December 17, 2011

BIO-MEDICAL-INSTRUMENTATION JNTU previous years question papers


Time: 3hours
Max.Marks:80

Answer any FIVE questions
All questions carry equal marks
- - -

1.a) List out various components present in a biomedical instrumentation system and explain in detail about each component.
b) Differentiate between biomedical instrumentation and biomedical signal processing with certain examples. [8+8]

2.a) What are resting and action potentials?
b) With a neat sketch explain the relation ship between the action potential and muscle contraction. [6+10]

3.a) Give the constructional details of micro electrodes and body surface electrodes.
b) What are the various sources of errors in measuring body potentials using bio electrodes? [8+8]

4.a) With a neat sketch explain about the electrical activities of the heart.
b) With a neat block diagram explain about cardiovascular circulation. [8+8]

5.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]

6. What is pacemaker and discuss various types of pacemakers and their uses in clinical setting? Briefly mention safety precautions to be taken in patients with pace makers. [8+8]

7.a) What is the possible source of EEG? What can it be determined by measuring EEG?
b) Explain how electrodes are located using 10-20 electrode placement system.[8+8]

8.a) List characteristics of EMG signal. Discuss about different electrodes employed in recording EMG.
b) Can ECG machine be used for recording EMG? Justify your answer. [8+8]

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