Question

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.
• C.
• D.

Answer 1

Answer: (C)

Truth table for the given diagram

A	B	A.B	Y
0	0	1	0
1	0	1	0
0	1	1	0
1	1	0	1

From 0 to $t_1$
$A=1,B=1,\text{ so }Y=1$
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 $t_6$
$A=0,B=0,\text{ so }Y=0$