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The most important consideration in power amplifier is ________

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The most important consideration in power amplifier is ________

(a) Biasing the circuit

(b) Impedance Matching

(c) Collector Efficiency

(d) To keep the transformer cool

I got this question in a national level competition.

Origin of the question is Class B Output Stage topic in section Differential and Multistage Amplifiers of Electronic Devices & Circuits

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The correct option is (c) Collector Efficiency

To elaborate: The most important consideration in power amplifier is Collector Efficiency. The pulsating DC applied to power amplifier causes hum in the circuit. For every stage of power amplifier, the collector efficiency is considered most important.

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