This is the Section 2 Module 14 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 14
1. The unit henry is – a very large number
2. Adding of electrons in gaseous atoms – electron affinity
3. The Cray I supercomputer uses what semiconductor material – Gallium Arsenide
4. Unit of data rate – FLOPS
5. It is the rate of change – differential
6. Inductances in parallel is computed like – resistances in parallel
7. When two elements combine – they form compounds
8. Device which has inverting and non inverting input – op amp
9. Type of resistors used in RF – carbon compound
10. Operation of photodiodes when not used as photovoltaic cell – reverse biased
11. When X lead Y by 270 degrees – X lags Y by 90 degrees
12. High power, Low voltage – Full wave center tapped
13. WWW is – Part of the internet
14. Packets are – sent over the internet
15. LF157A is – bifet
16. A non inverting amplifier has – large close loop input impedance
17. What is measured in electrostatic discharge – voltage
18. When output is 1, the input is 0 and vice versa – NOT gate
19. GB is – commonly used as a measure of storage capacity
20. Cannot be changed – ROM
21. Determine the polarity of induced voltage in the coil – Lenz law
22. When given 100 ohms and 1W and you need 100 ohms 10W you need – 4x4
23. Pulsating signal – class D
24. Capacitance is inversely proportional as you – increase the distance between the plates of the capacitors
25. Output of Vose McCartney noise generator is – squared pulse
26. X + Y = Y + X – commutative property
27. Bps is a measure of – data speed
28. AC is – sinusoidal
29. Protocol ensures – data transfer between computers
30. Rectifier diodes – conduct current 180 degrees
31. Oscilloscope that uses sampling technique – sampling oscilloscope
32. Even parity checker – XNOR
33. RL series – current lags voltage less than 90 degrees
34. Purely inductive – current lags voltage by 90 degrees
35. Inductance is measured in – henries
36. 2 important components in as generators – permanent or electromagnets and armature windings
37. When a bar is placed inside a coil and a DC current is run through it – electromagnet
38. When permanent magnet is replaced by……. – electromagnetism
39. Difference of full and have wave rectifiers given the same secondary voltage – peak output voltage
40. Motherboard contains – microprocessors
41. Advantage of methanol over hydrogen – easier to store and transfer
42. Humanoid of sony which can dance – ORIO
43. Bleeder resistor in circuits – none of the above
44. Biometry is 1. Identification 2. Verification 3. Authentication – 1,2,3
45. Physiological Biometry is – 1,2,3
46. Computers are – 1,2,3
47. Disadvantage of CMOS – electrostatic damage
48. Wave with same amplitude but is 1/10 different in phase differs by – 36 degrees
49. Boolean algebra – is used in digital logic design
50. Controls the manipulators – armature
51. Ammeter measures – current
52. Standard lab multimeter does not measure – frequency
53. Advantage of DSP – all of the above
54. Compensating capacitors prevents op amp – oscillation
55. When forward base bias is……. Collector levels off – saturation
56. Reactances in capacitors, when frequency goes down – purely large negatively
57. Transistors or FET are biased at cutoff/pinch-off without input – class B
58. NPN bipolar transistors – DC voltage collector is positive
59. Transducers with low output signals have output of - ±50mV & ±500mV
60. Dissipates less power and generates less heat – switching regulators
61. Admittance is – the ease of letting in ac
62. The reciprocal of reactance – susceptance
63. Regulators in parallel with load – shunt regulators
64. Simplest Filter in power supplies – capacitor is parallel with rectifier output
65. Converts ac to dc – rectifier
66. Piano and saxophone differs in sound given the same frequency because – waveforms are different
67. FM detectors with built in limiters – ratio detector
68. Visual representation of signals – cathode ray oscilloscope
69. At a frequency of 95.7Mhz ideal inductor to be used is – air core
70. CMOS IC – consists of N-channel and P-channel FETs
71. Number of electron in 1 coulomb – 6.24x10^18
72. Holes moves – from plus to minus
73. Diagram where state of equilibrium of phases of matter – phase diagram
74. Which is not a type of capacitor – ferrite
75. At a material’s boiling point, the pressure is – 1 atm
76. Converts electric to light – LED
77. In a parallel resonant LC circuit, the impedance is – high and resistive
78. In ac, impedance is resistive – when reactance is 0
79. Tuned circuit with tapped coil – Hartley oscillator
80. Current is directly proportional to voltage and inversely proportional to resistance – ohm’s law
81. In parallel light bulbs, when 1 short out – circuit must have a fuse or circuit breaker
82. Most efficient in using the supply – series regulator
83. Frequency in PN junction…………. – junction capacitance
84. In 3 phase circuits the difference of 2 waves is – 120 degrees
85. Joules per second is – watt
86. Electron volt is a measure of – energy
87. The time when the oscilloscope does not trigger – trigger hold off
88. Computer that handle discrete data – digital computers
89. Rechargeable battery – secondary cell
90. Reactance modulator – FM
91. Bridges application program and computer hardware – operating program
92. Programming on remote computer – offline programming
93. Equal gears ratio – chain ……
94. Which does not affect resistance – mass
95. Maximum efficiency of full wave bridge type rectifier is – 81.2%
96. Most effective damping in indicator instruments – eddy current damping
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