Question

The given electrical network is equivalent to :

• A. OR gate
• B. NOR gate
• C. NOT gate
• D. AND gate

Answer 1

Answer: (B)

$y_1=\overline{A+B}$
$y_2=\overline{y_1+y_1}=\overline{y_1}=\overline{\overline{A+B}}=A+B$
$y=\overline{y_2}=\overline{A+B}$