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2003 Course Biomedical Eng.

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Total No. of Questions : 12] [Total No. of Pages :3 [3864] - 275 B.E. (E & T/C) BIO - MEDICAL ENGINEERING (2003 Course) (404225) P1156 Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) Answer any three questions from each section. Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Use of logarithmic table, slide rule, mollier charts, electronic pocket calculator and steam tables is allowed. Assume suitable data, if necessary. SECTION - I Q1) a) b) With neat diagram discuss important points of Man - Machine Interface in case of Bio medical instruments. [10] Explain. i) Accuracy. ii) Precision. iii) Repeatability. [6] OR Q2) a) With neat diagram explain material, properties and applications of. i) ii) b) Glass Micro Electrodes. Fiber optical temperature sensors. [10] Explain. i) ii) iii) Sensitivity. Linearity. Hysterisis. [6] P.T.O. Q3) a) b) With neat diagram explain the necessity principle of operation and features of. [10] i) Bio - signal Amplifiers. ii) Filters used in signal processing. Lead I amplitude is 5 mm. Lead II amplitude is 9 mm. What is lead III amplitude? [6] If sensitivity is 50 mm / mV calculate aVR, aVL and aVF. OR Q4) a) Draw a neat diagram and explain different controls and indications on an ECG Machine. [10] b) Cause, effects of Artifacts and remedies in bio - signal measurements.[6] Q5) a) Explain how leakage currents are generated in bio medical instruments? What are the safety thresolds? [8] Explain PC Based Intelligent Bio - medical system. [10] b) OR Q6) a) b) Draw and explain typical circuit to detect QRS signal and heart rate measurement. [10] [8] With a circuit diagram explain the operation of DC - Defibrillator SECTION - II Q7) a) b) Explain Blood pH measurement. What is the range of pH in a healthy human being. [8] With the help of diagram and material used the electrode operation to [8] measure blood CO2. OR Q8) a) b) Q9) a) b) [3864] - Compare operation of Flame photo meter with a conductivity meter with respect to different parameter measurements of blood. [8] Write a detailed note on Autoanalyzer. [8] Explain the working, features and applications of X-Y Recorder in Bio - medical field. [8] Explain R' Triggered and Demand mode in case of a pace - maker. [8] 275 -2- OR Q10)a) b) Explain 21 Electrode EEG signal measurement method. Explain principle of blood cell counting using laser beam. [8] [8] Q11)a) b) Draw a diagram, explain different parts and working of an X - Ray tube.[8] What are the wavelengths and types of Lasers used in Dermatology and skin treatment? [10] OR Q12)Write short notes on: a) CO2 Laser. b) CT Scan Machine. c) MRI Technique. [18] ***** [3864] - 275 -3-

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