Q. If a three stage amplifier has individual stage gains of 10db, 6db and 15db; then the total gain in db is __

A
600 db
B
24 db
C
14 db
D
31 db
Solution:

The overall gain of a multistage amplifier is given as the product of the gain of the individual stages.
Gain (A) = A1 A2 A3 ? An
Alternately, if the gain of each stage is given in db
The overall gain of the amplifier is the sum of gain of each stage
Gain in db = A1 + A2 + A3 (db)
= 10+6+15 = 31db.

Entri Contact Image

Get Expert Advice for Free: Register for Your Free Consultation Now!