The Power amplifiers generally use transformer coupling because the transformer permits ________(a) Cooling of the circuit(b) Impedance Matching(c) Distortion less Output(d) Good Frequency ResponseThe question was posed to me in an online interview.The doubt is from Class B Output Stage in chapter Differential and Multistage Amplifiers of Electronic Devices & Circuits

The Power amplifiers generally use transformer coupling because the tr

1.	The Power amplifiers generally use transformer coupling because the transformer permits ________(a) Cooling of the circuit(b) Impedance Matching(c) Distortion less Output(d) Good Frequency ResponseThe question was posed to me in an online interview.The doubt is from Class B Output Stage in chapter Differential and Multistage Amplifiers of Electronic Devices & Circuits
Answer» RIGHT choice is (B) Impedance Matching To elaborate: The Power amplifiers generally USE transformer coupling because the transformer permits impedance matching. The disadvantage of impedance e matching is that it gives DISTORTED output.

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