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Electronics Engineering Review Materials: Section 2 Module 19 | ECE Board Exam

Electronics Review Materials: Section 2 Module 19

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


11. Q: Diode conducts positive while transistor reverse


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


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 _____

Complete List of Section 2 Modules in Electronics (Q&A)

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