This is the Section 1 Module 14 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 14
1. In parallel inductance, if there is no mutual inductance, it adds up like:
Resistance in parallel
2. A bits per second is a unit of:
Data speed
3. The henry is a
A very large unit
4. A piano sounds different than a saxophone, even if the notes are the same frequency, because of a difference in a:
Waveform
5. A gigabyte is a unit commonly used as a measure of
Data storage capacity
6. A world wide web:
Is a part of the internet
7. One coulomb is equal to the electron
6.24x108
8. A protocol ensures that:
Computers can exchange data
9. In robot Transmission system when the ratio of gear is constant
Chain driver
10. Elements can joined together to form
Compound
11. In biometrics, it is used to identify 1. Authentication 2. Identification 3. Verification
1,2,3
12. Reciprocal of reactance is called
susceptance
13. Sony Humanoid, Robot that can dance, react with the environment, stand when fall
ORIO
14. Memory that can easily accessed, but not written over, is called:
ROM
15. Supercomputers measured in computer
FLOPS-(floating point operation per seconds)
16. Mostly used in semiconductor
Gallium Arsenide
17. CMOS IC is
Employs N – Channel and P – Channel fet in a single chip
18. Most efficient method of damping in indicating instrument
Eddy current damping
19. Logic Circuit that used as even parity checker
X – NOR
20. Common Lab multimeter cannot measure
Frequency
21. Ammeter used for measuring
Current
22. Which does not affect the resistance
Mass
23. When you place a bar of iron inside a cylindrical coil of wire, and then run DC through the wire. You can produce an:
Electromagnet
24. The rate of change in a quantity is called a:
Derivative
25. An OP- amp LF157A
BIFET OP – amp
26. A mobile phone that can beam data at 144 kilobits per second and perfect use in video and music
3G
27. A reactance modulator produces :
FM
28. Conversion of AC to DC
Rectifier
29. The forward base bias in a transistor is increased until the collector current levels off. This condition is:
Saturation
30. The logic of X + Y = Y + X indicates the
A commutative property
31. A type of FM detector that has its limiter built in is:
Ratio detector
32. High power low voltages rectifier
Full wave center-tap arrangement
33. Advantage of DSP(Digital Signal Processing)
High S/N ratio, immune in atmospheric noise, enhanced fidelity and improved intelligibility
34. In an AC, when the frequency becomes zero(dc) the reactance is
Becomes large negatively
35. Packet is
A piece of file sent over the net
36. The standard unit of inductance is the
Henry
37. AC utility mains usually
Sinusoidal
38. Physiological Biometry use to recognize a person by:
Fingers and hand, retina and iris, face
39. The difference between two ac signal with the same frequency but different in phase by exactly 1/10:
36 degrees
40. Boolean algebra is:
A useful tool in digital logic circuit design
41. A motherboard contains a:
a microprocessor
42. In a rectifier diode, current flows for approximately how much of the AC cycle?
180 degrees
43. If the impedance is resistive:
The reactance is zero
44. Another name for joules per second is:
Watts
45. A good type of resistor to use in radio amplifier is:
Carbon composition
46. A logic circuit has an output 0 when the input is 1, and vice versa:
A NOT gate
47. In an NPN bipolar transistor circuit:
The DC collector voltage is positive
48. One of the main shortcomings of MOSFETs is that they:
Are easily damaged by static electricity
49. In a parallel-resonant LC circuit, the impedance is:
High and resistive
50. In a resistance/inductance (RL) series circuit:
Current lags voltage by less than 90 degrees
51. Electrostatic forces can be measured to directly indicate:
Voltage
52. In three-phase ac, the difference in phase between any two waves is:
120 degrees
53. A cell that can be recharged, and therefore used again and again, is called:
a secondary cell
54. The capacitance between two parallel sheets of metal is:
Inversely proportional to the distance between them
55. What is an advantage of digital signal processing (DSP)
improved signal-to-noise operation
enhanced fidelity
improved intelligibility
56. The electron volt is a unit of
energy
57. Wave X leads wave Y by 270 degrees. This would be better expressed by saying that:
wave X lags wave Y by 90 degrees
58. Which type of amplifier circuit has the transistor or FET biased exactly at cut-off or pinch-off when there is no input signal?
