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UPSC ESE 2024 Electronics and Telecommunications Paper

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Question : 3 of 150

Marks: +1, -0

Consider the following statements regarding essential characteristics of a practical op-amp:
1. The open-loop voltage gain AOL is negatively infinite.
2. The input impedance between terminals 1 and 2 is infinitely large and the input current is zero.
3. The output impedance is zero and the output voltage is independent of the load.
Which of the above statements are correct?

1 and 2 only
2 and 3 only
1 and 3 only
1, 2 and 3

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