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2003 Course Biomedical Eng.

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Total No. of Questions : 12] P1347 [Total No. of Pages :3 [3664] - 208 B.E. (E & TC) BIOMEDICAL ENGINEERING (2003 Course) (404225) 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 wherever necessary. 4) Figures to the right indicate full marks. 5) Assume suitable data, if necessary. SECTION - I Q1) a) b) Describe structure of i) skeletal muscle fiber. ii) white blood cell. iii) motor neuron. [6] Sketch 4 chambers of Heart. Show all the valves. Locate SA node & describe functioning of Heart for circulating & pumping blood in Human Body. [10] OR Q2) a) Describe with waveform resting potential, action potential, refractory period, depolarisation and repolarisation in a human body cell. [6] b) List different types of electrodes used in Biomedical electronic system, also state half cell potential of Ag+, Cu++, and H+ ions with explanation for the term Half cell potential. [6] Describe sodium pump. [4] c) Q3) a) What type of electrodes are used for EMG and EEG, describe with sketches and state their voltage and frequency ranges. [8] P.T.O. b) Describe Systolic and Diastolic blood pressure. State their standard, normal values. If systolic pressure is 150 mmHg and diastolic pressure is 95 mmHg what is MAP. [8] OR Q4) a) Describe working of ECG machine. [8] b) Sketch all the 12 Lead configurations of the ECG, electrode placement.[8] Q5) a) Describe non-invasive B.P. measurement, state different korotokoff sounds encountered during B.P. measurements. [10] b) With help of a sketch describe invasive BP measurement technique. [8] OR Q6) a) b) Discuss atrial and ventricular fibrillation of Human Heart. [8] Discuss DC Defibrillator with waveform and apt equipment used. [10] SECTION - II Q7) a) Discuss a simple circuit explaining principle of pace maker. Which batteries are generally used and why only these batteries used. [8] b) Discuss, R wave Triggered, R wave inhibited and 'P wave' Triggered modes of a pace maker while explaining the purpose behind the necessity of pace maker. [8] OR Q8) a) b) Q9) a) b) Describe a technique to measure pCO2. [8] Describe Auto analyser and its applications. [8] Describe spectrophotometer with neat sketch. [8] With help of a sketch describe working of flame photometer. [8] OR Q10)a) b) Discuss multichannel EEG equipment. [8] Explain 10 - 20 electrode arrangement for EEG with sketch of placement of electrodes. [8] [3664]-208 2 Q11)a) b) Compare any four applications of Lasers in medicine. [8] Describe working of Excimer Laser and its application for medical field. [10] OR Q12)a) With help of suitable sketch and diagrams explain working of X Ray machine. [10] b) Compare MRI and CT scan and distinguish their difference with ultrasound system. [8] kbkb [3664]-208 3

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