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VIT Engineering VIT Engineering Solved Paper-2015

  • question_answer
    To get an output y = 0 from the circuit shown in the figure, the input C must be                    

    A) 0                                             

    B) 1

    C) either 0 or 1                       

    D) None of these

    Correct Answer: A

    Solution :

    The output of OR gate is                      Y = A+ B The output of AND gate is                     Y? = Y . C \[=MB\left( 1-\frac{1}{\sqrt{2}} \right)=\left( \frac{\sqrt{2}-1}{\sqrt{2}} \right)MB\]            Y?= (A + B) . C IF C = 0 irrespective of A and B, then output Y must be zero.


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