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Reg No.: Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Seventh semester B.Tech degree examinations (S), September 2020

Course Code: AE403
Course Name: BIOMEDICAL INSTRUMENTATION

Max. Marks: 100 Duration: 3 Hours
PART A

Answer any two full questions, each carries 15 marks. Marks
1 a) Describe the electrophysiology of the cardiovascular system. (6)
b) Differentiate between unipolar and bipolar electrodes. (3)
௦) Explain the working of a suitable transducer for measuring a displacement event. (6)
2 a) Explain the working of a pacemaker with the help of a block diagram. (8)
b) What are evoked potentials? (2)
c) Explain the principle of operation of a Plethysmograph. (5)

3 a) With neat diagrams, explain the different types of electrodes used to measure (10)
bioelectric events.

b) Explain EEG with relevant waveforms for different mental activities. (5)
PART 8
Answer any two full questions, each carries 15 marks.
4 a) Explain the mechanism of breathing. List the various components involved. (8)
b) What is an artificial respirator? What are the different types? (4)
c) Whatare the different types of hearing aids? (3)
5 a) Describe the physiological effects of electric shock. (6)
b) With ೩ suitable block diagram, describe the bedside patient monitoring system. (9)
6 a) Whatis an artificial kidney? Explain any one method of dialysis. (9)
b) Explain a single channel telemetry system for ECG transmission. (6)
PART C
Answer any two full questions, each carries 20 marks.
7 a) Explain the working of a colorimeter. (10)
b) What are blood gas analysers? Explain the blood pCO, measurement. (10)
8 a) Whatare the applications of colour Doppler systems? (3)
b) Explain the principle of ultrasound imaging system. (8)
c) Explain the principle of magnetic resonance imaging. (9)
9 a) Explain the working of a flame photometer and its use in diagnosis. (10)
b) Explain the image reconstruction principle of computed tomography. (10)
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