Noise in Pulse Modulated System MCQ’s

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This set of Analog Communication Multiple Choice Questions & Answers (MCQs) focuses on “Noise in Pulse Modulated System”.

1. Scattering causes _________
a) refraction
b) loss
c) dispersion
d) reflection

2. The loss in single-mode fiber optic cable due to the glass is about ________
a) 40 dB per km
b) 0.4 dB per km
c) zero
d) 100 dB per km

3. Fiber-optic cable can be used to connect a transmitter to an antenna.
a) True
b) False

4. The loss in single-mode fiber optic cable due to the splice is about ________
a) 0.2 dB per km
b) 0.02 dB per km
c) 0.0002 dB per km
d) 2 dB per km

5. What is the full form of FITL ________
a) Fiber Input Timing Loss
b) Fibre Impedance To The Loop
c) Fiber Input Timing Loop
d) Fiber In The Loop

6. What is represented by “Figure Of Merit”?
a) how much noise is in the channel
b) how much noise is in the communication system
c) how much noise an amplifier adds to the signal
d) signal to noise ratio in dB

7. The loss in single-mode fiber optic cable due to the connector is about ________
a) 0.2 dB per km
b) 0.02 dB per km
c) 0.0002 dB per km
d) 2 dB per km

8. Adding bits to synchronize one digital signal to another is called _________
a) WDM
b) TDM
c) Bit stuffing
d) Bit synchronization

9. In a balanced mixer, the output _________
a) contains equal amount of all input frequencies
b) does not contain the input frequencies
c) contains the input frequencies
d) is a non-linear mixture of input signals

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