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Module: ELEC 28 Total questions: 73 Total recorded: 73
Question Answer
1. Capacitance is not affected by: Plate Thickness
2. To increase speed in processor limited
operations in sorting out small tables one
must?
Add cache memory
3. To increase speed if processor is limited
by 1Mb of memory one must?
Add main memory
4. Ideal transformer has? No core loss, no winding resistance and infinite
permeability (all of the choices)
5. GaAs is used in LEDs because? It emits more light
6. Light from a GaAs LED is in what range? Infrared
7. Computers that deal with discrete data
are called?
Digital computers
8. Capacitor terminology that is used to
indicate power factor, loss factor and
dielectric loss is what?
Tangent of the loss angle
9. An AC bridge that is used to measure air
capacitance of two air capacitors is
called?
De Sauty bridge
10. In microwaves, it is used as an oscillator
that operates within the range of 10
1000 GHz is?
IMPATT diode
11. In tape recording the commercial
standard is?
Nine-track format
12. The Maxwell-Wien Bridge is used to
measure what?
Inductance
13. In tape recording, the time to move from
one sector and read the data is called?
Access time
14. In tape recording, the time it takes to
move from one location to another is
called?
Seek time
15. In tape recording, the time it takes to spin
one sector is called?
Latency time
16. A type of meter that is used to measure
only direct currents?
Permanent Magnet type
17. Periodic waveforms possessing half wave
symmetry has no?
Even harmonics
18. It is a charge given to a battery after it istaken out.
Bench charge
19. The efficiency of a single photovoltaic cell
is?
20 to 30%
20. It is a coding technique used to code data
in an 80 column by 12 row cards.
Hollerith Code
21. What do you call the minute and rapid
fluctuations in capacitance?
Scintillation
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22. LASCR operates as a? Latch
23. The CMRR of an ideal op-amp/diff-amp
is?
Infinite
24. What is the output of an ideal diff-amp if
both of the inputs has equal signals
Zero
25. The maximum ambient temperature forEIA precision resistors is? 125 deg C
26. In IC fabrication, it is used to clean out
organic substances.
Acetone
27. The typical range of Zener voltage is? 24 to 200 V
28. In computers, 6M means? 6 x 10 ^20 bytes
29. In tape recording, it is denoted as the
number of bits per square inch?
Aerial density
30. Foreground processing- Runs at Real Time
31. Electrical intensity has the unit of V/m or N/C
32. Virtual Mode is also known as? Emulation Mode
33. The typical voltage value of Supertensioncables is? 33kV
34. Toroids are sometimes better than
Solenoids because?
All of the magnetic fields are concentrated in the
core.
35. An increase in resistance in a device with
respect to a change in temperature that
follows a linear behavior is called?
Temperature coefficient
36. A type of general purpose computer that
processes complex operations and runs
programs simultaneously
Mainframe computer
37. Cascading of amplifiers will? Increase the gain and increase the bandwidth38. The Wien L/C bridge is called so because? It is balanced with L and C as its arms
39. An inexpensive substance that has a
boiling point of 78K
Liquid nitrogen
40. Before illuminating LEDs must be? Reversed-biased
41. An LED is just like a _____ PN junction. Forward-biased
42. The resistance of a photodiode is ____
proportional to the illumination.
Inversely proportional
43. Applying a complex signal to a purely
inductive reactance will?
Show less distortion
44. Damping force acts only on? Moving instruments
45. What is this effect resistance is reduced
while working of VHF frequencies due to
dielectric losses
Boella Effect
46. Part of the microprocessor that executes
commands and manipulates data
Arithmetic Logic Unit (ALU)
47. Temporary data storage that utilizes Last-
In-First-Out procedures?
Stack
48. A program that lies between application Operating Program
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software and hardware is?
49. Type of static electricity formed by
rubbing fur with silk?
Resinous
50. Type of static electricity formed by
rubbing glass into rubber?
Vitreous
51. In applying a complex signals to a purelycapacitive reactance, the portion of the
input signal that is present in the third
harmonic is ____ the original signal.
One-Third
52. Generation of computers that appears
more human like.
Sixth Generation
53. All resistors except the ones that is rated
at 1/8 power rating has a maximum
allowable change of ____ in a 1000 watt-
hour load test.
10%
54. Darlington pairs are frequently used in ICs
because
They are readily formed by two adjacent
transistors
55. Emitter follower configuration is called so
because the _____follows the ___
voltage.
Base
56. Memory that is used in retrieval of
frequently read data for faster retrieval
Cache Memory
57. It is a type of capacitor that has a low
temperature coefficient and has a good
temperature and frequency stability that
is used in precision applications such as
filter applications
Mica
58. Which is not a control character? %
59. Inexpensive semiconductors such asCopper Indium Selenide (CIS) and
Cadmium Telluride has an efficiency of?
3% - 15%
60. Class of ceramic capacitors that are fixed
and are often used for bypass and
coupling applications
Class 1
61. Class of ceramic capacitors that are
temperature compensating
Class 1
62. Heavside Campbell Equal Ratio Bridge is
used to measure?
Self inductance in terms of mutual inductance
63. Hays bridge measures? Inductive impedance with a large phase angle
64. In Op-amps ____ voltage output dependson?
Zener voltage and voltage divider resistors
65. Anderson Bridge is a modification of? Hays Bridge
66. Compared to LED, one main advantage of
LCD is that it has
Extremely low power
67. Class of ceramic capacitor which includes
Barium Tantanate which uses reduced
oxidized layer or diffusion zone as its
Class 3
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dielectric.
68. Resistor that is effective for frequencies
for about 100kHz
Carbon Composition Resistor
69. Silicon is used in Zener diodes because? It has a high voltage and current capacity
70. Magnetic tape Operation in which the
read or write happens while the tape isrunning
Streaming.
71. Increase in dielectric in a vacuum is
called?
Dielectric constant, Capacivity, relative
permeability (all of the choices)
72. Non-sinusoidal waves are made up of? Different sine waves
73. Wattage rating is the maximum power
that the resistor can dissipate assuming
what factor?
Specific life, stated long term drift from its no load
value and standard ambient temperature (all of
the choices)