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2003 Course Electronics Measurement Systems

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Total No. of Questions :12] [Total No. of Pages : 3 P1151 [3864] - 270 B.E. (Electronics & Telecommunication) ELECTRONICS MEASUREMENT SYSTEMS (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer three questions from section I and three 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) Figures to the right indicate full marks. 5) Your answers will be valued as a whole. 6) Assume suitable data, if necessary. SECTION - I Q1) a) Give circuit diagram for measuring small inductor using LCR-Q meter and derive expression for small inductor Ls . [8] b) Calculate the value of the self capacitance of a coil when the following measurements are made: i) ii) c) AL frequency F1 = 2 MHz tuning capacitor is set at 400pF. When the frequency is increased to 6 MHz, the tuning capacitor is tuned at 20 pF. [6] Explain accuracy and precision of measuring instruments. [4] OR Q2) a) b) Q3) a) b) Explain with block diagram Vector Voltmeter . [10] Explain with block diagram true RMS Voltmeter. [8] List different types of standards and explain what is a difference between a primary standards and secondary standards. [8] Explain working principle of frequency counter. [8] OR P.T.O.

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