Q. For a logic gate $A\&B$ are input and $C$ is output voltage waveform then logic gate is :-

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A

OR

B

AND

C

NOR

D

NAND

Solution:

Truth table
$A & B & C \\ 0 & 0 & 0 \\ 1 & 1 & 1 \\ 0 & 1 & 0 \\ 1 & 0 & 1 \\ 0 & 0 & 0 \\ 1 & 1 & 1 \\ 0 & 0 & 0$
Here $C=1$ only when $A=1,B=1\&C=0$ for all other cases so It is $C=A.B$ , So its an AND gate

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