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Posted Date: 07 Jun 2011 Posted By:: praveen Member Level: Gold Points: 5 (₹ 1)
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2011 Indian Institute of Technology B.Tech. Electronics and Communications Engineering IV B.Tech II Semester Examinations,APRIL 2011 BIO-MEDICAL INSTRUMENTATION SET 4 University Question paper
Time: 3 hours
Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. Explain human muscle system. Discuss in details with the blocks diagram, the
working of an EMG machine.[8+8]
2. (a) Draw ECG waveform and correlate with electrical and mechanical activity of
the heart.
(b) Draw amplifier circuits of ECG machine incorporating various controls and
explain how they function. [8+8]
3. (a) With neat sketches describe a cardiac cycle.
(b) Explain in detail about physiology of heart.[8+8]
4. (a) Explain the electro physiology of a nerve and explain how an impulse is transmitted from nerve to muscle.
(b) Explain the generation of bio- electric potentials associated with the muscles
of the heart. [10+6]
5. (a) With an example, explain the importance of an isolation amplifier in biomedical instrumentation.
(b) What are chopper amplifiers ? Draw a non mechanical chopper amplifier and
explain its working. [8+8]
6. (a) What is deionizer? How is it useful for the treatment of city water?
(b) What is acetate and bicarbonate dialysis? Discuss about the advantages and
disadvantages.[8+8]
7. (a) Discuss about various types of Bio chemical electrodes and give their applications.
(b) Distinguish between external and internal electrodes and give some examples [8+8]
8. (a) Explain the principle of operation of high frequency positive pressure ventilation.
(b) Briefly discuss about the various gas transport mechanisms that can be used with
ventilators.[8+8]
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