This is the Section 1 Module 17 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 1 Module 17
1. If you want the circuit to be in stable manner while load impedance varies, what coupling method is ideal to use
2. Advantage of pneumatic actuator
-All of the above
-quick response
-clean and no oil leaks
-low cost and power operations than hydraulic actuator
3. An ac bridge used to measure capacitance and its losses.
Wein Bridge
4. A four-arm ac bridge used to measure inductance against standard capacitance.
Maxwell Bridge
5. A type of dip meter, where microammeter is connected in the grid.
grid-dip meter
6. What is the output when R=low, S=low, Enable=high, preset=low, clear=high
low
7. The new IBM supercomputer that can operate at 7072 trillion calculations per seconds that is known as the fastest supercomputer.
Gene Blue/L
8. A cable free technology that let people surf the Web even when at starbucks, seattles and Malls when they are near the antenna
WiFi
9. How to increase the Forward voltage blocking capability of SCRs?
by connecting in series
10. What is the power density of the field strength meter that expresses the field strength?
0.001 to 2000 microwatts/sq.cm
11. Mass of an electron
9.109x10-28g
12. Noise generator is needed when evaluating characteristic of noise of the amplifier
13. Ceramic-disk capacitor is specifically has capacitance value of 100 microFarad.
14. Which is not a factor in electrical power of solar panel in direct sunlight.
ac voltage applied in panel
15. A memory element used in clocked sequential circuits.
Flip Flop
16. Robotic system that protects people from danger.
Guard
17. What is operational amplifier?
-current amplifier
-voltage amplifier
-current-voltage amplifier
-Any of the following
18. 741C oscillator uses active load resistor
19. 8086 processor is 16 bit
20. In a PNP transistor amplifier, power supply is connected when with respect to emitter.
when collector is negative
21. Most common mechanical configuration of industrial robots.
articulated arm and cylindrical
22. SCARA robots has how many axis
4
23. Actuator type that is the most messy
hydraulic
24. A variation of TTL that uses schottky barrier
STTL
25. Not a classification of computer
Maxicomputer
26. What is the reason why cells can store more in a given area when dynamic cells are used?
they are small
27. The number of commutator segments is equal to no. of coils.
28. Advantage of methanol over hydrogen
easier to transport
29. Value of red, red, red, gold
2.2k, ±5%
30. Input to become undefined output in NAND
LOW, LOW
31. Convert AC from small DC source
Inverter
32. Need two or more high input for high output
OR gate
33. Voltage required to conduct SCR
Minimum triggered voltage
34. Same as SCR but bidirectional
SBS
35. Not commonly use in ac power supply
rectifier
36. Flow of current without bias
diffusion current
37. System used in telephone system to measure distance from ground fault
Varley loop
38. What is Diac?
two terminal, bidirectional
39. Crystal liquid that changes color in temperature
cholesteric
40. When the deflecting increases. The controlling increases
41. Motor used in sudden increase in load
commulatively compound
42. Advantage of hydraulic
can carry heavy loads
43. Not true in aircore over ferromagnetic core
air concentrates magnetic flux
44. Discovered electromagnetic induction in 1831
Michael Faraday
45. Determine the polarity of the voltage
Lenz’s law
46. Displays the indication in spectrum analyzer
CRT
47. Internal resistance of voltmeter to be accurate
as high as possible
48. Force is directly proportional to strength
coulomb’s 1st law
49. RF instrument, means of dip
dip meter
50. What is the purpose of bleeder resistor?
to drain the voltage in filter capacitor
51. Medium of communication in computer system that uses pneumonic.
machine language
52. Theorem that replaces the voltage by current in parallel with the resistance.
Norton’s theorem
53. Typical resistance of strain gauge is 120 ohms
54. The size of file in the computer is measured by byte
55. Program that has the ability to move a robot within a range but without specific path.
point to point program
56. Can use in different ways except -keyboard
57. Voltage applied to the oscilloscope in horizontal deflection.
sweep
58. Use to access world wide web
browser
59. Process of asking remote terminal when needs to send data
polling
60. Used to measure reflection
reflectometer
61. To conduct SCR, gate is more positive than cathode
62. Sensor has ADC, DAC, processor
smart sensor
63. Logic gates that has two or more input, when there is one or more high input, then high output.
OR gate
64. Measure of electron packed in a given volume
electron density
65. In full bridge converter, regenerative breaking occurs when firing angle is past+90 degrees
66. Insulator damage and current flows from core to earth or to sheath
earth fault
67. Interval from one point of one cycle to identical point of other cycle.
period
68. Time taken in computer to reply
response time
69. Register that access program variables
stack
70. What is the purpose of zero adjust?
to compensate differing battery voltage
71. After weld interval, it goes to ______ interval where electrode pressure is maintained.
hold interval
72. After squeeze interval, next is ______
weld interval
73. What comes after hold interval ______
standby
74. When is the first systematic report of liquid crystal?
1888
75. Which determines the viscosity
resistance to flow
76. Does not have in oscillator
negative feedback
77. Instrument that displays signal strength with different frequencies.
spectrum analyzer
78. Most rugged indicating instrument
moving iron galvanometer
79. Type of network usually own/build by single company or governmental organization.
private data network
80. Uses 24 satellites and the most popular modern navigational aids.
GPS
81. Not used in biometry to identify human
texture of skin
82. The ENIAC can perform _____ additions and _____ multiplications in one second.
5000/500
83. Where magnetic field is strong?
magnetic pole
84. If plate distance decreases and all things constant, the capacitance increases.
85. A circuit that has no feedback and Is not self correcting.
open-loop system
86. Devices used to measure moving hot iron tips and slabs.
infrared and ultraviolet devices
87. A 543 gates belongs to what category of integration
Small scale integration
88. Difference between JFET and MOSFET
MOSFET can handle a wider range of bias voltage
89. The period before the SCR conducts
firing delay
90. The period before the SCR conducts
firing delay angle (nagkaiba pa)
91. When triggered once it stores one of the two condition for digital circuit.
Latch
92. Oscillator for microwave frequencies
GUNN diode
93. Uses 25 volts and used for industrial purposes
HLDTL
94. What are the fundamental characteristics of Computer
-speed
-reliability
-storage capability
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