Electronics (ECE) - MCQ Practice Questions

In a multiplexer (MUX) with 3 select lines, how many input lines can it handle?

A demultiplexer (DEMUX) with 4 select lines has how many output lines?

Which type of flip-flop has the simplest truth table and is used for frequency division?

Which of the following is a volatile memory?

Which of the following is a sequential circuit?

In state machine design, if a machine has 15 different states, the minimum number of flip-flops needed is?

In a 3-to-8 decoder, if the binary input is 101, which output line will be activated?

Which of the following logic gates has an output of 1 only when both inputs are different?

What is the Boolean expression for a 2-input NAND gate?

In a Multiplexer (MUX), how many select lines are required for an 8:1 MUX?

What is the primary purpose of using parity bits in error detection?

Which semiconductor memory loses its data when power is switched off?

What is the truth table output for a D flip-flop when CLK = 1 and D = 1?

What is the output of a full adder when A=1, B=1, and Cin=1?

In a 8×4 RAM configuration, what do 8 and 4 respectively represent?

In a JK flip-flop, what happens when both J and K inputs are 1?

A multiplexer with 16 inputs requires how many select lines?

In a 3-bit binary counter, how many clock pulses are needed to complete one full cycle?

Which of the following is a non-volatile memory type commonly used in embedded systems?