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What is the total voltage gain of a cascading transistor amplifier if input of first stage is 10V and the output of the second stage is 25V?(a) 0.4(b) 4(c) 40(d) 2.5The question was asked during an interview.Asked question is from Cascading Transistor Amplifiers topic in chapter Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

Answer»

The correct ANSWER is (d) 2.5

The BEST I can explain: The total GAIN of a cascading transistor amplifier is the ration of the output of second stage amplifier to the input of FIRST stage amplifier. Where, Voutput = 25V and Vinput = 10V.

AV = Voutput / Vinput = 25V / 10V = 2.5



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