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1997 Course Audio-Video Eng. (Elective I)

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Total No. of Questions : 10] P1851 [Total No. of Pages : 2 [3764]- 1027 B.E. (E & TC) AUDIO - VIDEO ENGINEERING (1997 Course) (Elective - I) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer any three questions from each section. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn, wherever necessary. 4) Figures to the right indicate full marks. 5) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) With the help of neat sketch, explain the working of horn type loud speaker. What are its advantages and disadvantages relative to permanent magnet type speaker? [8] b) Explain the working of moving coil microphone. Give typical parameters and applications. [8] Q2) a) Compare variable area and variable density recording in case of optical recording on films. [8] b) Discuss the recording of sound on CD. State advantages of CD recording. [8] Q3) a) With necessary block diagram, explain the working of PA system. State typical specifications for Hi-Fi PA system. [8] b) Define the terms : i) ii) iii) iv) [8] Reverberation. Absorption coefficients. Sound reduction Index. Cross over network. Q4) a) Discuss compatibility requirements of colour TV transmission. What is frequency interleaving? [8] b) Explain the working of PAL Encoder with necessary block diagram.[8] P.T.O. Q5) Write short notes on (any three) : [18] a) MAC Encoding. b) Yaggi Antenna. c) TV remote control. d) Baffles and Enclosures for speakers. SECTION - II Q6) a) Draw the complete colour plexed composite video signal indicating the timings and levels of all the components. Discuss the purpose of all components. [8] b) Explain in detail, the close circuit television (CCTV). [8] Q7) a) Compare design features of low level and high level modulation TV transmitters. [8] b) Explain with necessary diagram, working of TV pattern generator. [8] Q8) a) Discuss the facilities provided in vision mixer for basic editing operations. [8] b) Explain how colourplexed video signal is recorded on VCR Tape? [8] Q9) a) What are the features of HDTV? Discuss compatibility problems in HDTV. State HDTV standards. [8] b) Discuss different types of colour picture tubes in brief. Q10) Write short notes on (any three) : a) Ghost images. b) CATV. c) Interlaced scanning. d) Graphic Equaliser. xxxx [3764]-1027 -2- [8] [18]

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