In the circuit below,$A$ and $B$ represent two inputs and $C$ represents the output.

What is the output $D$ for the inputs $(A=0, B=0, C=0)$ and $(A=1, B=1, C=0)$ respectively?

Draw the output signals $C_1$ and $C_2$ for the given combination of gates as shown in the figure.

Given $A$ and $B$ are input terminals. Logic $1 = > 5 \ V$,Logic $0 = < 1 \ V$. Which logic gate operation does the above circuit perform?

$A$ building has two overhead water tanks, each fitted with a sensor $(S_1, S_2)$ which goes to $0$ when the water level in the tank falls below a set value and remains $1$ otherwise. $A$ common pump is used to raise water from an underground storage tank to these overhead tanks. Of the following circuits, which one will turn on $(P = 1)$ the pump only when at least one of the tanks has a water level below the set value?

Input waveforms $A$ and $B$ as shown in Fig-$I$ are applied to the combination of gates as shown in Fig-$II$. Which of the waveforms shown in Fig-$(i)$ to Fig-$(iv)$ correctly represents the output waveform $Y$?