The LVDT output represents what physical quantity?

• A. Position of the core
• B. Temperature
• C. Pressure
• D. Speed

Answer: (A)

LVDT output represents the position (displacement) of the ferromagnetic core along the sensing axis. As the core moves, the coupling to the secondary windings changes, producing a differential voltage that is proportional to how far the core has shifted. This means the signal encodes linear position, not temperature, pressure, or speed. LVDTs are used for precise position feedback in control systems and actuator travel measurements.