Electronics Engineering Review Materials: Section 2 Module 17

This is the Section 2 Module 17 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 17

Question	Answer
1. Ultra fast and long range wireless that connects homes and businesses where there is no cable connection available	WiMax
2. To measure spin electronics	Spinometer
3. Most common analogue meter	D’arsonval
4. Measures incident wave and reflected waves	Reflectometer
5. Movements of robotic arm: 1. Cartesian, 2. Polar, 3. Cylindrical, 4. Articulated	1,2,3,4
6. Two most popular RF oscillator	Colpitts and Hartley
7. Maximum efficiency of transformer	Copper loss equals constant loss
8. Photovoltaic silicon cell	0.6
9. Ripple rejection of three-terminal regulator	0.1%
10. Most popular thyristor	SCR
11. Firing angle of SCR for power density	95%
12. Large transformer efficiency	95%
13. “bang bang” control	On-Off
14. Equivalent open resistance; open voltage circuit	Thevenin’s law
15. Arithmetic operation more negative to the capacity of the output register	Underflow
16. Arithmetic operation more than the capacity of the output register	Overflow
17. Difference of measured output over desired output	Error
18. Permanent magnet current-carrying coil	Permanent magnet moving coil instrument
19. Ultrasonic welding frequency	10-75 kHz
20. Instrument for electrically charged bodies	Electrostatic instrument
21. Greater noise resistance compared to RTL	DTL
22. What will happen to the eddy current loss if load of transformer increases	Nothing will happen
23. Rating of transformer if zero efficiency	No load
24. Invented computer that uses binary numbers and stores information	John Van Neumann
25. Computer that connects the user’s computer system to the internet	Server
26. Maintains physical position for motor control	Servo motor
27. Parameter that opposes the magnetic flux	Reluctance
28. Element for CRAY 1 supercomputer	Gallium arsenide
29. 400Hz, AF, the induction forms a:	Toroidal
30. Arc welding current	50-450 A
31. Fixed negative voltage regulator	79 XX
32. Fixed positive voltage regulator	78 XX
33. Generates noise for testing purposes	Noise generator
34. To withstand noise	Noise immunity
35. Most costly	Hydraulic
36. Converts binary to ASCII	Code converter
37. Elements with 4 valence electrons	Elemental semiconductor
38. Rapidly flashing logic probe indicates:	Rapidly changing logic activity
39. Air in dielectric	Has low loss
40. Thyristor is also known as:	Gas-filled triode
41. Maxwell’s bridge measures accurately	Medium inductances
42. In constructing transformers, primary and secondary windings	Tight magnetic coils
43. Copper material of primary winding	Almost equal to the secondary
44. Saturable reactor	Magnetic amplifier
45. Small dc current cause reactance of a large ac winding	Saturable reactor
46. Dynamometer that measures high current	Current transformer
47. Instrument for electromagnetic induction	Induction instrument
48. Instrument for fixed coil to a soft iron	Moving magnet instrument
49. 4th economic key	Information
50. Step-recovery diode	Charge-storage diode
51. Robot “hand”	Gripper
52. Intervals for automated welding	5
53. Unsaturated logic gate	HTL
54. Advantage of magnetic disk to magnetic tape	Stores data rapidly
55. Equivalent voltage for voltage sources w/ series resistance parallel to each other	Millman’s theorem
56. Total resistance of resistors in series	Greater than the highest resistance
57. Inductance and Q of inductor	Hay bridge
58. Volume control for stereo compact disk player	Audio-tape potentiometer
59. “busing” for pulse generator, switching circuits	Tri-state buffer
60. For op-amps to be used as buffer	Vout=Vin
61. Dielectric in oscilloscope	Electrostatic deflection
62. Used for oscilloscope deflection	Electrostatic deflection
63. Playback robots with continuous path control	Walk-through programming
64. Damping for ammeter	Eddy current damping
65. Common to oscillator, operates in negative reverse breakdown region	Tunnel diode
66. Three state buffer from 0-1 output	OE is set to logic 1
67. In TTL circuits, unusable gate in logic circuit	Force the load to HIGH
68. Main program for operating systems	Kernel
69. Icon used for display	Extension
70. Circuit for very low resistances	Kelvin double circuit
71. MOSFET input impedance	Extremely high
72. Crowbar circuit	Has an AC overvoltage protection
73. Two conditional state	Digital electronics
74. Sample circuit in voltage regulator	Voltage divider network
75. Change in memory	EPROM
76. Edge timing on multiple clock inputs	Clock skew
77. Similar on the primary and secondary windings	Voltage per turn-ampere turns
78. Largest power dissipating devices	Water cooling
79. Coulomb of charge of electrons on a given point every second	1 ampere
80. Distribution of electrons on the orbital of an atom	Electron configuration
81. Period of phase	1/360 of a cycle
82. NPN transistor	All of the above (RF amplifier, audio amplifier, switching circuits)
83. Most efficient voltage regulator, high current high voltage applications	Switching regulator
84. At low frequency, transformer works poorly because:	Magnetizing current will be very high
85. Air gaps in transformer core	Increases the magnetizing current
86. Torque remains constant as load changes	Torque control
87. Weak signal amplifier, most important factor	Noise figure
88. Which describes an Armstrong oscillator	From the output to the input through the transformer
89. Internal clamping diode on the input of the logic circuit	To minimize the negative ringing effect
90. Transmission system of robots, constant-gear ratio	Chain drives
91. Linear electronic voltage regulator	Regulator in which the conductor in the control varies in direct proportion to voltage or load current
92. Moving iron ac ammeter	Different number of operating coils
93. Tapped coil in a tuned circuit	Hartley oscillator
94. Disadvantage of mercury cells and batteries	Destructive to the environment

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

Section 2 Modules: Reviewers in Electronics Engineering

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