Question

Which of the following is an inverse transducer?

• A. Piezoelectric
• B. Thermistor
• C. Photovoltaic cell
• D. LVDT

Hint:

Inverse transducers are typically used in actuators, where electrical energy is converted into mechanical motion or force.

Answer 1

The Correct Option is A

An inverse transducer is one that converts electrical energy into mechanical energy. The piezoelectric transducer is an example of an inverse transducer.
- Piezoelectric materials generate an electrical charge when subjected to mechanical stress, but when the polarity is reversed, they can produce mechanical displacement upon application of an electrical signal. Hence, it is an inverse transducer.
- Thermistors, Photovoltaic cells, and LVDTs are direct transducers, as they convert one form of energy directly into another without any reversal.