The given electrical network is equivalent to

The given electrical network is equivalent to

1. AND gate
2. OR gate
3. NOR gate
4. NOT gate

Solution

Output at NOR gate $Y_1=\overline{A+B}$
The output of first NOR gate is input to the second NOR gate, so the output of second NOR gate is $Y_2=\overline{Y_1+Y_1}=\overline{Y_1}=\overline{\overline{A+B}}=A+B$
The output of NOT gate is $Y=\overline{Y_2}=\overline{A+B}$
The given electrical network becomes equivalent to the NOR gate.

Asked in: NEET 2017

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