This is the Section 2 Module 19 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 19
1. Q: Minimum Frequency a Direct – Coupled something can pass
A: 0 Hertz
2. Q: Minimum Frequency of LPF
A: 0 Hertz
3. Q: Open Circuit Silicon Diode DMM Reading
A: 0 L
4. Q: Open Silicon BJT DMM Reading
A: 0 L
5. Q: Advantage of oscillator to amplifier
A: Does not require input signal
6. Q: 1st criteria for oscillator
A: Phase Shift of 0 degrees
7. Q: 2nd criteria for oscillator
A: Loop Gain of 1
8. Q: Fixed or magnetic force on a Vane into _____ vane
A: Vane-Panel Instrument
9. Q: Something summer
A: Resistance proportional to weight inputs
10. Q: Fastest Logic
A: ECL
11. Q: Diode conducts positive while transistor reverse
A: DTL
12. Q: Family to input
A: Fan – In
13. Q: Wein Bridge employs
A: positive feedback
14. Q: Comparator with Hysteresis
A: feed to non-inverting input
15. Q: N-type D-MOSFET with positive Vgs operates in
A: Enhancement
16. Q: D-MOSFET can operate in
A: Both enhancement and depletion
17. Q: E-MOSFET
A: completely closed depletion region
18. Q: A forward biased diode produces
A: Current in the form of holes and electron
19. Q: Rarest material among choices
A: Germanium
20. Q: Used to detect near infrared signal
A: Germanium
21. Q: Fastest among choices
A: Indium Antiminode
22. Q: Used in high temperature applications
A: Silicon Carbide
23. Q: After hold process in auto welding
A: Release
24. Q: Used to help people with something.
A: Industrial Robots
25. Q: Differentiator used what as feedback
A: Resistor
26. Q: Input a step to an integrator equals
A: Ramp
27. Q: Forward Biased Diode DMM Reading
A: approx 0.7 Volts
28. Q: Diode DMM
A: 0.7 Volts
29. Q: Zero to critical frequency
A: Mid-range frequencies
30. Q: High Pass Filter
A: Above Critical Frequencies
31. Q: Determines passband
A: Critical Frequencies
32. Q: Determines Line Regulation
A: Input Voltage/Output Voltage
33. Q: What is Line regulation
A: Change in input voltage, constant output voltage
34. Q: Determines Load Regulation
A: Load Current/Output Voltage
35. Q:What is Load Regulation
A: Change in load current, constant output voltage
36. Q: Class A power amplifier ratio ____ to output power
A: input DC signal
37. Q: A zero peak detector is a type of
A: Comparator
38. Q: Components of Comparator
A: Peak Detector, Diode, Capacitor
39. Q: When does zero peak detector changes output
A: at zero crossing
40. Q: IF of AM
A: 455 Khz
41. Q: IF Frequency in Receiver
A: Difference of Local Oscillator and Modulated RF
42. Q: Mixer
A: Local Oscillator plus modulating signal
43. Q: Atomic No. of Copper
A: 29
44. Q: Difference of OLED to LED
A: Both have organic material to substitute for PN junction
45. Q: LED
A: Emits light energy when forward biased
46. Q: Advantages of LED over fluorescent
A: All of the above (longer life, less power, tska isa pa)
47. Q: What should be considered when using diode as switch
A: Reverse recovery time
48. Q: Energy required for valence electron in conduction band
A: 0.05 eV
49. Q: External Transistor of Regulator
A: Increases current capability that the regulator can handle
50. Q: Linear Regulator operates
A: All of the time
51. Q: Switching Regulator operates
A: Part of the time
52. Q: Required something
A: 1 parts per million
53. Q: _____
A: Bidirectional Trigger Diac
54. Q: Colpitts, Hatley, Clapp oscillators are example of
A: LC oscillators
55. Q: Pole in filter terminology
A: RC circuits
56. Q: Above cut-off Frequency
A: roll-off rate
57. Q: Miller input capacitance may depend on
A: Voltage Gain
58. Q: Where was ENIAC developed
A: University of Pennsylvania
59. Q:PUT
A: Turns on/off with gate to anode current
60. Q: OTA is a ________
A: voltage to current amplifier
61. Q: Single Ended Differential Input Amplifier
A: two inputs have different polarity
62. Q: OTA is controlled by
A: Bias Current
63. Q: Infrared compared to visible light
A: Longer wavelength
64. Q: Holding voltage across A-K
A: When less than, SCR is off
65. Q: How to turn off SCR
A: Interrupt anode current
66. Q: Holding Current of SCR
A: When current is below, SCR will turn off
67. Q: Output bounded comparator
A: Changes level output
68. Q: Coupling Isolated Amplifier
A: Capacitor
69. Q: Diode with Negative resistance coefficient
A: Tunnel Diode
70. Q: Quiescent point of Class A power amp
A: ½ peak input signal power
71. Q: Network that allows sharing of resources
A: Peer to peer network
72. Q: AM Demodulator
A: Linear multiplier followed by LPF
73. Q: Advantage of crystal oscillator
A: Stability
74. Q: Ideally, increase in frequency of feedback op-amp
A: Mid-range frequencies stay the same
75. Q: Inventor of ENIAC and UNIVAC
A: Eckert and Mauchly
76. Q: Which of the ff can damage a MOSFET
A: All of the above (electrostatic, excess heat, excess voltage)
77. Q: Steady state variable filter
A: 1 summing amplifier followed by 2 integrators
78. Q: Roll-off rate changes with _____
A: number of RC circuits
79. Q: What determines roll-off rate
A: Internal Capacitance
80. Q: Sallen-key filter
A: 2nd order
81. Q: Varactor
A: variable capacitor, reverse biased
82. Q: Photodiode coupled with LED ammeter reading _____ when switched to reverse bias
A: Decrease
83. Q: Generate signals with different frequency, amplitude accurately
A: signal generator
84. Q: Consideration of real diode
A: All of the above (reverse resistance, forward resistance)
85. Q: In analyzing different signals ____
A: Quadrant Capable _____
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