In common emitter configuration, the phase difference between input and output voltage of a transistor is ________.

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  1. 90°
  2. 180°
  3. 270°

Answer (Detailed Solution Below)

Option 3 : 180°
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Detailed Solution

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Common Emitter Mode :

  • Medium input resistance
  • Medium output resistance
  • Current gain =HIgh
  • Voltage gain = high 
  • Phase shift = 180

Common Base Mode :

  • Low input resistance
  • High output resistance
  • Current gain =1
  • Voltage gain = high 
  • Phase shift = 0

Common Collector Mode :

  • High input resistance
  • Low output resistance
  • Current gain =High
  • Voltage gain = 1
  • Phase shift = 0
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