |
54. Language small talk is |
Object Oriented |
55. If wing verification with a find and replace feature is called |
Conditional Replace |
56. What does a reading of a large or small resistance in a reverse/forward bias condition indicate when checking a transistor using an ohmmeter? |
Faulty device |
57. The current through the channel of a JFET is affected by the following except |
Transconductance |
58. Why is mercury cell seldom used? |
It will pollute the environment when discarded |
59. Energy is usually measured in terms of |
Kilowatt-Hour |
60. Most common roll-offs of op amps |
-20dB/decade or -6dB/octave |
61. Interactive solar power system |
Allows a homeowner to sell power to the utility |
62. The reel that is changed in the magnetic tape unit |
Supply reel |
63. Connects ip networks over a wide geographical area |
Backbone |
64. An empty shell in which an organization can install a computer is called |
Cold Site |
65. A computer that interacts with a television set |
Net Computer |
66. For which of the following frequency ranges can coupling of bypass capacitors can no longer be replaced by the short-circuit approximation |
Low Frequency |
67. When all access and processing occurs only in one location, the computer system is said to be |
Centralized |
68. How can class C amplifiers be linearized? |
Class C amplifiers can never be linearized |
69. The following are the functions of a fuse except |
To make sure that there is enough current for the appliances to work |
70. Records the history of the user from site to site |
Click Stream |
71. Weston Cell is used as |
Voltage Reference |
72. Refers to a group of like customers is called |
Vertical |
73. A system of computers and data storage are placed in dispersed locations is called |
Distributed data processing |
74. One advantage of an electromagnet meter over a permanent magnet meter is that |
The electromagnet meter is more rugged |
75. Power surge in a power supply is caused by |
Capacitor has initial charge |
76. What is the characteristic of the positive electron pole |
It has fewer electrons than the negative pole |
77. Alkaline cells are: |
Generally better in radios than zinc carbon cells |
78. Wiring diagrams can be seen in |
Repair/Service manual |
79. A diode detector |
Is employed in some radio receivers |
80. The op-amp gain feedback |
Oscillation |
81. The inductance of a coil can be varied by |
Varying the net core permeability |
82. In an oscillator circuit, feedback should be |
Just enough to maintain oscillation |
83. Editing of each individual module or program is called |
Unit testing |
84. NICAD batteries are most extensively used in |
Handheld radio transceivers |
85. In multiprogramming, two or more programs can be executed |
Concurrently |
86. Different sounds of a musical instrument are primarily the result of |
Difference in waveshape |
87. Monitoring data as a by-product of activity that generates data is |
Source data automation |
88. Movement of holes in a semiconductor results in |
A certain amount of electric current. |
89. Inductive susceptance is |
Negative imaginary |
90. A limitation of magnetic tape as a method of storing data |
Organized sequentially |
91. Arrangement which most of the processing is done by the server |
Client/server |
92. Good engineering practice usually requires… be made |
From resistors that are all the same |
93. Computer professionals who writes and tests software is called |
The programmer |
94. When a p-n junction is reverse biased, all of the following is affected except |
Frequency |
95. A direct short circuit the terminals of a battery |
Can cause an explosion |
96. When is the counters return to zero at the dual-slope method of conversion |
At the end of the charging of the capacitor |
97. Chemical energy in a battery or cell |
Changes to kinetic energy when the cell is used |
98. The input impedance of a MOSFET is |
Extremely high |
99. An advantage of ac over dc in utility application |
Ac is easier to transform from one voltage to another |
100. Ferromagnetic material |
Concentrates is flux within its core |
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