JNTU
JNTU B.Tech IV SENSORS AND TRANSDUCERS 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 the purpose of measurement?
Answer
The purpose of measurement is to provide a quantitative comparison between an unknown quantity and a predefined standard unit, enabling the objective evaluation, control, and monitoring of physical parameters in engineering and scientific processes.
List the types of instrumental error.
Answer
Instrumental errors are primarily categorized as follows:
- Inherent shortcomings of the instrument (design or manufacturing defects).
- Misuse of the instrument (improper handling or operation).
- Loading effects (the effect of the instrument on the quantity being measured).
What is dynamic error?
Answer
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What is repeatability?
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Define the permittivity.
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Write the working principle of proving ring.
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What is the principle of capacitive transducer?
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What are the applications of LVDT?
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Give any applications of smart sensors.
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Define Hall Effect.
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Part B
What are the three categories of systematic errors in the instrument and explain in detail.
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Draw the block diagram of measuring system.
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Compare the between accuracy and precision.
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Explain the basic requirements of a sensor.
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Write the equations of various mathematical model of transducer, explain with diagram in detail.
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Discuss in detail the various static and dynamic characteristics of a measurement system.
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Explain the working of strain gauge.
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Explain the working of load cell.
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Explain about thermistors materials and its Constructions and Characteristics.
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Compare the self-inductive transducer and mutual inductive transducers.
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Explain the principle of RVDT with suitable diagram.
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Discuss about variable air gap type capacitive transducer with its diagram.
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Write the working principle of capacitor microphone.
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What is MEMS? Explain the advantages, disadvantages and applications of MEMS.
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Discuss about construction and working of digital transducers.
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Explain the construction and working of film sensors with neat sketch.
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Describe the working of piezoelectric transducer.
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