Answer / sachin prajapati

All sensors are transducers but all transducers are not sensors.
By definition a transducer is any device that converts one form of energy into another. While sensors are usually related to transducers, anything that fits in that definition is considered a transducer (a microphone, a power generator, a strain gauge, a photoresistor

Answer / muktesh shah

Transducer converts one form of energy into another form & 
Sensor converts one form of energy into electric energy I.e. current, voltage etc.
so all sensors are transducers but all transducer are not sensors.

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