Electrical Engg (EEE) - MCQ Practice Questions

Which of the following logic gates produces output 1 only when all inputs are 1?

What is the Boolean expression for XOR gate with inputs A and B?

How many flip-flops are required to design a MOD-16 counter?

Which number system is most commonly used in digital electronics for representing data?

What is the decimal equivalent of binary number 10110₂?

Which of the following is a sequential logic circuit?

In a JK flip-flop, when J=1 and K=1, the next state will be:

What is the fan-out of a logic gate?

Which digital logic family has the highest speed of operation?

The number of logic levels required to represent 32 different states in binary is:

What is the main advantage of CMOS logic over TTL?

A 4-to-1 multiplexer has inputs A, B, C, D and select lines S₁, S₀. If S₁=0 and S₀=1, which input is selected?

In Karnaugh map simplification, a group of 8 adjacent cells eliminates how many variables?

What is the primary function of an encoder in digital electronics?

A synchronous counter differs from asynchronous counter in that:

Which of the following Boolean expressions is equivalent to (A+B)·(A+C)?

In a 3-bit binary counter with initial state 000, after 9 clock pulses, the state will be:

Design a circuit using NAND gates only to implement NOR function. How many NAND gates are minimum required?

A decade counter counts from 0 to 9. To design a decade counter from a binary counter, how many flip-flops minimum are needed along with additional logic?

In a 4-bit ripple counter, the maximum frequency that can be counted is limited by the: