Correct Answer - Option 4 : Radiation Sensors
A sensor and a transducer are used to sense a change within the environment they are surrounded by or an object they are attached to.
The main difference between a sensor and a transducer is the output signal.
A sensor will give an output in the same format and a transducer will convert the measurement into an electrical signal.
All the sensors are not transducers. All Transducers contain a Sensor.
Characteristics of a sensor
Sensors are defined as a device which is used to measure a physical quality - for example - light, sound, temperature etc. and give the output in an easy to read format for the user.
Radiation detectors, also called radiation sensors, are instruments that sense and measure radiation emissions or levels of radiation produced by a source.
Characteristics of a transducer
A transducer can measure similar qualities to a sensor but will convert the signal from one physical form to another meaning their input and output signals are not the same as each other. Transducers are sometimes referred to as energy converters.
- A microphone convert sound into an electrical signal so it can be amplified, recorded, or transmitted.
- A loudspeaker is an electroacoustic transducer; a device which converts an electrical audio signal into a corresponding sound.
- A microchip is used in microcontroller based transducer.
So all options are transducer except Option(4).
