This set of Instrumentation Transducers Multiple Choice Questions & Answers (MCQs) focuses on “Multiplexers and Demultiplexers”.
1. Which of the following is correct for multiplexer?
a) Several inputs and single output
b) Single input and several outputs
c) Single input and single output
d) Several inputs and several outputs
View Answer
Explanation: Multiplexer has several inputs and a single output line and it is used for data selection.
2. Multiplexers work with ________________
a) Analog signal
b) Digital signal
c) Both analog and digital signal
d) None of the mentioned
View Answer
Explanation: Multiplexers work with both analog and digital signals.
3. TDM stands for _________________
a) Time direct measurement
b) Time division multiplexing
c) Time direct multiplexing
d) Time division measurement
View Answer
Explanation: TDM or Time division multiplexing is a type of multiplexing.
4. Which of the following is analogous to multiplexer?
a) Data selector
b) Data multiplexer
c) Data filter
d) None of the mentioned
View Answer
Explanation: Multiplexer is similar to data selector which is used to select data from multiple input data.
5. Which of the following represent multiple input single output switch?
a) Multiplexer
b) De multiplexer
c) Both multiplexer and demultiplexer
d) None of the mentioned
View Answer
Explanation: Multiplexer select one data line among multiple data lines and they represent multiple input single output switch.
6. Schematic symbol of multiplexer is __________________
a) Isosceles triangle
b) Isosceles trapezoid
c) Equilateral triangle
d) Rectangle
View Answer
Explanation: Multiplexer and demultiplexer is schematically represented using isosceles trapezoid.
7. In digital multiplexer selector line is _______________
a) Analog value
b) Digital value
c) Unpredictable
d) None of the mentioned
View Answer
Explanation: In digital multiplexer selector line is of digital value.
8. Which of the following is not a multiplexer?
a) 8-to-1 line
b) 16-to-1 line
c) 4-to-1 line
d) 1-to-4 line
View Answer
Explanation: Multiplexer is a multiple input single output system.
9. Demultiplexer act as an encoder.
a) True
b) False
View Answer
Explanation: Demultiplexer is basically a decoder in function.
10. Multiplexer can be used as PLD.
a) True
b) False
View Answer
Explanation: Multiplexer can be used as PLD, by specifying the logic arrangement in the input signals, a custom logic circuit can be created.
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