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What is the total voltage gain of a cascading transistor amplifier if the gain of first stage is 4 and the gain of the second stage is 10?(a) 0.4(b) 4(c) 40(d) 2.5This question was addressed to me at a job interview.Question is taken from Cascading Transistor Amplifiers topic in chapter Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits |
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Answer» RIGHT CHOICE is (c) 40 The explanation is: The total gain of a cascading transistor amplifier can be calculated by the FORMULA given below. Where, AV = overall gain, AV1 = voltage gain of first STAGE and AV2 = voltage gain of second stage. AV = AV1 × AV2 = 4 × 10 = 40 |
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