Electronics Engineering Review Materials: Section 1 Module 13

This is the Section 1 Module 13 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.

Electronics Review Materials: Section 1 Module 13

This is the Section 1 Module 13 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 13

1. High voltages are better than low voltages for long distance electric power transmission because

I2 R losses are lower

2. Opposes magnetic flux

Reluctance

3. A form of microwave electron tube is

Klystron

4. A transformer quadruples the AC voltage. The primary to secondary impedance ratio is therefore

1:16

5. A converter that converts AC

Cycloconverter

6. The input is low so the output is low

OR

7. Odd parity checker

XOR

8. Device used as comparator

Op-amp

9. Class A amplifier operates in

-360

10. In OR gate the output will be low if

All inputs are low

11. Signal plus noise to noise ratio is often specified when stating a receivers.

Sensitivity

12. Extent to which an oscillator maintains a constant frequency is called its

Stability

13. What law states the the ratio of the thermal conductivity to the electric conductivity is proportional to the absolute temperature of all metals.

Wiedemann-frenz law

14. Optoisolator

Led and a photodiode

15. Time required for a robot arm to move from one point to another

Cycle time

16. Highest input impedance

Common collector

17. The output electrode of BJT is usually

Collector

18. Unit for magnetic field

Maxwell

19. Used to measure a unknown inductance with capacitance standard

Maxwell oscillator

20. Technique in shared network the avoids missing printouts of several networks

Spooling

21. Which of the following devices has high input impedance. Bjt, diode,fet,mosfet?

MOSFET

22. What is the speed of motor with 6pole and 60cycles/second frequency

1200rpm

23. Maximum reverse voltage

Peak reverse voltage

24. Device that converts visible lights into DC is

Photovoltaic cell

25. An element of matter

Has a unique number of protons

26. Motor that has high torque

Series

27. Ammeter connect in a device need to be in

series

28. Internal resistance of ammeter

Zero

29. Need an internal power source

Ohmmeter

30. A +1 hole for proton and electron is

A charge of -1 unit

31. 1 coulomb equals

1A

32. 1/5 the range of wifi

Bluetooth

33. Frequency multiplication is possible with a semiconductor diode because the diode is

Non linear

34. In a power supply, resistor are sometimes connected in series with the diode in order to

Protect the diode against surge current

35. Magnetic lines of flux are generally

At right angle to the flow of current

36. Kind of oscilloscope that stores display for a long period

Storage oscilloscope

37. Frequency in Hertz

One divided by period of second

38. The oscillating frequency of a quartz crystal can be varied slightly by

Placing a small variable capacitor across the crystal

39. IC is usually made of

Monolithic

40. You have an unlimited supply of 1 watt, 1000 resistors and you need a 500 resistance rated at 7 W or more. This can be done by assembling

4 sets of 2 resistor in series and connecting these four sets parallel

41. To discharge filter capacitors after the supply is shut off

Bleeder resistor

42. Disadvantage of MOSFET

Easily damage by electrostatic discharge

43. A utility meter generally measures

Kilowatt hour

44. The schematic symbol for an op-amp

Triangle

45. Advantage of AC compare with DC as a source of utility power is that

it can be easily step up or step down in voltage

46. One way to keep interelectrode capacitance to minimum is to

Keep wire leads short

47. Where 1.2 henries of inductance can be used

Ferromagnetic pot core

48. The frequency oscillation of Wein Bridge Oscillator

½ pi RC

49. Number of Degree of freedom of manipulator adding a wrist

3

50. Robot arm

Manipulator

51. If two wave have the same frequency and the same amplitude but opposite phase the composite wave is

Zero amplitude because the two waves cancel each other

52. The inductance of a air core coil is affected by the following except

The frequency

53. Difference of magnetic disk to magnetic tape

Data in disk can be retrieve and stored faster than tape

54. To create an N type semiconductor

Add donor impurity

55. Size of proton compared to electron

1836 times

56. Printer and monitor is considered as

Output device

57. Image resolution is an important specification in

computer monitors

58. Most efficient voltage regulator

Switching regulator

59. Converts light to digital signal and gives feedback information in robotic system

Vision system

60. Welding process when the heat generated melt the tips of an electrode and the base metal

SMAW

61. Two AC bridge adjustment where the first adjustment changes affect the other adjustment ins special way, while changing the second adjustment does not affect the first one

Orthogonal nulling

62. Power supply filter gives the smallest ripple voltage

Multi LC filter

63. Simplest type of converter

Half wave converter

64. Other term for voltage amplifier

Pre-amplifier

65. Motor operating in heavy loads

Polyphase motor

66. Basic description of semiconductor

-variable conductive properties of some materials

67. Colpitts circuit is an

Oscillator

68. Motivating input signal in control system that not depends on the output signal

Command input

69. Signal in computer system which is the difference between feedback and reference signal

Actuating signal

70. Another term for memory

Primary storage

71. In a purely resistive impedance

Zero reactance

72. How electron flow in orbitals of an atom

Electron configuration

73. The net electric charge in an isolated system remains constant

Law of conservation of charge

74. In a step up power transformer

The secondary voltage is larger than the primary voltage

75. Center tap usually exist in

Balanced winding

76. High sensitivity VOM

Measure high resistance

77. Known as the envelope of work a robot.

Range of axis motion

78. When a several resistance are connected in series

the current is the same through each one

79. Selenium usually use in

Photocell

80. Not advantage of IC over discrete device

Low gain

81. The power density of IC provide

High speed

82. Filter that separates audio frequency signal on each other, one into the tweeter and the other to the woofer

Cross over network

83. A form of communication in which either party can instantly interrupt the other at any time is called

Full duplex

84. Use of lead acid cell

Use in interruptible power supply

85. For a given value of capacitance, as the frequency goes down, the reactance

Gets more and more negative

86. Advantage of laser printer over dot matrix printer

Superior image quality

87. High sensitivity substance usually use

Can be used as permanent magnet

88. Comparator with hysteresis

Schmitt triger

89. Synchronizing pulses in video signal

Keep the image from “tearing or rolling”

90. The following is needed for an AC generator to provide power except for

natural energy source

91. Advantage of Full wave over half wave rectifier

conduct signal all over the input and operates on the whole cycle

92. Advantage of parallel data transfer over serial transfer is

higher speed

93. Which comes first in the planar process of fabricating ICs?

Crystal growth

94. The force between a magnet and a piece of ferromagnetic metal that has not been magnetized

Never repulsive

95. EMF induced in inductor except

if the field core and coil is moving in same velocity

96. Advantage of rheostat against potentiometer

Rheostat can work at high current

97. Minimum number of diodes in a half wave rectifier

1

98. In a machine vision system enhance sensitivity often involves a sacrifice in the

image resolution

Section 1 Modules: Reviewers in Electronic Engineering


Post a Comment

Contact Form

Name

Email *

Message *

Powered by Blogger.
Javascript DisablePlease Enable Javascript To See All Widget