Medical Electronics and Instrumentation — DU B. Sc. (Hons) Electronics Previous Year Question Papers

Medical Electronics and Instrumentation (DSE) B.Sc. (H) Electronics (NEP) 2. All questions cany equal marks. (b) What is powerline interference? (c) Why do.we require isolation amplifiers in a biomedical instrument? (d) What sensors are used in a digital blood pressure monitor? (e) What is the basic principle behind an MRl scan? ® What do you infer from a CT scan? (3) 2. (a) What are the different artefacts encountered while recording ECG? (6) (b) Draw the ECG wave form indicating typical time intervals and amplitude o.f the waves? Explain how these waves are physiologically correlated with heart's activity. (6) (c) What is a central monitoring system? How is different from a bedside monitoring system? How is telemetry used in medical diagnostic/monitoring? 3. (a) What are X-rays? How are they useful in different fields of medical diagnostics? Briefly discuss the generation of x-rays. (6) (b) How is an MRI scan different from a CT scan? Compare between the diagnostic results of the two scanning techniques. (6) (c) Discuss the functioning of Ultra sonic imaging systems used for s ono graphy. (6 ) 4. (a) Discuss the physiological body system involving the respiratory system. (6 ) (b) Draw and discuss the functioning of a microcontroller based ECG system. (6) (c) What types of electrodes are used in ECG, BEG and EMG systems? (6) 5. (a) Discuss the various effects of electric current on the Human body. (6) (b) Explain the working of an oximeter (c) Explain the functions of a Humidifier, Nebulizer and Aspirator. (6) 6. (a) Discuss the functioning of an optical glucose sensor. (6) (b) Explain the working of a cardiac defibrillator. How is it useful in a medical condition? ( 6) (c) Compare between a conventional X-ray and a digital X-ray based on its exposure and detection techniques. (6) 7. (a) Discuss cardiovascular monitoring using ECG and phonocardiography. (6) (b) (c) Elaborate on the testing of biomedical equipment. Discuss the working of Blood cell counters.