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2003 Course Audio - Video Eng. (Elective II)

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Total No. of Questions : 12] [Total No. of Pages : 3 [3664] - 209 P 946 B.E. (E & TC) AUDIO - VIDEO ENGINEERING (2003 Course) (404225) (Elective - II) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer 03 questions from Section I and 03 questions from Section II. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 5) Assume suitable data, if necessary. SECTION - I Q1) a) b) c) What do you understand by interlaced scanning? How interlace scanning reduces flicker and conserves bandwidth? [6] Describe basic principle of a colour camera with the help of suitable diagram. Explain why dichroic mirrors are used in camera optics. [6] Explain the meaning of brightness and contrast with respect to black and white pictures. What is the optimum distance for viewing television pictures. [6] OR Q2) a) b) c) What do you understand by vertical and horizontal resolution? Why is the total number of lines kept odd in all television system. [6] Explain the working of precision-in-line picture tube. State its merits over delta gun picture tube. [6] State advantages of using AM for video signals, AMSC for colour signals and FM for audio signals in TV system. [6] Q3) a) Compare NTSC, PAL and SECAM with respect to scanning specifications, video bandwidth, video modulation, audio modulation, intercarrier frequency, colour system, sub-carrier and chroma modulation. [8] b) Explain with block diagram High Level modulated TV Transmitter. [8] OR P.T.O.

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