Electronics (ECE) - MCQ Practice Questions

Which of the following is NOT a basic logic gate?

The output of a NAND gate is 0 when:

How many 2-input NAND gates are required to implement a 2-input AND gate?

The truth table of which gate has odd number of 1s in output column for 2-input gate?

A combinational circuit with n inputs and m outputs is completely specified by:

What is the simplified form of the Boolean expression A + AB + ABC?

The decimal equivalent of binary number 10110.101 is:

In Gray code, consecutive numbers differ by:

What is the Hamming distance between binary numbers 1011101 and 1001001?

A multiplexer with 8 inputs requires how many select lines?

The BCD equivalent of decimal 47 is:

Which of the following Boolean expressions represents the majority function for 3 inputs?

In a 4-bit binary counter, after state 1111, the next state is:

A full adder has how many inputs and outputs?

For a Karnaugh map of 4 variables, what is the minimum number of cells needed to cover all minterms?

What is the maximum frequency of a synchronous counter if each flip-flop has a propagation delay of 10 ns?

An asynchronous counter with n flip-flops counts from 0 to:

In Mealy machine, the output depends on:

A JK flip-flop with J=1, K=1 performs:

For a 3-bit Johnson counter, the maximum count is: