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Reg No.: Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
EIGHTH SEMESTER B.TECH DEGREE EXAMINATION(S), OCTOBER 2019

Course Code: EC482
Course Name: BIOMEDICAL ENGINEERING
Max. Marks: 100 Duration: 3 Hours
PARTA
Answer any two full questions, each carries 15 marks. Marks
1 a) Explain about bio-medical instrumentation system with necessary block diagram. (7)

b) Illustrate with necessary diagram how action potential is generated in human (8)
body and write the Nernst equation for bioelectric potential.
2 a) Describe the cardiovascular system of human body system. (8)
b) Suggest an instrumentation system for the measurement of blood flow by using (7)
the electromagnetic principle.

3 2) Explain the construction and working principle of chopper amplifier. Mention its (7)

advantages.
b) Illustrate the working of ultrasonic blood flow meter with diagram. (8)
PART B
Answer any two full questions, each carries 15 marks.
4 a) With neat graph, explain any six respiratory parameters. (9)
b) Draw the lead system used for measuring electrical activity of brain. (6)
5 8) Whatis a ventilator? Describe the working of ventilator with a neat sketch. (10)
b) What is fibrillation? How it can be treated? (5)

6 a) By commenting on pH value of blood, explain an instrumentation system for (8)

measuring pH value of blood.

b) Draw the block diagram of a short wave diathermy unit and explain its working. (7)
PART C
Answer any two full questions, each carries 20 marks.
7 a) Explain the working of X-ray imaging system with diagram. (10)
b) Explain the image reconstruction procedure in CT. (10)
8 8) Draw the block diagram of MRI system and explain the image reconstruction (10)
method.
b) Explain single channel telemetry system for ECG. (10)
9 a) List the applications of ultrasound in medicine. (6)

b) With circuit diagram, explain any two methods for reducing electric shock (8)
hazards.
c) Explain different scanning modes used in ultrasound imaging. (6)

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