JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV ELECTRONIC MEASURING INSTRUMENTS Previous Question Paper (July - 2023 - R16)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
What is Resolution?
Answer
Resolution is the smallest change in the input signal that an instrument can detect and display. It represents the smallest increment of the measured value that can be distinguished by the output scale or digital readout.
Define the Fidelity and Lag.
Answer
Fidelity is the ability of an instrument to reproduce the changes in the input signal faithfully without any dynamic error. Lag is the time delay between the application of an input signal and the corresponding response of the instrument's output.
What are the specifications of AF generators?
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Write the applications of sweep frequency generators.
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What is automatic ranging in DMM?
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What are the essential parts of a ramp type digital voltmeter?
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What is servo transducer?
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Write the applications of FM method of magnetic tape recording.
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Define transducer?
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Explain the working of thermocouples.
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Part B
Describe the different types of errors occurs in measurement with one example.
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List out the dynamic characteristics of any measurement system.
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What are the different static characteristics of a measurement system? Explain detail.
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What is dynamic error? Plot it with respect to time delay.
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Draw the block diagram and explain the operation of arbitrary waveform generator with suitable example.
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Explain about the working of pulse wave generator.
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Discuss the basic principle of RF Signal Generator.
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Write short notes on the following with respect to CRO.
a) Delay line. b) Sync Selector circuit. c) CRO probes.
Delay line.
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Sync Selector circuit.
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CRO probes.
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Describe in detail the Lissajous method of frequency measurement.
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Draw and explain solid state DC Voltmeter.
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Write the basic operating principle of digital tape recording.
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What are the various methods of recording data?
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Draw a neat diagram of X-Y recorder and explain its working in detail.
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Explain the construction and working of a strain gauge in detail.
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Discuss about working of hotwire anemometers.
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Explain the working of LVDT in detail.
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