Question:medium

The maximum efficiency of a class A series-fed amplifier is

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Remember the standard efficiencies: \[ \text{Class-A (Series-fed)} = 25% \] \[ \text{Class-A (Transformer coupled)} = 50% \] \[ \text{Class-B Push Pull} = 78.5% \]

Updated On: Jun 25, 2026

\(25%\)
\(50%\)
\(78.5%\)
\(82.3%\)

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The Correct Option is A

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