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Pune University - FY BSc ELECTRONIC SCIENCE - I, April 2010 (Old Course)

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Total No. of Questions : 5] P240 [Total No. of Pages : 2 [3717] - 72 F.Y. B.Sc. ELECTRONIC SCIENCE - I EL1-T1 : Principles of Analog Electronics (Paper - I) (Old Course) (2004) Time : 3 Hours] Instructions to the candidates: 1) All questions are compulsory. 2) Figures to the right indicate full marks. 3) Draw the neat diagrams wherever necessary. [Max. Marks : 80 Q1) Answer the following questions in brief (any eight) : [16] a) b) Draw square waveform with 50% duty cycle. Write the applications of P-N junction diode. c) d) e) Enlist important members of thyristor family. Draw I-V characteristics of triac. Define tolerance term and give tolerance for different colors. f) Numerical codes on ceramic disc capacitor is 102. Write value in terms of farad. Write advantages of fixed biasing for BJT. g) h) i) What is small signal amplifier? An Electric current of 20 mA was found to flow through a resistor when potential difference of 2Volt was applied across it. Determine the resistance of the network. Q2) Answer the following (any four) : [16] a) What is resistor? Draw its symbol. Classify it and explain any one in brief. b) c) State Kirchoff s Current Law (KCL) and Voltage Law (KVL). What is T & network? Give its conversion formulae for T and networks. d) Draw IV characteristics of linear and nonlinear devices. e) Explain field effect transistor as voltage variable resistor (VVR). P.T.O.

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Additional Info : F.Y. BSc. ELECTRONICS EL1 - T1 : Principles of Analog Electronics (Paper - I) (Old Course) (2004) (Paper - I), Pune University
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