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2003 Course Electronic Measurement Systems

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Total No. of Questions : 12] P945 [Total No. of Pages : 3 [3664]-203 B.E. - (E & TC) ELECTRONIC MEASUREMENT SYSTEMS (2003 Course) (404222) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) Answer three questions from Section I and 3 questions from Section II. Answers to the two sections should be written in separate answer books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Use of logarithmic tables, slide rule, electronic no-programmable pocket calculator is allowed. Assume suitable data, if necessary. SECTION - I Q1) With appropriate example, explain following terms. a) b) c) d) e) f) g) h) [16] Instrument. Accuracy. Precision. Sensitivity. Resolution. Error. Repeatability Linearity. OR Q2) a) Write important specifications of Digital LCR-Q meter and its applications. [8] b) Explain the static characteristics of measuring instruments. [8] Q3) a) Why calibration is required? What should be the frequency of calibration? Write steps to calibrate any instruments. [8] b) Draw and explain suitable diagram for period measurement using universal counter. [8] OR P.T.O. Q4) a) What is the difference between systematic and random errors? What are the typical sources of these errors? [8] b) How is the standard meter defined? What is the difference between a primary and secondary standard? [8] Q5) Write short note on : [18] a) Probes. b) DSO. c) Sampling Oscilloscope. OR Q6) a) Explain alternate and chop mode of operation w.r.t. dual trace oscilloscope. [8] b) W.r.t. DSO explain following : i) Maths function. ii) FFT. iii) Roll Mode. iv) Zoom Mode. v) Glitch Mode. [10] SECTION - II Q7) a) Compare logic analyzer and spectrum analyzer. b) Explain functional block diagram of heterodyning wave analyzer. OR [8] [8] Q8) a) Draw block diagram and explain fundamental suppression harmonic distortion analyzer. [8] b) Explain following terms w.r.t. spectrum analyzer. i) Dynamic range. ii) Resolution bandwidth. iii) Span. [8] Q9) a) What are the different features of RF signal generator? Describe any one method to implement it. [8] b) Explain SINAD sensitivity test setup. OR [3664]-203 2 [8] Q10) a) What are the differences between scalar and vector network analyzer.[8] b) How S-parameters measurement is carried out by network analyzer? Explain it with suitable diagram. [8] Q11) a) Explain IEEE 488 bus. [8] b) What are the virtual instruments and how it is used for applications such as TDM & FDM? Explain any one in details. [10] OR Q12) Write short note on : [18] a) PCI/PCI express. b) Computer controlled test measurements. c) OTDR. [3664]-203 3

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