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Free download in PDF LED and LCD TV Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
41
What does the availability of LCD in 16 x 2 typical value indicate ?
[A]
16 characters per line with 2 such lines
[B]
16 lines per pixel with two such sets
[C]
16 lines per character with 2 such lines
[D]
16 pixels per line with 2 such sets
Answer: 16 characters per line with 2 such lines
42
Which of the following camera tube uses lead oxide (PbO) for the photoconductive target plate?
[A]
Plumicon
[B]
Image Orthicon
[C]
Vidicon
[D]
Saticon
43
A low-contrast picture in which white seems flat and lacking in detail suggest
[A]
Insufficient Scanning Width
[B]
High Gain In The Amplifier
[C]
Excessive Gamma
[D]
Low Beam Current
44
The part of the visible spectrum where camera pickup tubes have the greatest output is
[A]
Yellow-Green
[B]
Infrared
[C]
Red
[D]
Blue
45
Beam alignment magnets for the camera tube are adjusted while rocking which control?
[A]
Electrical focus
[B]
Beam current
[C]
Optical focus
[D]
Shading
46
Special effects and production switching are done by the
[A]
SEG
[B]
CCU
[C]
Sync generator
[D]
ENG camera
47
In gamma correction the is stretched by the picture tube.
[A]
White
[B]
Red
[C]
Black
[D]
Gray
48
What is the typical anode voltage for a 25-in color picture tube?
[A]
30 kV
[B]
1 kV
[C]
10 kV
[D]
30 V
49
What are the phosphor numbers, respectively, for monochrome and color picture tubes?
[A]
P4 and P22
[B]
P1 and P4
[C]
P1 and P22
[D]
P4 and P1
50
The crossover point for focusing is formed by the electron lens.
[A]
Second
[B]
Fourth
[C]
Cathode
[D]
First
40
For the operation of FET with TTL logic, the threshold voltage of FET shall be
[A]
2.2 V
[B]
4 V
[C]
-12 V
[D]
-4 V
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