ELECTRONICS Module 28.pdf

7/30/2019 ELECTRONICS Module 28.pdf

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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)

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ELECTRONICS Module 28.pdf