Question:
Which of the following transducers is most suitable for measuring very small displacements?
Which of the following transducers is most suitable for measuring very small displacements?
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LVDTs are preferred for precision displacement measurement due to their high sensitivity, accuracy, and frictionless operation.
Updated On: Feb 7, 2026
- LVDT
- Strain gauge
- Piezoelectric transducer
- Thermistor
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the requirement of the question.
The question asks for a transducer that is most suitable for measuring very small linear displacements. Such a transducer should have high sensitivity, good accuracy, and excellent resolution for minute movements.
Step 2: Analyzing the options.
(A) LVDT: A Linear Variable Differential Transformer (LVDT) is specifically designed to measure linear displacement. It offers very high sensitivity, frictionless operation, and can detect extremely small changes in position with high accuracy.
(B) Strain gauge: A strain gauge measures strain (deformation) in materials and is not directly used for precise displacement measurement.
(C) Piezoelectric transducer: Piezoelectric transducers are mainly used for dynamic measurements such as vibration and pressure, not for static or very small displacements.
(D) Thermistor: A thermistor measures temperature changes and is not related to displacement measurement.
Step 3: Conclusion.
Since LVDT is specifically designed for accurate measurement of very small linear displacements, it is the most suitable choice.
The question asks for a transducer that is most suitable for measuring very small linear displacements. Such a transducer should have high sensitivity, good accuracy, and excellent resolution for minute movements.
Step 2: Analyzing the options.
(A) LVDT: A Linear Variable Differential Transformer (LVDT) is specifically designed to measure linear displacement. It offers very high sensitivity, frictionless operation, and can detect extremely small changes in position with high accuracy.
(B) Strain gauge: A strain gauge measures strain (deformation) in materials and is not directly used for precise displacement measurement.
(C) Piezoelectric transducer: Piezoelectric transducers are mainly used for dynamic measurements such as vibration and pressure, not for static or very small displacements.
(D) Thermistor: A thermistor measures temperature changes and is not related to displacement measurement.
Step 3: Conclusion.
Since LVDT is specifically designed for accurate measurement of very small linear displacements, it is the most suitable choice.
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