# Instrumentation Transducers Questions and Answers – Time Division Multiplexing

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This set of Instrumentation Transducers Multiple Choice Questions & Answers (MCQs) focuses on “Time Division Multiplexing”.

1. Time division multiplexing includes ___________________
d) None of the mentioned

Explanation: Time division multiplexing includes both radio or wired link according to application.

2. Which of the following data is correct for TDM?
a) Analog data is transmitted
b) Digital data is transmitted
c) Both analog and digital data transmitted
d) None of the mentioned

Explanation: Using TDM analog data is transmitted.

3. PAM stands for _______________
a) Pulse Amplitude Modulation
b) Power Amplitude Modulation

Explanation: Term PAM stands for process Pulse Amplitude Modulation.
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4. Commutators are mechanical switches in operation.
a) True
b) False

Explanation: Commutators perform an operation of on and off and they function as mechanical switches.

5. Which of the following represents a number of samples per second?
a) Product of frame rate and number of samples per frame
b) Frame rate
c) Ratio of samples per frame and frame rate
d) None of the mentioned

Explanation: Number of samples taken per second will be equal to the product of frame rate and number of samples per frame.

6. What will be the general number of samples per frame?
a) 18
b) 30
c) 18 or 30
d) None of the mentioned

Explanation: Generally a number of samples per frame will be 18 or 30.

7. Maximum rate of commutation will be _________________
a) 800 sample per second
b) 900 sample per second
c) 1200 sample per second
d) 1000 sample per minute

Explanation: Maximum rate of commutation in TDM will be 900 samples/sec.

8. Amplitude of each pulse of PAM train conveys the amplitude of particular channel sampled.
a) True
b) False

Explanation: Amplitude data of particular sampled channel can be obtained from the amplitude of PAM train.

9. PTM stand for _________________
a) Pulse train modulation
b) Pulse time modulation
c) Power train modulation
d) None of the mentioned

Explanation: PTM is the short form of pulse train modulation.

10. Which of the following can be generated from the PDM signal?
a) PPM
b) PTM
c) PAM
d) PFM

Explanation: If PDM signals are available, PPM signal can be generated from PDM signals.

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