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2003 Course Electronics Measurement Systems

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Total No. of Questions : 12] P1559 [Total No. of Pages : 2 [3764] - 250 B.E. (Electronics Engineering) 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) 4) 5) 6) Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Your answers will be valued as a whole. Assume suitable data, if necessary. 1 ) a) b) 2 ) a) b) 3 ) a) b) 4 ) a) b) With neat diagram explain working of vector volt meter. Explain the working principle of Q meter with phasor diagram. [12] [6] OR What errors are associated with the measurement of Q using LCR - Q meter? Explain in detail. [12] Explain with neat diagram working of phase meter. [6] Explain working of frequency counter with diagram. [8] Explain functions of time base generator in frequency counter. What is a criteria for selection of period measurement or frequency measurement in measurement of unknown frequency? [8] OR Explain Gating Error in frequency measurement using frequency counter. [8] Explain with neat diagram how to increase the frequency range of frequency counter? [8] P.T.O. 5 ) a) b) 6 ) a) b) Explain with neat diagram frequency selective wave analyzer. [8] Explain with neat diagram superheterodyne spectrum analyzer. [8] OR Explain fundamental suppression hormonic distortion analyzer. [10] Explain pretrigger, posttrigger and trigger modes of logic analyzer center. [6] SECTION - II 7 ) a) Explain SMPTE method of intermodulation distortion measurement. [8] b) Explain direct method for measurement of complex gain of an amplifier. [8] 8) ) b) 9) ) b) 10) ) ) ) 11) ) b) 12) ) b) OR Explain impedance measurement using dual channel network analyzer. [8] Explain with neat diagram SINAD sensitivity test. [8] Explain with block diagram Digital Storage Oscilloscope. With neat diagram explain digital data acquisition system. OR : . . . [9] [9] [18] Explain how to test an audio amplifier using computer controlled measurement system. [8] What are the advantages and disadvantages of virtual instruments. [8] OR Give setup for computer controlled testing of radio receiver. [8] Explain PCI interface. [8] ***** [3764] - 250 -2-

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