Electronics Engineering Review Materials: Section 1 Module 19 | ECE Board Exam

(Last Updated On: March 16, 2020)

Electronics Review Materials: Section 1 Module 19

This is the Section 1 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 1 Module 19

1. The science of physical phenomena at very low temperatures, Approaching absolute zero


2. Error in signal is zero in closed loop system


3. Has high initial cost


4. Has high force actuator

Hydraulic force

5. Wasteful current (heat)

Eddy current

6. Loss in a transformer that is due to changing field

Hysteresis loss

7. Error due to observer

Observational error

8. Error due to harsh environment

Environmental error

9. A device that contains more than one diode. E.g. is FW bride type rectifier IC.

Diode pack

10. Class of amplifier that has an output voltage angle of 360o

Class A

11. I half wave rectifier, how many % the dc output voltage is the ac input voltage


12. Efficiency of transistorized class C amplifier


13. Error in voltmeter reading


14. Decrease in the value of shunt generator

Current reading capacity increased (ammeter)

15. Increase in the value of series resistor

Voltage reading capacity increased (voltmeter)

16. Disadvantage of electric actuator

All of the choices (force is limited, very little holding strength when stop)

17. Number of valence electron for stability


18. Why are the field poles and armature of a dc machine laminated.

decrease eddy current

19. Instruction in a source language that is replaced y a define sequence of instructions in the same source language.

Macro instruction

20. Transistor in which the Base is diffused, emitter is alloyed. The collector is provided by the semiconductor substrate into which alloying and diffusion are affected.

Alloyed-diffused transistor

21. Whirlwind I

20,000 instruction per second

22. First computer in 1946


23. Two region of operation of SCR

Conducting and non-conducting

24. Bipolar family of transistor with resistor at input


25. A silicon diode that exhibits a very high resistance in both directions up to certain voltage, beyond which the unit switches to a low resistance conducting state. It can be viewed as two zener diodes connected back-to-back in series.


26. The voltage decreased across the Anode (A) and cathode (K) of an SCR from non-conducting state to conducting state.

Breakover voltage

27. General term of electronic devices used to control or trigger large-power switching devices.

Breakover device

28. To control the speed of dc motor

Varying field strength

29. Autotransformer the primary and secondary are coupled

Electrically and magnetically

30. Less dissipated power and generates less heat

Switching regulator

31. Ac power supply does not have this component


32. The time required for forward voltage or current to reach a specified value after switching the diode from its reverse-to-forward-biased state.

Forward recovery time

33. Cobalt is a


34. Forces in meter instruments

Damping, deflecting and controlling

35. Graph of the Product of VCE and IC in the transistor output characteristic curve.

Maximum power curve

36. Grounded base, base terminal is common to emitter and collector


37. Error due to physical…

Parallax error

38. Transformers having ratings less than 5kVA are generally

Natural air cooling

39. Basis of operations of semiconductor Photoconductor

EHP optical generated

40. Behaves as BJT I terms of switching

Enhancement type MOSFET

41. Free carrier decrease

Decrease in conductivity but increase in resistance

42. Has doping elements of both donor and acceptor

Compensated semiconductor

43. Transistor amplifier configuration to eliminate miller effect

Cascode amplifier

44. To trigger the device using SCR in dc gen

Firing angle

45. During welding, current flow through the system

Heat subinterval

46. In testing or checking transformer, it is always in

Low voltage

47. Connected in parallel with load

Shunt regulator

48. Iron core transformer is suited for

High voltage low current

49. The capacity of a substance to become magnetized, and expressed as the ratio between the magnetization produced in a substance to the magnetizing force producing it.

Magnetic susceptibility

50. Can display waves of CRT


51. When primary of the transformer is connected in the dc output

It might burnt out

52. Characteristics of magnetic lines of force

Travels from north to south through the surrounding medium of the bar magnet

53. 3 terminal voltage regulator IC that has a variable negative voltage output


54. 7924 ic voltage regulator has

-24 V

55. To switch off the DMOSFET, the channel should be depleted. Depletion of the cannel is done by applying enough voltage across the gate-source terminal. What do you call this voltage?

Pinched off voltage

56. Carbon brushes used in dc generator because

It lubricates and polishes

57. When all leg are balance

Balance bridge

58. Why are carbon brushes preferable compared to copper brushes

To reduce sparking

59. Common IC used for positive regulated voltages


60. In a thermocouple, one produced heat and one absorbs heat

Peltier Effect

61. Is the combination of the inductance of lead and electrodes, capacitance and resistance of the junction of the semiconductor diode.

Diode impedance

62. Which is not a flip flop

Register ( choices are: RS, latch, D and register)

63. Program that Translates and then immediately executes statements in high level language.


64. Breakover device that is basically a diode

Trigger diode

65. Same characteristics as in quadrant I of SCR

Shockley diode

66. Capacitance significant when the diode is forward biased

Diffusion capacitance or storage capacitance

67. Dc-ac converter


68. Tank with input and feedback component


69. Ratio of outer layers to the sandwiched material

10:1 or less

70. An electronic switch that has the highest single-device current capacity and can withstand overloads better.


71. Can convert mechanical to electrical capacity used for heavy loads

Polyphase motor

72. Both AM and FM amplification

Class S


Server/client computing

74. Force required to counter retentivity and thus eliminating residual magnetism

Coercive force

75. The amount of magnetizing force to counter balance the residual magnetism of the magnetic material


76. Characteristic of resistive material which do not change its resistive value with respect to time


77. Defined for each of the parameters affecting bias stability

Stability factor

78. fun out is not enough


79. to prevent oscillation in pointer

by damping

80. atomic weight of 8 protons and 8 neutrons added two another neutrons


81. How many NAND gates to produce OR


82. How many times per second does an SCR is turned ON and OFF when it is operated in a full-wave phase control at a line frequency of 60 Hz.

120 (FW)

83. If a voltmeter measure high out impedance it needed

High input impedance

84. Shunt meter has ______ temperature coefficient of resistor

Very small

85. System in which th precise movement of large load is controlled by a relatively weak control signal


86. Donor impurities

AOTA (antimony, bismuth, arsenic, all of the above)

87. Configurations used in robots

AOTA (cylindrical, spherical, arm/joint, all of the above)

88. * sa scr decrease in gate


89. Power supply filter gives the smallest ripple voltage

Multisection LC filter

90. A system program used to translate directly an assembly language to machine language


91. Spectrum analyzer

Real time analyzer

92. Term used to expressed the amount of electrical energy in an electrostatic field


93. Basic FET


94. Core flux in transformer


95. The sum of all the variable divided by the total number of variable

Arithmetic mean

96. A chopper, employing alternately biased diode as a switching material

Diode chopper

Section 1 Modules: Reviewers in Electronic Engineering

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