JNTU
JNTU B.Tech III ELECTRONIC MEASUREMENTS AND INSTRUMENTATION Previous Question Paper (November/December - 2018 - R13)
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
A set of independent current measurements were recorded as 10.05, 10.10, 10.11, 10.09. Calculate the range of an error.
Answer
The range of error is the difference between the maximum and minimum values in the set of measurements. Given values: 10.05, 10.10, 10.11, 10.09. Maximum value = 10.11, Minimum value = 10.05. Range = 10.11 - 10.05 = 0.06.
Mention the significance of measurements.
Answer
Measurements are essential for verifying theoretical predictions, ensuring quality control in manufacturing, and enabling the safe operation of systems. They provide the quantitative data required for analysis, calibration of instruments, and the advancement of scientific research and engineering design.
Define pulse width.
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What is a sweep frequency generator?
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What is known as fluorescence?
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What is the purpose of time base circuit in a CRO?
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What is piezoelectric effect?
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What is the principle of thermometer?
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What is meant by data acquisition?
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Give the applications of Kelvin’s bridge.
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Part B
Define and explain the following terms: Precision, Sensitivity, Accuracy, Repeatability, Observability.
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Explain about Volt meters with a neat block diagram.
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Define and explain with examples the different types of possible Errors in Measurement.
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Explain about Power Analyzer with neat Schematic.
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Explain about the operation of Pulse Generator.
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Explain in detail about Capacitance-Voltage Meters.
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Write in detail about RF Signal Generators.
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Explain with block diagram of dual beam oscilloscope.
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Discuss the high frequency CRO consideration.
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Write in detail about Sampling Oscilloscopes with a neat sketch.
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Write the applications of CRO.
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Discuss the specifications and applications of LVDT.
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Explain the operation of Thermocouples.
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Explain about Force Transducers with a neat diagram.
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Write about the principle of operation of Variable Capacitance Transducers.
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With the help of block diagram explain the data acquisition system.
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Explain about the Liquid level Measurement.
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Explain about the Flow Measurement in detail.
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With the help of circuit diagram explain the Wheat Stone Bridge.
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