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Operational amplifiers are

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Operational amplifiers are

(a) Differential input and single-ended output type amplifier

(b) Single-ended input and single-ended output type amplifier

(c) Single-ended input and differential output type amplifier

(d) Differential input and differential output type amplifier

I had been asked this question during an online interview.

This is a very interesting question from The Ideal Operational Amplifiers topic in chapter Operational Amplifiers of Electronic Devices & Circuits

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Best answer
Right option is (a) Differential input and single-ended output type amplifier

Easy explanation: It is another way to refer to op amps based on its terminal characteristics.

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