If \(a, b, c, d\) are inputs to a gate and \(x\) is its output, then, as per the following time graph, the gate is:

1. NOT
2. AND
3. OR
4. NAND

The logic gate equivalent to the given logic circuit is:

1. AND
2. OR
3. NOR
4. NAND

The truth table for the circuit given in the fig. is:
           

In the following digital circuit, what will be the output at \('Z'\), when the input \((\mathrm {A,B})\) are \((1,0), (0,0),(1,1),(0,1)\):

Identify the operation performed by the circuit given below:

1. \(\text{OR}\)
2. \(\text{NOT}\)
3. \(\text{NAND}\)
4. \(\text{AND}\)

The logic circuit shown above is equivalent to :

1.
2.
3.
4.

The truth table for the following logic circuit is :

Draw the output signal \(Y\) in the given combination of gates :

1.
2.
3.
4.