GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- VII (New) EXAMINATION — WINTER 2019
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Subject Code: 2170808 Date: 28/11/2019
Subject Name: Sensor Networks & Instrumentation
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Explain V-I converters using OP-AMP. 03
(b) What is Negative Feedback? What are its advantages? 04
(c) What is Sensor? Give classification of sensors with respect to various parameters. 07
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Q.2 (a) Explain KRC filters. 03
(b) Explain Humidity sensors in details. 04
(c) Explain first order low pass filter and derive all equations with neat figure 07
OR
(c) Explain Second Order Band Pass Filter in detail 07
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Q.3 (a) Explain Multiple Feedback filters. 03
(b) Explain Capacitive sensor. 04
(c) How to select a Sensor? Explain selection of sensor in detail. 07
OR
Q.3 (a) Explain Temperature Sensor in detail 03
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(b) Explain I to V converter. 04
(c) Explain with neat sketch CO2 Sensing techniques with necessary equations and graphs. 07
Q.4 (a) Explain characteristics of an Ideal OP-AMP. 03
(b) Explain Zigbee Network. 04
(c) Explain general architecture of smart sensor. 07
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OR
Q.4 (a) Explain Block Diagram of OP-AMP. 03
(b) What is the application area of Smart Sensors? 04
(c) Explain various factors influencing WSN design. 07
Q.5 (a) What is wireless sensor network? 03
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(b) Explain loading effect on sensors output 04
(c) Explain First Order RC filters and derive its equations 07
OR
Q.5 (a) Explain Cascade design for Active Filters. 03
(b) Derive equations for KRC filters. 04
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(c) Explain Transducer Bridge Amplifier using Op-Amp with Application. 07
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