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The output stage of a multistage amplifier usually employs ________

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The output stage of a multistage amplifier usually employs ________

(a) Push-pull amplifier

(b) Preamplifier

(c) Class A power amplifier

(d) Class B power amplifier

The question was asked in an interview for internship.

I would like to ask this question from Class B Output Stage in division Differential and Multistage Amplifiers of Electronic Devices & Circuits

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Best answer
Right choice is (a) Push-pull amplifier

Easiest explanation: In push-pull mode; one transistor conducts one half cycle and the other transistor conducts the other half cycle. The output from both transistors are then combined together to get a scaled replica of the input.

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