Anna University Chennai 2007-1st Sem B.E Electronics & Tele-Communication Engineering Vester - Question Paper

ANNA UNIVERSITY :: CHENNAI – 600 025
MODEL ques. PAPER
VI Semester
B.E. ELECTRONICS AND COMMUNICATION ENGINEERING
EC041 – MEDICAL ELECTRONICS
Time: 3 Hours Maximum : 100 Marks
ans All The ques.
PART – A (10 x two = 20 Marks)
1. Draw the equivalent circuit of an electrode used for bio-potential recording.
Mention about every component of the circuit.
2. Draw a typical ECG waveform and mark the different events.
3. What is eletropharesis?
4. What do you mean by korotkoff’s sound? How is it useful in the medical field?
5. What is a dialyser? elaborate the essential components of a dialyser?
6. elaborate the parameters to be monitored when the patient is connected to a heart
– lung machine?
7. explain about the parameters to be taken into account in deciding the carrier
frequency of a biotelemetry unit.
8. Write about the kinds of electrodes for short wave diathermy?
9. Name the laser most commonly used for ophthalmic application. Why?
10. What is hypothermia? Is it useful in the field of medicine?
PART – B (5 x 16 = 80 Marks)
11.i) discuss about the generation of bio-potential? (8)
ii) define the method applied to study about the activity of brain centre for vision
and highlight the method of processing the signal? (8)
12.a)i) Write about the blood cell counter working on the principle of conductivity.
elaborate the issues associated with this method? (8)
ii) What is and autoanalyser? discuss. (8)
(OR)
12.b)i) What do you mean by cardiac output? discuss the principle of dye dilution
technique for the measurement of the identical. (8)
ii) define in detail, the electromagnetic blood flow meter. elaborate its is
advantages and how are they overcome. (8)
13.a) What is atrial fibuillation? How is it arrested? discuss elaborate the precautions to
be followed when this equipment is used? (16)
(OR)
13.b) discuss the operation of pacemaker working on demand. Compare its
performance with the trigged kind. (16)
14.a)i) Write briefly about radio pill. (8)
ii) What is diathermy? explain about ultrasound diathermy? How is the frequency of
operation opted for this type? (8)
(OR)
14.b) How are the muscles and nerves stimulated by electronic means? discuss the
complete set up of a medical stimulator. (16)
15.a) discuss about the imaging method applied to study about the peripheral
circulation? elaborate its other applications? (16)
(OR)
15.b)i) How can a high frequency generator be used as a surgical knife? discuss. (10)
ii) Write about the terms “microshock” and “macroshock” hazards. (6)
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Earning:   Approval pending.