Active transducers are devices that convert one form of energy into another, with the ability to modify the characteristics of the input signal. In the case of active transducers, they specifically convert a non-electrical quantity or parameter into an electrical signal. The correct option is 'B' because active transducers develop electrical parameters.

Let's delve into the details of active transducers and their operation to understand why this is the correct answer.

Understanding Active Transducers:
Active transducers are electronic devices that convert a non-electrical quantity or parameter into an electrical signal. They are capable of generating an output signal that is proportional to the input parameter being measured. These transducers typically include electronic circuits and power supplies, which enable them to amplify and modify the input signal.

Operation of Active Transducers:
To convert a non-electrical parameter into an electrical signal, active transducers follow a specific operating principle. They consist of a sensing element that is directly influenced by the non-electrical parameter being measured. This sensing element undergoes a physical change or modulation when exposed to the non-electrical parameter.

Key Points:
1. Active transducers convert a non-electrical parameter into an electrical signal.
2. They consist of a sensing element that is influenced by the non-electrical parameter.
3. The sensing element undergoes a physical change in response to the non-electrical parameter.
4. Electronic circuits and power supplies within active transducers amplify and modify the input signal.
5. The output signal generated by active transducers is proportional to the input parameter being measured.

Conclusion:
Active transducers play a crucial role in various applications where non-electrical parameters need to be converted into electrical signals for further processing and analysis. By developing electrical parameters, active transducers enable the measurement, monitoring, and control of different physical, mechanical, chemical, and biological parameters. Their ability to modify and amplify the input signal makes them versatile devices in industries such as healthcare, automotive, aerospace, and many more.