NEET Physics Semiconducting Devices NEET PYQ-Semiconducting Devices

The truth table given below:                                                                                                       [AIPMT 2000]

Inputs Output

A B Y

0 0 0

1 0 0

0 1 0

1 1 1

            represents:

A) AND gate

B)    NOR gate

C)      OR gate

D) NAND gate

Correct Answer: A

Solution :

We can see from the truth table that output is 1 only when its both inputs are 1.

This is only possible for AND gate. The Boolean expression for AND gate is

\[Y=A\cdot B\]

which satisfies the truth table as below:

\[0.0=0\]

\[1.0=0\]

\[0.1=0\]

\[1.1=1\]

Here symbol \[(\centerdot )\] represents AND operation.