Which of the following can act as an inverse transducer?

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ESE Electronics 2015 Paper 1: Official Paper
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  1. LVDT
  2. Strain Gauge
  3. Piezo electric crystal
  4. Bimetal strip

Answer (Detailed Solution Below)

Option 3 : Piezo electric crystal
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Detailed Solution

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The inverse transducer is defined as a device that converts an electrical quantity into a non-electrical quantity.

A piezoelectric crystal acts as an inverse transducer because when a voltage is applied across its surfaces, it changes its dimensions causing a mechanical displacement.

Note:

A piezoelectric sensor is a device that uses the piezoelectric effect to measure changes in pressure, acceleration, temperature, strain, or force by converting them to an electrical charge. It is used to measure displacement.

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