Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 4th Sem New 2140306 Biosensors And Transducers Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2140306 Date: 13/12/2019
Subject Name: Biosensors & Transducers
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Explain functioning of Chemoreceptors in Human body. 03
(b) Define Transducer, Sensor and Actuator with example. 04
(c) Explain Thermistor & Thermocouple transducer for body temperature
measurement.
07
Q.2 (a) Draw construction of Ionization chamber & explain its working principle
for nuclear radiation detection.
03
(b) Explain any four static characteristics of Transducer. 04
(c) Derive the equation of Guage factor for Resistive strain gauge. Explain
Resistive strain gauges with its applications.
07
OR
(c) Explain any two types of capacitive transducers with its working principle
& applications.
07
Q.3 (a) Write a short note on Pyroelectric thermal sensor. 03
(b) A strain guage is bonded to a beam of 0.15 m long and has a cross sectional
area of 4 cm
2
. Young?s modulus for steel is 207 GN/m
2
. The strain guage
has an unstrained resistance of 250 ? and a guage factor of 2.2. When a load
is applied, the resistance of guage changes by 0.015 ?. Calculate the change
in length of the steel beam and the amount of force applied to the beam.
04
(c) Explain any two types of inductive transducers with its working principle &
applications.
07
OR
Q.3 (a) Explain construction & working of Photomultiplier cell for radiation
detection.
03
(b) Calculate the voltage generated across the electrodes of an electromagnetic
blood flow probe applied across a blood vessel of 2 cm diameter. The
magnetic flux density of probe is 1.5x10
-5
wb/m
2
. Assume volume flow rate
of 180 cm
3
/sec.
04
(c) Enlist & explain various transducers for liquid level measurement. 07
Q.4 (a) Enlist various chemical transducers for the measurement of ions & dissolved
gases.
03
(b) Explain construction of ISFET for glucose measurement. 04
(c) Explain construction & working of pCO2 electrode for blood pCO2
measurement.
07
OR
Q.4 (a) Write a short note on Half-cell Potential. 03
(b) What is pH? Explain pH measurement technique. 04
(c) Explain construction & working of pO2 electrode for blood pO2
measurement.
07
Q.5 (a) Explain Potentiometric transducer for linear & angular displacement
measurement.
03
(b) Explain indirect method of Blood pressure measurement. 04
FirstRanker.com - FirstRanker's Choice
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2140306 Date: 13/12/2019
Subject Name: Biosensors & Transducers
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Explain functioning of Chemoreceptors in Human body. 03
(b) Define Transducer, Sensor and Actuator with example. 04
(c) Explain Thermistor & Thermocouple transducer for body temperature
measurement.
07
Q.2 (a) Draw construction of Ionization chamber & explain its working principle
for nuclear radiation detection.
03
(b) Explain any four static characteristics of Transducer. 04
(c) Derive the equation of Guage factor for Resistive strain gauge. Explain
Resistive strain gauges with its applications.
07
OR
(c) Explain any two types of capacitive transducers with its working principle
& applications.
07
Q.3 (a) Write a short note on Pyroelectric thermal sensor. 03
(b) A strain guage is bonded to a beam of 0.15 m long and has a cross sectional
area of 4 cm
2
. Young?s modulus for steel is 207 GN/m
2
. The strain guage
has an unstrained resistance of 250 ? and a guage factor of 2.2. When a load
is applied, the resistance of guage changes by 0.015 ?. Calculate the change
in length of the steel beam and the amount of force applied to the beam.
04
(c) Explain any two types of inductive transducers with its working principle &
applications.
07
OR
Q.3 (a) Explain construction & working of Photomultiplier cell for radiation
detection.
03
(b) Calculate the voltage generated across the electrodes of an electromagnetic
blood flow probe applied across a blood vessel of 2 cm diameter. The
magnetic flux density of probe is 1.5x10
-5
wb/m
2
. Assume volume flow rate
of 180 cm
3
/sec.
04
(c) Enlist & explain various transducers for liquid level measurement. 07
Q.4 (a) Enlist various chemical transducers for the measurement of ions & dissolved
gases.
03
(b) Explain construction of ISFET for glucose measurement. 04
(c) Explain construction & working of pCO2 electrode for blood pCO2
measurement.
07
OR
Q.4 (a) Write a short note on Half-cell Potential. 03
(b) What is pH? Explain pH measurement technique. 04
(c) Explain construction & working of pO2 electrode for blood pO2
measurement.
07
Q.5 (a) Explain Potentiometric transducer for linear & angular displacement
measurement.
03
(b) Explain indirect method of Blood pressure measurement. 04
2
(c) Write a short note on Smart sensors. 07
OR
Q.5 (a) Write a short note on Hall effect transducer. 03
(b) Define Pneumotachometer. Explain basic working principle of
Pneumotachometer.
04
(c) Explain types of Thin film sensors in detail. 07
*************
FirstRanker.com - FirstRanker's Choice
This post was last modified on 20 February 2020