Combinational Logic Circuits MCQ Quiz Questions and Answers Pdf - 1

Question: 1

A multiplexer with a 4 bit data select input is a

(A) 2 : 1 multiplexer

(B) 4 : 1 multiplexer

(C) 8 : 1 multiplexer

(D) 16 : 1 multiplexer

Ans: D

16 : 1 multiplexer

Question: 2

In which of the following adder circuits, the carry look ripples delay is eliminated?

(A) Carry look ahead adder

(B) Half adder

(C) Full adder

(D) Parallel adder

Ans: A

Carry look ahead adder

Question: 3

How many truth tables can be made from one function table?

(A) One

(B) Two

(C) Three

(D) Four

Ans: B


Question: 4

Which of the following unit will choose the transform decimal number to binary code?

(A) Demultiplexer

(B) Multiplexer

(C) Encoder

(D) Decoder

Ans: C


Question: 5

Astable multivibrator are used as

(A) Voltage to frequency converter

(B) Frequency to voltage converter

(C) Squaring circuit

(D) Comparator circuit

Ans: A

Voltage to frequency converter

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