Answer / sonia

its an operational amplifier; an IC with 8 pins producing
an amplified output of the differential inputs, V+ and V-.
The output is Vout = (V+ - V-)G, where G is the open loop
gain. The magnitude of G is controlled by the manufacturer,
whose value is in the range of million. So, even if the
input is very less, in microvolts range, output will attain
amplifier saturation.

Pz let me inform the syllabus of oces/dgfs-2010 syllabus and old question paper of B.Tech.electronics

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