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Noise - Digital Communication MCQs

Noise MCQs : Here you will find MCQ Questions related to "Noise" in Digital Communication. These Noise MCQ Questions Will help you to improve your Digital Communication knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations.




Question 1

_________ can be improved by increasing the sampling rate.

A. SNR
B. SQNR
C. SQR
D. QNR

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Question 2

Which offer better SQNR?

A. PCM
B. delta modulation
C. Both A and B
D. None of the above

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Question 3

Two functions are called as orthogonal if the integral value of integrating the product is?

A. -1
B. 1
C. 0
D. Infinite

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Question 4

Thermal noise occurs due to equilibrium fluctuations. This noise is also called as?

A. Thermal noise
B. Johnson noise
C. Both A and B
D. None of the above

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Question 5

___________ has same power spectral density where as it decreases in case of brown noise.

A. Pink noise
B. Black noise
C. Brown noise
D. White noise

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Question 6

Flicker noise is called as?

A. Brown noise
B. Black noise
C. Pink noise
D. White noise

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Question 7

Brown noise is sometimes useful for dithering.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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Question 8

Noise has ________ signal.

A. infinite power
B. infinite energy
C. infinite time
D. infinite sample

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Question 9

Thermal noise is considered as power signal as it has infinite energy.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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Question 10

Which of the following is false?

A. Thermal noise is modeled as a wide sense stationary stochastic process.
B. Capacity of a channel can be increased by reducing the in band noise power
C. The maximum likelihood function is always positive.
D. Thermal noise is considered as power signal as it has zero energy.

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