If a three-stage amplifier has individual stage gains of 10 db, 5 db and 12 db, then total gain in db is____________?
Correct answer: D. 27 db
- A. 600 db
- B. 24 db
- C. 14 db
- D. 27 db
Explanation
Decibel gains of cascaded amplifier stages add directly: 10 + 5 + 12 = 27 dB. Multiplying the corresponding linear gains would give the same result after converting back to decibels.
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