గెయిన్ 10 మరియు 25 ప్రతి రెండు యాంప్లిఫైయర్లు క్యాస్కేడ్ చేయబడ్డాయి. మొదటి యాంప్లిఫైయర్కు ఇన్పుట్ వోల్టేజ్ 10 mV అయితే, రెండవ దశ అవుట్పుట్ _______ అవుతుంది.

This question was previously asked in
RRB ALP Mechanic Radio & TV 23 Jan 2019 Official Paper (Shift 3)
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  1. 25 V
  2. 2.5 వి
  3. 125 V
  4. 100 V

Answer (Detailed Solution Below)

Option 2 : 2.5 వి
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సాధన:

మొదటి యాంప్లిఫైయర్ యొక్క లాభం, V1 = 10

రెండవ యాంప్లిఫైయర్ యొక్క లాభం, V2 = 25

రెండు-దశల క్యాస్కేడ్ యాంప్లిఫైయర్ యొక్క మొత్తం వోల్టేజ్ లాభం రెండు దశల వోల్టేజ్ లాభాల ఉత్పత్తి ద్వారా ఇవ్వబడుతుంది, అనగా,

V = V1 x V2

= 250

ఇన్‌పుట్ సిగ్నల్ వోల్టేజ్, Vi = 10 mV=0.01 V

రెండవ దశ యొక్క అవుట్‌పుట్ = Vo

Vo=2.5 V

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