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Pune University - FY BSc ELECTRONIC EQUIP. MAINTENANCE -I, April 2010 (Old Course)

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Total No. of Questions : 5] P250 [Total No. of Pages : 2 [3717] - 83 F.Y. B.Sc. ELECTRONIC EQUIPMENT MAINTENANCE Test and Measuring Instruments and Consumer Products (Paper - I) (Old Course) (Vocational) Time : 3 Hours] Instructions to the candidates: 1) All questions are compulsory. 2) Figures to the right indicate full marks. 3) Draw neat diagrams wherever necessary. [Max. Marks : 80 Q1) Attempt the following : a) What is loading effect? b) What is accuracy and precision? c) What is dynamic accuracy and response time? d) Show different faults in pulse. e) Explain the function of triggering circuit in CRO. f) What are different parts of electric Iron? g) What is typical current consumption for digital clock? h) [16] How to test transistor by using multimeter? Q2) Attempt any Four of the following : [16] a) What are advantages of digital meter over analog meter? b) What is ground? Explain concept of ground using neat labelled diagram. c) Explain the working of a permanent magnet moving coil type current meter. How is its current range increased? d) Describe CRO probes. e) Write a short note on distortion factor meter. P.T.O. Q3) Attempt any four of the following : a) Explain automatic ranging of digital instrument. [16] b) Explain typical faults in hearing aid. c) Describe the working of multirange Ohmmeter. Explain why zero resistance gives full scale deflection. d) Write a short note on microwave oven. e) What is home protector? Explain. Q4) Attempt any two of the following : [16] a) Explain various applications of frequency counter. b) What is electronic ignition system? Explain with neat diagram. c) What are precautions and remedial measures to eliminate Hf noise pick up? Q5) Attempt any two of the following : [16] a) Enlist typical controls on front panel of dual trace CRO. b) With the help of block diagram, explain the working of circuit breaker. c) Explain different types of errors. vvvv [3717]-83 2

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Additional Info : F.Y. B.Sc. ELECTRONIC EQUIPMENT MAINTENANCE : Test and Measuring Instruments and consumer products (Paper - I) (Old Course) (Vocational Course), Pune University
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