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Posted By: Nitin Bajaj - Editor Member Level: Diamond Posted Date: 25 Mar 2008
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2007 Jawaharlal Nehru Technological University B.Tech BIO-MEDICAL INSTRUMENTATION Question paper
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III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2007 BIO-MEDICAL INSTRUMENTATION (Electronics & Instrumentation Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks
1. (a) With neat diagrams explain the terms Resting Potential and Active potential . How are these generated in Muscles? (b) With the help of sketches explain about polarized cell and depolarized cell. [8+8]
2. (a) With the help of a neat sketch explain about the physiology of the heart. (b) What are the di?erent parts and how bioelectrical potentials are generated within it? [8+8]
3. (a) What is half cell potential? Explain brie?y. (b) With neat sketches explain the sources of noise while recording low level signals? [6+10]
4. (a) What are the di?erent types of muscles? Explain the importance of motor unit in the muscular contraction. (b) Discuss about the various electrodes used in EMG.
5. Write short notes on (a) Electrodes and leads in ECG (b) Einthonen triangle. [8+8] [10+6]
6. (a) With a neat block diagram explain the working principle and operation of various blocks in an EEG recorder. (b) What type of electrodes are used and how they are placed on the skull in order to record EEG signal. Explain with a neat sketch. [8+8]
7. (a) With a circuit diagram explain the working of a short wave diathermy unit. (b) Explain the terms w.r.t shortwave diathermy treatment: i. Condensor method. ii. Inductive method.
8. (a) Explain the types of leakage currents. (b) What are the precautions to be taken to minimize electric shock hazards? [8+8]
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