Red Seal Electrician Practice
Meters and troubleshootingQuestion 1202 of 1506

Why is an LVDT better than a potentiometer for sensing position?

  1. It works on DC only.
  2. There is no physical contact, so no wear.
  3. It has no coils.
  4. It needs no supply.
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Correct answer: There is no physical contact, so no wear.

The core slides inside a tube and does not touch the windings.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 12.6: AC Instrumentation Transducers

Practice meters and troubleshooting

Questions last reviewed: 18 October 2026