Consider the circuit given below
Choose the sketch depicting the output $Y$ of this circuit having inputs $A$ and $B$ as given below

• A

  
  
• B

  
  
• Correct answer
  C

  
  
• D

  
  

Solution

Truth table for the given diagram
From 0 to $t_2$, $$ A=1, B=1 \text {, so } Y=1 $$ From $t_1$ to $t_2$ $$ A=0, B=0 \text {, so } Y=0 $$ From $t_2$ to $t_3$, $$ A=1, B=0, \text { so } Y=0 $$ From $t_3$ to $t_4$, $$ A=0, B=1, \text { so } Y=0 $$ From $t_4$ to $t_5$, $$ A=1, B=1 \text {, so } Y=1 $$ From $t_5$ to $t_6$ $$ A=0, B=0 \text {, so } Y=0 $$

Hence, the correct answer is option: 'C'.