LED and LCD TV MCQs | LED and LCD TV Short Questions and Answers

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Questions
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

Answer: Plumicon
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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

Answer: 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

Answer: Yellow-Green
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

Answer: Electrical focus
46 Special effects and production switching are done by the
A SEG
B CCU
C Sync generator
D ENG camera

Answer: SEG
47 In gamma correction the is stretched by the picture tube.
A White
B Red
C Black
D Gray

Answer: White
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

Answer: 30 kV
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

Answer: P4 and P22
50 The crossover point for focusing is formed by the electron lens.
A Second
B Fourth
C Cathode
D First

Answer: 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

Answer: 2.2 V

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