Pondicherry University 2007 Bio-Medical Enggineering (B.Tech) - Question Paper

B.Tech DEGREE EXAMINATION,NOV 2007

3rd SEMESTER

BIO MEDICAL ENGINEERING

BIOPHYSICS

Time : 3 hours Maximum :75 marks

ans all ques..

UNIT – 1

1 (a) What is the difference in info found in a electrocardiogram and phonocardiogram (6)

(b) Sketch and tag the conduction system of the heart. (3)

(c) describe action potential .Draw its waveform and tag the amplitude and time values. (6)


(or)

2 (a) write about the significance of fibrillation,its kind and diagnosis. (6)

(b) state nernst formula (3)

(c) discuss the electrical action of the sinoartial node. (6)


UNIT – 2

3 (a) List the basic differences in principle and operating conditions of EEG,ERG,EOG. (9)

(b) compare the nature of outputs found and its interpretations
of EGG and ENG (6)


(or)

4 (a) Bring out the principles and salient features of nerve conduction studies. (6)


(b) With the help of a basic block diagram of and EEG machine with both analog and digital components discuss its functioning. (9)


UNIT – 3

5 (a) why does the human body have dielectric properties .Highlight its significance in aiding the functioning of the physiological system. (6)

(b) elaborate the sources of leakage currents. (3)

(c) discuss the concept of total body impedance and its affects. (6)

(or)

6.(a) Illustrate the possible effects that could occur while handling impedances at high frequencies (6)

(b) why is it important to maintain the integrity of the grounding system for protection against microshock. (3)

(C) Write about the effects of electric current on the human body. (6)


UNIT - four

7.( a) Write about electromagnetic radiation and its interaction with matter. (9)

(b) List the specific application of isotopes in medical diagnosis in detail (6)


(or)

8.(a) explain the principles of radioactive decay(7)

(b) discuss in detail the functioning of any 2 kinds of detectors used for the measurement of radiation(8)


UNIT –5

9.(a) List the mandatory regulations to be followed by hospitals to ensure environmental safety.(6)

(b) write about any 3 BIS standards of safety while handling radiation. (3)

(c) how are ultra low and low temperatures produced. (6)

(or)

10. (a) write about the useful and harmful effects of UV radiation on human beings.(6)

(b) Write about medical ethics (3)

(C) what the precautions to be taken to protect against burns and explosion hazards (6)

Earning:   Approval pending.