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What is the purpose of using ann-stage cascading transistor amplifier?(a) Increase voltage gain(b) Decrease voltage gain(c) Increase current gain(d) Decrease current gainI have been asked this question during an interview.My question is based upon N-Stage Cascading Amplifiers in section Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

Answer»

Correct ANSWER is (a) Increase voltage gain

Easy explanation: A circuit having a single transistor AMPLIFIER does not provide SUITABLE bandwidth or gain. The PURPOSE of an n-stage cascading amplifier is to provide an increase in the voltage gain. The total gain of ann-stage cascading amplifier is the product of the voltage gains of the discrete stages.



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