Anna University Chennai 2008-6th Sem B.E Electronics and Instrumentation Engineering ./B.Tech , IL/ ,ester,,EI 1351 – BIO MEDICAL INSTRUMENTATION - Question Paper

B.E./B.Tech DEGREE EXAMINATION, APRIL/MAY 2008
Sixth semester
Electronics and Instrumentation Engineering
EI 1351 – BIO MEDICAL INSTRUMENTATION
Time : 3 Hours Maximum: 100 marks
ans all ques.
PART A – (10x2=20)
1. Name the principle ions involved in the phenomena of producing cell potentials.
2. When measuring residing cells with transducers how will you deal with the possibility of energy concentrations which will damage the cell.
3. What is need for instrument amplifiers in medical equipments?
4. Draw a typical 'pqrst" complex waveform with respect to ECG?
5. What is need for grounding in medical equipments?
6. Why glass electrode is very much preferred as active electrode in a pH meter?
7. What is the specific advantage of fluoroscopy over conventional x ray imaging.
8. What is meant by let go current?
9. Distinguish defibrillators from a pacemaker.
10. Write the principle of hemo dialysis.

PART B (5x16=80 marks)

11.(a) Analyze the physiology of heart and lungs and derive an approximate engineering system equivalent to the identical. (16)
(OR)
(b) Show how an ultrasonic transducer is applied in clinical diagnostics circuit. (16)
12.(a) Compare the characteristics of micro needle and surface electrodes.(8+8)
(OR)
(b) With neat block diagram shoe how EEG is recorded? (16)

13.(a) elaborate known as "Korotokoff sound"? How will you measure them with an indirect method of measurement? (4+12)
(OR)
(b) Where do you use a Clarke's electrode? explain the method used for measuring flow rate of O2 in exhaust air. (16)

14.(a) Bring out the clinical applications of endoscope. (16)
(OR)
(b) Show how computer tomography has revolutionized the field of diagnosis explaining its salient features. (16)

15.(a) List down the different kinds of pacemakers describing the working of any 1 of them. (16)
(OR)
(b) Write brief notes on the working principle of
(i) Nerve stimulators. (8)
(ii) pur tine audio meter. (8)

Earning:   Approval pending.