JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III VIRTUAL INSTRUMENTATION Previous Question Paper (May/June - 2019 - R15)
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 ? Give its salient features.
Answer
GUI stands for Graphical User Interface, which allows users to interact with electronic devices through graphical icons and visual indicators. Its salient features include ease of use, intuitive navigation, visual feedback, and the ability to represent complex data through charts, graphs, and interactive controls.
Write the advantages of Lab View over conventional programming.
Answer
LabVIEW offers several advantages over conventional text-based programming: it uses a graphical dataflow language that simplifies parallel processing, provides extensive built-in libraries for data acquisition and instrument control, and significantly reduces development time through intuitive drag-and-drop interface design.
Explain the working of Shift register in VI programming.
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State arrays and explain about the concept of an array.
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Write the Sampling fundamentals in PC data acquisition.
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Explain the working of R-2R ladder type D/A converter.
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What is firewire? Write its features
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Explain the GPIB bus and its specifications
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List the applications of Virtual Instrumentation.
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Write the steps involved in development of VI based control system.
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Part B
Explain the historical perspective and evolution of virtual instrumentation.
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Explain in brief about development of real time systems using Lab VIEW.
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Explain the graphical programming in data flow and compare its operational performance with conventional data flow programming.
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Explain in detail some of the recent instrument technologies used for instrumentation.
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Explain the use of shift registers in FOR loop and WHILE loop with suitable diagrams.
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Explain the formula nodes, string and file I/O with suitable diagrams.
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Explain various methods of clustering with sketches.
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Explain the various methods of publishing data in web using VI programming.
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Explain in detail about the components of DAQ system.
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Explain the hardware and software requirements for interfacing DMA cards in PC based instrumentation.
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What are the functional blocks of DAQ signal accessory? Explain the functions of each.
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Explain in detail how data acquisition is done in Lab VIEW.
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Write the chassis requirements for instrument interfacing of a virtual instrument system and mention some common interfaces used in PC based instrumentation.
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Write the need for a current loop and explain in detail about 20 mA current loop interface and its applications and limitations.
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Draw the schematic of RS 232C and USB bus standards and their features in detail.
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Discuss PCI and PXI interface standards and compare their performance.
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Discuss the steps involved in the development Lab VIEW-based data base management system.
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Explain the basic concepts of distributed I/O modules.
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Explain the application of virtual instrumentation in instrument control.
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Explain in detail about applications of virtual instrumentation in industrial communication with typical examples.
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