Class B
59. The main factor that limits the frequency at which a P-N junction will rectify is the:
Junction capacitance
60. The rms value for an ac wave is also sometimes called the
Effective value
61. In a parallel combination of light bulbs, if one bulb socket totally shorts out:
The circuit had better have a fuse or a circuit breaker
62. Admittance is a quantity expressing:
Ease with which a circuit passes ac
63. In a NPN bipolar-transistor circuit:
The dc voltage on collector is positive
64. An example of a device that converts electrical energy into visible radiant energy is:
A light-emitting diode
65. Set of program lies between program software and computer hardware
Operating program
66. What is the difference of half-wave and full-wave rectifier with the same secondary voltage
Peak output voltage
67. What is the simple filter?
Capacitor parallel to the rectifier output
68. Advantage of ethanol over hydrogen as fuel cells
Easier to transport and store
69. A regulator that dissipates less power therefore generates less heat
Switching regulator
70. The regulator parallel to the load
Shunt regulator
71. When a photodiode is not use a photovoltaic cell, it is used as:
Reversed bias
72. Which states the current is directly proportional to the voltage and inversely proportional to the resistance?
Ohm’s Law
73. A law that states that the polarity of the induced voltage will oppose the change in magnetic flux causing the induction.
Lenz’ Law
74. The efficiency of the full-wave bridge type rectifier
81.2%
75. Compounds use in microprocessor used in CRAY-1 supercomputer by seymour cray
Gallium Arsenide
76. Composed of two inputs (inverting and non-inverting) and one output.
Operational amplifier
77. It is used to display the waveform of the input signal.
Cathode ray oscilloscope
78. Which of the following is not a type of a capacitor?
Tantalum
- Air-variable
- Ferrite
- Mica
79. An LC oscillator circuit in which the tank coil has an intermediate tap
Hartley oscillator
80. The compensating capacitor prevents _______in op-amp
Oscillation
81. This type of oscilloscope use sampling technique for the frequency above the normal range
Sampling oscilloscope
82. The Holes flow is from:
Plus to minus
83. It is responsible for the movement of the manipulator in Robotic system and various axes in a working cell
Actuator
84. The potential energy change by adding electron to gaseous atom or iron in their ground state
Electron affinity
85. In a pure inductance:
The voltage lags current by 90 degrees
86. It is produced by electric current rather than pure magnet
Electromagnetism
87. This is a graphical way to summarize the conditions under which equilibria exist in different phase of matter
Phase Diagram
88. The use of bleeder resistor
- none of the choices, protect the diode from current surge, protect the diode from voltage transients, use as voltage regulator
89. computer that deals with discrete data
Digital Computers
90. Amplifier that is used for pulse generation
Class-D amplifier
91. Voss mcCartny noise generator produces sequence of randomly modulated__________.
Squared Pulses
92. A 95.7Mhz is in range with FM broadcast band and in range with VHF radio spectrum uses what kind of core for an inductor
Air core
93. Non inverting amplifiers has:
Large closed-loop input impedance
94. The computer fundamental characteristics of speed, reliability and storage capability has by-products of:
Productivity, cost reduction and decision making
95. This is a linear regulator used in application requiring efficient utilization of the power source.
Series regulator
96. Transducers that are considered as low-level signal has the output voltage of:
+/-50 to +/-500mV
97. Robot programming in which the required sequence of functional and required positional movement is written in the remote computer console
Off line programming
98. It is adjustable period of time in which the oscilloscope cannot trigger, it is useful when dealing with complex waveform so as to trigger the first point of the waveform.
Trigger Hold off
99. IF you need to get a 100-ohms 10-watt resistor from unlimited supply of 100-ohms 1-watt resistor, this can be obtain by combining a resistor in series-parallel of:
4x4 series-parallel
100. Any substance at its boiling point has vapor pressure of:
One atmosphere
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