Ph.D. Course Work Examination June July 2017
ELECTRONICS (Paper II)
Recent Trends in Electronics
Day Date: Wednesday, 28-06-2017 Max. Marks: 100
Time: 11.00 AM to 02.00 PM
Instructions: All questions are compulsory.
Q.1 What is humidity? What is its role in agriculture? Explain the role of
instrumentation in agriculture.
10
Answer Any Two:
Explain the different types of pH electrodes available in the
market?
05
Explain the principle and working of O2 sensor. 05
Explain the application of wired network for green house. 05
Q.2 Discuss development of VI using GUI with an example. 10
Answer Any Two:
Explain the construction and working of PC based temperature
control system.
05
Describe the working principle of SY-HS 220. 05
Explain the block diagram and architecture of virtual
instrumentation.
05
Q.3 Give the comparison between virtual instrumentation and traditional
instrumentation and explain advantages of virtual instrumentation.
10
Answer Any Two:
Explain data flow techniques in VI. 05
Describe graphical programming in data-flow. 05
What is LABVIEW? How LABVIEW can be used for agriculture? 05
Q.4 What are signals? Explain different types of signals and represent
them in mathematical form.
10
Answer Any Two:
Derive the mathematical model of a mechanical system. 05
With an example explain modeling of hydraulic system. 05
Write a note on liner and non-linear systems. 05
Q.5 Explain the continuous and discrete time signals with mathematical
expressions.
10
Answer Any Two:
Explain briefly complex exponential sinusoidal signals. 05
Write a short note on fluid systems. 05
Explain how the Fourier series can be used to analyze the
continuous time signal.