Electronics (ECE) - MCQ Practice Questions

In an n-channel depletion-mode MOSFET with Vto = -3 V, if VGS = 0 V, the device is in which region?

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?

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

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:

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:

In a synchronous counter design, what is the main advantage over asynchronous counters?

In Booth's multiplication algorithm, which sequence of multiplier bits requires the fewest operations?

What is the setup time in a flip-flop?

For a modulo-6 counter using JK flip-flops, how many flip-flops are required at minimum?

Which multiplexer configuration is used to implement any Boolean function with minimum gates?

A 4-bit binary subtractor using 2's complement method requires:

In a magnitude comparator for 4-bit numbers, if A > B, A = B, and A < B outputs are provided, what is the total number of output combinations possible?

What is the hold time in a flip-flop, and why is it critical?

In a cascaded 4-bit counter system where two 4-bit counters are connected, what maximum count value can be achieved?