Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech III VIRTUAL INSTRUMENTATION Previous Question Paper (May - 2019 - R16)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
What is GUI?
Answer
GUI stands for Graphical User Interface. It is a visual way for users to interact with a computer system or software using graphical icons, buttons, and menus rather than text-based command lines.
Illustrate Data flow programming.
Answer
Data flow programming is a paradigm where the execution of a program is determined by the availability of data. In LabVIEW, a node executes only when all its input terminals receive data. Once the node completes its operation, it passes the resulting data to the next node in the flow, making the sequence of operations dependent on data dependencies rather than a sequential line-by-line instruction set.
Explain “formula node” in LabVIEW.
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Demonstrate the use of Local variables using an example.
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Define Resolution of an ADC.
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Brief on “Signal isolation” during data acquisition.
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Why are handshaking lines used in some instrument interface?
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Describe OSI Model for networking.
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Explain the use of histogram in image processing.
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Elaborate on instrument control in virtual instrumentation.
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Part B
Explain the architecture of Virtual instrumentation with a neat diagram.
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Differentiate between traditional instrument and virtual instrument.
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What is real time system, give an example.
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Describe Arrays in LabVIEW, explain any two array functions in detail.
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Show the use of case structure in LabVIEW through an example.
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Summarize the importance of Instrument Drivers in Virtual instrumentation.
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Explain STRINGS in LabVIEW with example.
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Discuss each segment of Data Acquisition System in detail with block diagram.
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Explain the relevance of DMA to virtual instrumentation.
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Brief on instrument Calibration.
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What is current loop, comment on its popularity in industries as an instrument interface.
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Write short notes on PXI.
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Draw GPIB bus structure; explain its handshaking process with a timing diagram.
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Explain the procedure to simulate a system using graphical programming language.
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Give the block diagram for a Motion control system, explain in detail.
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