JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV MEDICAL INSTRUMENTATION Previous Question Paper (May/June - 2019 - R15)
Part A is compulsory. Part B consists of 5 Units. Answer any one full question from each unit.
Part A
What is Synapse?
Answer
A synapse is the specialized junction between two neurons or between a neuron and a target cell (such as a muscle or gland), where information is transmitted via chemical neurotransmitters or electrical signals.
Write the Nernst equation for electrode potential.
Answer
The Nernst equation for electrode potential is given by:
Where E is the electrode potential, E₀ is the standard electrode potential, R is the gas constant, T is the absolute temperature, n is the number of electrons transferred, F is the Faraday constant, and a represents the activities of the oxidized and reduced species.
What is meant by Ohmic over potential?
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What are the different types of electrodes?
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What is the need for instrument amplifiers in medical equipment’s?
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What are the sources of Noise in Low level measurements?
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Name the different types of Analog recorders.
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What are the different types of amplifiers used with recorders?
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Define macro shock.
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List out the important susceptibility parameters.
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Part B
Discuss in detail about action potential and resting potential.
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With a neat diagram explain the structure of a living cell of a body and its constituents.
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Draw and explain diagrams of EEG and EMG.
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Explain the process of propagation of electrical pulses along the axon with relevant diagrams.
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Differentiate between microelectrodes and body surface electrodes.
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Discuss the characteristics of Electrode-Electrolyte interface.
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Draw equivalent circuit of a biopotential electrode interface. Discuss in detail about various types of biopotential electrodes.
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What are the electrical properties of Microelectrodes? Explain.
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What are chopper amplifiers? Mention their importance in biomedical instrumentation. Draw a non-mechanical chopper amplifier and explain its working.
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Explain the working of Carrier amplifier with a neat diagram.
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Explain with a circuit diagram, the working of an instrumentation amplifier.
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What is a Pre-amplifier? Describe the working of a Pre-amplifier.
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What is a recorder? What are the different types of recorders? Explain the working of a Potentiometric recorder.
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Discuss the working of an Inkjet recorder with a diagram.
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Discuss about different types of displays in a monitor.
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Explain the working of a Thermal Array Recorder.
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What are different shock hazards that can be generated from electrical equipment and give prevention against them.
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Why is it so important to maintain the integrity of the grounding system for protection against micro shock?
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What is the difference between electrical macro shock and micro shock? In what parts of the hospital is micro shock hazards likely to exist?
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Show how a single electric instrument can, at the same time, be the path for micro shock current flowing both to and from the patient with a neat diagram.
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