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Pune University - SY BSc (Sem - II) VOC STILL PHOTOGRAPHY : Paper- IV April 2010

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Total No. of Questions : 4] [Total No. of Pages : 2 P839 [3717] - 245 S.Y. B.Sc. STILL PHOTOGRAPHY AND AUDIO-VISUAL PRODUCTION Principles and Applications of Analog and Digital Communications (Paper - IV) (Sem. - II) (New Course) (Vocational) Time : 2 Hours] Instructions to the candidates: 1) All questions are compulsory. 2) Draw neat and labeled diagrams wherever necessary. 3) Figures to the right indicate full marks. [Max. Marks : 40 Q1) Solve following questions : a) Attempt following multiple-choice questions : [2] i) RF current is converted into Electromagnetic waves and Electromagnetic wave is converted into RF current using............ A) Antenna B) Transmitter C) Receiver D) Amplifier ii) For picture signal transmission..............modulation is used A) Vestigial side band B) Amplitude C) Frequency D) Phase b) Comment on the following statements (any two) : [4] i) Need of modulations and comment on how to avoid of mixing of signals. ii) Power requirement for SSB and DSB generation. iii) FM is not used for picture transmission. [6] c) Solve following Numerical or explain : i) Consider the analog signal x(t) = 2sin50 t + 5sin500 t cos100 t, Find maximum frequency present in x(t) and Nyquist rate for this signal. ii) Compare analog pulse modulation with digital pulse modulation. iii) Explain importance of Nyquist criteria. P.T.O.

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Additional Info : S.Y. B.Sc. Still Photography And Audio - Visual Production (Semister - II) : Principles ans Applications of Analog and Digital Communications (Paper - IV) (New Course) (Vocational), Pune University
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