Maharashtra State Board of Technical Education 2008-4th Sem Diploma Medical Electronics Biosensors- - Question Paper
Sample Question Paper-I
Course Name : Diploma In Medical Electronics Semester : Fourth Course Code : MU
Subject : Biosensors Marks : 80
9076
Time: 3 Hours.
Instructions:
1. All questions are compulsory.
2. Illustrate your answers with neat sketches wherever necessary.
3. Figures to the right indicate full marks.
4. Assume suitable data if necessary.
5. Preferably, write the answers in sequential orders.
Attempt any four. 08 Marks
Q.1.
a)
b)
c)
d) e)
B)
a)
b)
c)
Q.2.
a)
b)
c)
d)
Q.3.
a)
b) c)
Write Definition of Biometrics.
State the use of transducer with respect to man-Instrument system.
List the materials used for construction of thermistors.
State working principle of RTD.
List the different Biochemical transducers.
Attempt any two. 08 Marks
What is strain gange? Give its different types.
Explain with neat diagram how optical transducers are used for measurement in Biomedical.
Draw block diagram of ultrasonic blood flow meter and explain its working?
Attempt any three. 12 Marks
Explain how partial anygen in the blood is measured by using po2 electrode with neat diagram.
Describe the phenomenon of Electrolyte-Skin interface with neat sketch.
Explain how instrumentation amplifier satisfies all the requirements of Bio amplifier. Draw labelled sketch of microelectrode.
Attempt any two. 12 Marks
State the working principle of Thermocouple with diagram. How Thomson effect and peltier effect adds to its utility.
Draw neat diagram and give construction of one example each for - i) ECG, ii) EEG
iii) EMG Measurement
Give the names for different pressure transducers. And explain working of piezoelectric transducer with diagram.
Q.4. Attempt any four. 16 Marks
a) List at least Eight Specifications of Medical Instrumentation system.
b) Show with neat diagram how LVDT is used for pressure measurement
c) Draw diagram give construction details and state use of Glass electrode for pH measurement.
d) On which factors electrodes are classified as Polarisable & non-Polarisable electrode. State their use.
e) Define pH? Draw a labelled diagram of Combinations pH electrodes.
f) Draw labelled sketch of phase sensitive detector for i) Positive half cycle ii) Negative half cycle.
Q.5. Attempt any three. 12 Marks
a) Show with circuit diagram how change in resistance in RTD is converted into equivalent voltage signal.
b) Describe how capacitive method is used for pressure measurement.
c) State different methods of thermal convection used for blood flow measurement.
d) State and explain the principle of variable inductance displacement transducer.
Q.6. Attempt any three. 12 Marks
a) State and explain the principle of electromagnetic Blood flow meter with diagram.
b) Describe working of needle electrode and wire electrode with neat diagram.
c) Draw a circuit diagram of bridge amplifier and explain its operation.
d) Explain how inaccessibility of variables create problem in measuring a living system.
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