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Pune University - FY BSc ELECTRONIC EQUIPMENT MAINTENANCE - II, April 2010

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Total No. of Questions :5] P215 [Total No. of Pages : 2 [3717] - 39 F.Y. B.Sc. (Vocational) ELECTRONIC EQUIPMENT AND MAINTENANCE Maintenance concepts and Assembly Methods (New) (Paper- II) Time :3 Hours] [Max. Marks : 80 Instructions to the candidates: 1) All questions are compulsory. 2) Figures to the right indicate full marks. 3) Draw neat diagrams wherever necessary. Q1) Attempt the following :a) Explain different types of losses in transformer. b) Explain efficiancy of transformer. c) Explain the term absolute maximum rating. d) Explain Electric shock. e) What are different tools required for desoldering. f) Explain common faults that occur in inductors. g) Explain noise in resistances. h) [16] Explain common faults that occur in capacitors. Q2) Answer any four : a) Explain the difference between good & bad solder joint. b) Explain different safety devices used for domestic purpose. c) Explain the difference between cold and dry solder joint. d) Explain electrical wiring of a fan & regulator. e) [16] Explain the advantages of ultrasonic soldering. Q3) Answer any four [16] a) Explain the importance of Earthing and explain the procedure of Earthing. b) Explain the role of flux in a good solder joint. c) Explain different precautions to be taken while handling electrical instrument. P.T.O. d) With the help of a neat diagram explain soldering Iron. e) Enlist tools required for soldering and desoldering. Q4) Answer any two of the following : a) b) c) [16] Draw the diagram of a typical stair case wiring and Explain. With the help of a neat diagram explain the working of a M.C.B. What do you understand by 60 : 40 & 40 : 60 compositions of the solder wire also explain their advantages & disadvantages Q5) Answer any two of the following : [16] a) With the help of a neat diagram explain the construction of IFT? What does tuning of IFT means? b) Write a note on different wire harnessing techniques. c) With the help of a neat diagram. Explain the use of Bread board. #### [3717] - 39 2

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Additional Info : F.Y. B.Sc. (Vocational) ELECTRONIC EQUIPMENT AND MAINTENANCE Maintenance concepts and Assembly Methods (New) (Paper- II), Pune University
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