JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III ELECTRONIC MEASUREMENTS AND INSTRUMENTATION Previous Question Paper (May/June - 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
List types of errors.
Answer
Errors in measurements are classified into three main types: Gross errors (human mistakes), Systematic errors (instrumental, environmental, or observational), and Random errors (unpredictable variations).
How do you extend the range of ammeter?
Answer
The range of an ammeter is extended by connecting a low-resistance component called a shunt resistor in parallel with the meter movement. This allows the majority of the current to bypass the meter, enabling the measurement of currents higher than the meter's full-scale deflection capacity.
What is the principle of heterodyne wave analyzer?
Answer
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What is the arbitrary wave generator?
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What are the applications of CRO?
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What is the need of Delay line in CRO?
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Classify the transducers.
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Give the principle of Thermocouple and mention its application.
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What is the need of bridges in measuring systems?
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List important blocks of data Acquisition system.
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PART - B
What are the types of Ohmmeter? Describe them.
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Explain the working of True RMS responding Voltmeter with a neat sketch.
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What are the Static characteristics of measuring systems? Define them.
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Describe the D’Arsonval principle.
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What is the need of power analyzers? Explain.
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Draw the block diagram of function generator and explain the function of each block.
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Describe the working of RF Signal generator.
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Draw the block diagram AF wave analyzer and explain its working.
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Draw the Block schematic of CRO and explain function of each block.
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Describe the working principle of Sampling Oscilloscopes.
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How do you measure Time and Frequency using CRO? Explain.
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Compare and contrast sampling and storage oscilloscopes.
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Describe the working principle of Bounded strain gauged.
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What is the function of Piezo electric transducer? Mention its advantages and applications.
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Describe the working of LVDT and mention its applications.
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Explain about Magneto-strictive transducers and mention its limtation.
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Explain how could you measure resistance using Wheat stone bridge and derive relation for unknown resistance.
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How do you measure liquid level? Explain.
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How do you measure Velocity? Explain.
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Discuss about Displacement meters.
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