How do passive transducers develop electrical signals?(a) using a transformer(b) using internal source(c) using external source(d) using a diodeI have been asked this question in examination.This is a very interesting question from Classification of Transducers topic in portion Transducers of Electrical Measurements

How do passive transducers develop electrical signals?(a) using a tran

1.	How do passive transducers develop electrical signals?(a) using a transformer(b) using internal source(c) using external source(d) using a diodeI have been asked this question in examination.This is a very interesting question from Classification of Transducers topic in portion Transducers of Electrical Measurements
Answer» The correct answer is (c) using EXTERNAL source To explain I would say: Passive transducers develop electrical signals by means of an external source. They are usually KNOWN as externally POWER DRIVEN SOURCES.

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