Neet Solved Paper 2013 Question 45
Question: The output (X) of the logic circuit shown in figure will be
Options:
A) $ X=\overline{\overline{A}}\cdot \overline{\overline{B}} $
B) $ X=\overline{A\cdot B} $
C) $ X=A\cdot B $
D) $ X=\overline{A+B} $
Show Answer
Answer:
Correct Answer: C
Solution:
$ X=\overline{\overline{AB}}=A\cdot B $ (i.e., AND gate)
If the output X of NAND gate is connected to the input of NOT gate (made from NAND gate by joining two inputs) from the given figure then we get back an AND gate.
