Which among the following is a/an dependent source?

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PGCIL DT Electrical 22 Aug 2021 Official Paper (SR II)
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  1. DC generator
  2. Transistor
  3. Alternator
  4. Battery

Answer (Detailed Solution Below)

Option 2 : Transistor
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There are two kinds of voltage or current sources:

Independent SourceIt is an active element that provides a specified voltage or current that is completely independent of other circuit variables.

The symbol for independent voltage and curent source:

F1 S.B Madhu 19.03.20 D2

Example: Alternator, DC generator, Battery

Dependent SourceIt is an active element in which the source quantity is controlled by another voltage or current in the circuit.

The symbol for dependent voltage and current source:

F1 S.B Madhu 19.03.20 D1

Example: Transistor (BJT, FET), Amplifier etc

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