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2003 & 1997 Course Biomedical Instrumentation (Elective I)

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Total No. of Questions : 12] [Total No. of Pages : 3 [3664] - 246 P 1366 B.E. (Instrumentation & Control) BIOMEDICAL INSTRUMENTATION (1997 & 2003 Course) (406264) (Elective - I) (Sem. - I) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer any three questions from each section. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn whenever necessary. 4) Figures to the right indicate full marks. 5) Assume suitable data, if necessary. SECTION - I Q1) a) Define bio electrode. Name various types of basic bioelectrodes used for bioelectric potential measurements. Explain the necessity of microelectrode, Micropipette electrode. [8] b) Draw and explain electrical equivalent circuit of electrode jelly and Tissue. Specify the importance of use of jelly at electrode electrolyte interface. [8] OR Q2) a) b) Why silver-silver chloride electrode is suitable in biomedical applications? State the properties possess by bio-electrodes. [8] Define and discuss the term Biosensors . [4] c) What are the voltage range, frequency range, and electrode used for ECG and EEG signals? [4] Q3) a) Explain different Chambers of heart. Explain an Electrical conduction system of heart and the process of ECG genesis. [8] b) Discuss the various ECG leads configuration in detail. [8] OR Q4) a) b) Enlist various preamplifiers used in bio signal conditioning? What are limitations of differential amplifier and explain how it overcomes with improved version of the same. [10] Draw and explain Heart Rate meter. [6] P.T.O. Q5) a) b) What is systolic and diastolic pressure? Enlist two important techniques that plays important role in sphygmomanometric BP measurement. Explain the same method of BP measurement along with its advantages and disadvantages. [10] Explain the Dye dilution method of cardiac output measurement. And calculate the cardiac output for heart rate of 90 beats/min. and stroke volume of 56 ml. [8] OR Q6) a) b) c) Enlist various blood flow measurement techniques? What are the problems faced by magnetic blood flow meters if they using permanent magnets or DC excitation. [8] Discuss Doppler shift Ultrasonic blood flow measurement along with neat diagram. [8] List out the microphones used in phonocardiograph. [2] SECTION - II Q7) a) b) What is EEG? Explain the 10-20 Electrode placements. Explain the various types of EEG Electrodes. [10] [6] OR Q8) a) b) c) Explain the functions of various lobes of cerebrum. Define cranium [8] Nerves and enlist them. Draw and explain the brain stem along with function of each part of it.[6] Define Evoked response? [2] Q9) a) Explain the principles involved in intraocular pressure measurement of indentation and applanation tonometer. [10] b) c) Explain various errors in vision and their method of correction. [4] Suggest suitable devices that are used to recover the percentage losses in EAR or EYE, if some residual capacity has been remain with these organs. [2] OR Q10)a) Define a Hearing threshold . Explain the Bekesy audiometer with the help of suitable block diagram. [10] [3664] - 246 -2- b) What are three main sections of Human auditory system? Explain the function performed by each section in human hearing phenomenon. [6] Q11)a) What is Spiro gram? Draw & explain Wedge Spiro meter for respiratory measurement. [10] Draw and explain Infrared gas analyzer. [8] b) OR Q12)a) Define the followings : [10] Gross shock, Let go Current, b) Micro current shock, Hold on current, Lung Compliance. Explain the various methods of accident prevention in medical equipments. [8] [3664] - 246 -3-

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