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Multiplexer Question & Answers

April 1, 2022 By WatElectronics

This article lists 50 Multiplexer MCQs for engineering students. All the Multiplexer Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on Multiplexer.

In the world of digital systems specifically in large-scale based digital systems, a combinational device that has ‘2n’ number of input and ‘n’ number output lines along with 2 power n selectors is called a mux or a multiplexer.

A multiplexer selects between 2 types of input signals namely analogue and digital. The
function of multiplexers is to amplify information and boost information. They are classified as 2by1, 4by1, 8by1, and 16by1 MUX.

The different types of multiplexing technologies include wavelength division multiplexing, add/drop multiplexing, inverse multiplexing, etc. They benefit in terms of minimum wires are required; zero K-maps and less circuit complexity.

The disadvantage of multiplexer includes additional IO ports, complex firmware, and single-port access at a time. The field of applications of multiplexers includes communication systems, computer memory, and telephone network.

1). A multiplexer is also called ___?
Hint3 names.
2). A multiplexer selects between ___ type of input signals?
Hint2 types.
3). A multiplexer has ___ number of inputs?
HintHigher value.
4). A multiplexer has ___ number of outputs?
HintOdd number.
5). Which of the following is the function of multiplexer?
Hint2 functions.
6). How many inputs does a 4by1 mux consist of?
HintEven number.
7). How many outputs does a 4by1 mux consist of?
HintOdd number.
8). How many inputs does 2 by 1 mux comprises of?
HintEven number.
9). How many outputs does 2 by 1 mux comprises of?
HintOdd number.
10). If inputs (a,b) is (0,0) for a 2by 1 mux with selector ‘0’. Then the output is ___?
HintLogic low.
11). If inputs (a,b) is (0,1) for a 2by 1 mux with selector ‘0’. Then the output is ___?
HintLogic high.
12). If inputs (a,b) is (1,0) for a 2by 1 mux with selector ‘1’. Then the output is ___?
HintLogic high.
13). If inputs (a,b) is (1,1) for a 2by 1 mux with selector ‘1’. Then the output is ___?
HintLogic high.

Multiplexer Interview Questions and Answers

14). A method of transmitting many signals over a specific medium is known as ____?
HintMultiple inputs single output line.
15). Which of the following are the types of multiplexing technologies?
Hint3 types.
16). Which of the following is the Analog type multiplexer?
Hint2 types.
17). Which of the following is the Digital type multiplexer?
Hint2types.
18).Which of the following are the applications of FDM?
HintCommunication appliances.
19). How many OR logic gates are required to design a 4by1 multiplexer?
HintOdd number.
20). How many AND logic gates are required to design a 4by1 multiplexer?
HintEven number.
21). Which of the following is the advantage of FDM?
Hint3 advantages.
22). Which of the following is the disadvantage of FDM?
Hint3 disadvantages.
23). A multiplexer is a ___ circuit?
HintA memory-less circuits.
24). ____ pin in MUX represents the connection between nby1 MUX?
Hinta nby1 MUX has n/2 pin.

Multiplexer Quiz Questions and Answers.

25). Which of the following is an example of non-electronic multiplexer circuit?
HintUni-pole based.
26). A multiplexer is constructed using ____ components?
HintElectronic components.
Read more about Electronic Circuits.
27). Which of the following are the components of Analogue type multiplexer?
Hint2 components.
28). Which of the following are the components of digital type multiplexer?
Hint0’s and 1’s operations are performed.
29). A multiplexers are classified in to ___ number of types?
HintEven number.
30). A 2by1 type of multiplexer has ___ number of selector lines?
Hint2 power n = 2; what is the value of n?
31). A 4by1 type of multiplexer has ___ number of selector lines?
Hintb-A 4by1 type of multiplexer has 2 number of selector lines
32). A 16by1 type of multiplexer has ___ number of selector lines?
Hint2 power n = 16; what is the value of n?
33). A 8by1 type of multiplexer has ___ number of selector lines?
Hint2 power n= 8; what is the value of n?
34). How many AND logic gates are required to design a 8by1 multiplexer?
Hint‘n’ number.
35). How many OR logic gates are required to design a 8by1 multiplexer?
HintOdd value.
36). Which of the following is the advantage of multiplexer?
Hint3 advantages.
37). Which of the following is the disadvantage of multiplexer?
Hint3 disadvantages.
38). Which of the following are the field of applications of multiplexers?
Hint3 and more application fields.
39). Which of the following electronic device has single input and multiple output?
HintA de-multiplexer is an electronic device has single input and multiple output.

Multiplexer MCQs for Exams

40). Which of the following are the advantages of Demux?
Hint3 advantages.
Read more about DeMUX.
41). Which of the following are the disadvantages of Demux?
Hint3 dis-advantages.
42). Which of the following are the applications of De-mux?
Hint3 applications.
43). A mux is a _____ component?
HintA 2by1 mux has one connector.
44). A De-mux is a _____ component?
HintUsed in digital type circuits.
45). A MUX is deployed in ___?
HintOn-Off operation.
46). ____ type conversion is observed in mux?
Hint2power n inputs, one output.
47). TDM type of mux is used at which end in communication?
HintSenders end.
Read more about TDM.
48). A De-MUX is deployed in ___?
HintCombination of electronic components.
49). Which of the following are the ICs of MUX?
HintOp-amp ICs.
50). Which of the following is the function of 74147 IC (MUX)?
HintMUX with 2 selector lines.
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