Question:
The displacement measuring instruments is
The displacement measuring instruments is
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LVDT stands for Linear Variable Differential Transformer.
The term "Linear" in its name directly indicates its function of measuring linear displacement.
The term "Linear" in its name directly indicates its function of measuring linear displacement.
Updated On: Jul 6, 2026
- thermocouple
- LVDT
- RTD
- Thermistor
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Question:
We need to identify which of the given sensor options is specifically designed to measure physical displacement.
Step 2: Detailed Explanation:
• Let us analyze each of the options:
• Option (A) Thermocouple: A temperature transducer that generates a voltage proportional to the temperature difference between two junctions of dissimilar metals (Seebeck effect).
• Option (B) LVDT (Linear Variable Differential Transformer): An electromechanical transducer that converts the rectilinear motion (displacement) of a ferromagnetic core into a proportional AC electrical signal.
• Option (C) RTD (Resistance Temperature Detector): A temperature sensor that operates on the principle that the electrical resistance of a metal increases predictably with temperature.
• Option (D) Thermistor: A temperature-sensitive semiconductor resistor whose resistance changes significantly with temperature.
• Comparing these devices, only the LVDT is designed for measuring linear displacement.
Step 3: Final Answer:
The displacement measuring instrument among the options is LVDT.
We need to identify which of the given sensor options is specifically designed to measure physical displacement.
Step 2: Detailed Explanation:
• Let us analyze each of the options:
• Option (A) Thermocouple: A temperature transducer that generates a voltage proportional to the temperature difference between two junctions of dissimilar metals (Seebeck effect).
• Option (B) LVDT (Linear Variable Differential Transformer): An electromechanical transducer that converts the rectilinear motion (displacement) of a ferromagnetic core into a proportional AC electrical signal.
• Option (C) RTD (Resistance Temperature Detector): A temperature sensor that operates on the principle that the electrical resistance of a metal increases predictably with temperature.
• Option (D) Thermistor: A temperature-sensitive semiconductor resistor whose resistance changes significantly with temperature.
• Comparing these devices, only the LVDT is designed for measuring linear displacement.
Step 3: Final Answer:
The displacement measuring instrument among the options is LVDT.
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