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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII (NEW) EXAMINATION — WINTER 2018
Subject Code: 2171102 Date: 06/12/2018
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Subject Name: Biomedical Instrumentation
Time: 10:30 AM TO 01:00 PM Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Discuss Nervous system. 03
(b) Discuss ECG signal with various points of voltage level. 04
(c) Explain the generalized medical instrumentation system in detail. 07
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Q.2 (a) Discuss the body cells in brief. 03
(b) Discuss EEG bands in detail. 04
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(c) Explain Compensation Techniques in detail. 07
OR
(c) Explain Active state of excitable cells. 07
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Q.3 (a) What are the sources of Noise? 03
(b) Explain noise reduction by signal averaging in biomedical signals. 04
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(c) Explain Internal Electrodes in detail. 07
OR
Q.3 (a) Define following terms: Noise factor, Noise figure, and Noise temperature 03
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(b) An EEG system processes a 5 microvolt signal in the presence of a 100 microvolt random noise level. Calculate the unprocessed SNR, the processes SNR for 400 repetition of the signal. 04
(c) Explain body surface electrodes in detail. 07
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Q.4 (a) Discuss: Cerebral angiography 03
(b) Enlist the typical EEG system faults. 04
(c) Explain the standard 12 lead system for ECG measurements in detail. 07
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OR
Q.4 (a) Discuss: Cranial x-rays 03
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(b) Discuss the ECG system faults. 04
(c) Explain the standard 10-20 system for EEG measurements in detail. 07
Q.5 (a) Compare perfectly Polarizable and Nonpolarizable Electrodes. 03
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(b) Discuss basic approaches to protect against shock. 04
(c) Explain Macroshock Hazards in detail. 07
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OR
Q.5 (a) Discuss various types of Noise. 03
(b) Enlist various important susceptibility parameters for safety. 04
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(c) Explain Microshock Hazards in detail. 07
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