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Posted By: deepak .b Member Level: Silver Posted Date: 13 Jan 2008
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2006 Pondichery University Bio-Medical Enggineering (B.Tech) Question paper
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APRIL - 2006
BIO-MEDICAL ENGINEERING
BIO-PHYSICS
THIRD SEMESTER
ANSWER ALL QUESTIONS
UNIT - I
1. (a) Explain in detail the electrical activity of the
heart with a neat diagram. (6)
(b)Give the principle of ballistocardiography. (3)
(c) What is significance of Einthoven triangle?Give any three
possible types of lead connections along
with ECG wave forms. (6)
Or
2. (a) Write about the significance of different
types electric potentials generated on a cell membrane.
(6)
(b) What is heart rate, bradycardia and tachycardia?(3)
(c) Give the block diagram of a basic arrhythmia
monitoring system. (6)
UNIT - II
3. (a) Describe the principle and application of any
two biomedical recorders. (6)
(b) Write a brief note on skin contact impedance.
(3)
(c) Differentiate the working principle and
applications of ERG and EEG. (6)
Or
4. (a) Give the principle of EEG, the recording
electrodes used and its applications. (6)
(b) What are receptor potentials? (3)
(c) With a neat sketch explain the electrical activity of brain. (6)
UNIT - III
5. (a) Define impedance. (3)
(b) Write about the sources of leakage currents and its measurements. (6)
(c) Give an account of the safety measures to be adopted
before exposing a patient to electrical treatments and the hazards caused by it. (6)
Or
6. (a) Describe the nature of impedances
encountered at high frequencies. (6)
(b) Write about the basic purpose of safety measures used with electrically susceptible patients. (6 )
(c) Name two different ways in which electricity can harm the body. (3)
UNIT IV
7. (a) Write about the 3 different types of radiation. (3)
(b) Explain the principle of visualizing body organs by radioisotope methods. (6)
(c) What happens when electromagnetic radiation interacts with the human body? (6)
Or
8. (a) Write about the applications of radioactivity
in medical diagnosis. (6)
(b) How is radiation measured? (3)
(c) Briefly explain photoelectric and pair production process, (6)
UNIT V
9. (a) Highlight any three mandatory ISO
standards and BIS regulations to be followed in any
hospital. (6)
(b) Write a note on medical ethics. (3)
(c) How are ultra low and low temperature produced for
use in medical applications? (6)
Or
10. (a) Discuss the useful effects of radiowaves,
microwaves and IR radiation on humans. (6)
(b) State the precautions to be taken for
action against shock and explosion hazards. (3)
(c) List the harmful effects of magnetic field and
UV radiation when used for medical diagnostic purposes. (6)
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