Welcome to the Signals and Spectra MCQs Page

Dive deep into the fascinating world of Signals and Spectra with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Signals and Spectra, a crucial aspect of Digital Communication. In this section, you will encounter a diverse range of MCQs that cover various aspects of Signals and Spectra, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Digital Communication.

Check out the MCQs below to embark on an enriching journey through Signals and Spectra. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Digital Communication.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Signals and Spectra. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Signals and Spectra MCQs | Page 4 of 15

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Q31.

Autocorrelation is a function which matches

Two same signals

Two different signal

One signal with its delayed version

None of the mentioned

Discuss

Answer: (c).One signal with its delayed version

Q32.

Autocorrelation is a function of

Time

Frequency

Time difference

Frequency difference

Discuss

Answer: (c).Time difference

Q33.

Autocorrelation is maximum at _______

Unity

Origin

Infinite point

None of the mentioned

Discuss

Answer: (b).Origin

Q34.

Autocorrelation function of periodic signal is equal to _______

Energy of the signal

Power of the signal

Its area in frequency domain

None of the mentioned

Discuss

Answer: (b).Power of the signal

Q35.

Autocorrelation is a _______ function.

Real and even

Real and odd

Complex and even

Complex and odd

Discuss

Answer: (a).Real and even

Q36.

Autocorrelation function of white noise will have?

Strong peak

Infinite peak

Weak peak

None of the mentioned

Discuss

Answer: (a).Strong peak

Q37.

Random variables give relationship between _____

Two random events

Probability of occurence of two random events

Random event and a real number

Random event and its probability of occurrence

Discuss

Answer: (c).Random event and a real number

Q38.

The distribution function of random variable is

P(X less than or equal to x)

P(X greater than or equal to x)

P(X less than x)

P(X greater than x)

Discuss

Answer: (a).P(X less than or equal to x)

Q39.

The distribution function of -(infinity) and (infinity) is _____

0 and 1

1 and 0

Both 0

Both 1

Discuss

Answer: (a).0 and 1

Q40.

The value of the probability density function of random variable is

Positive function

Negative function

Zero

One

Discuss

Answer: (a).Positive function

Page 4 of 15

Welcome to the Signals and Spectra MCQs Page

Signals and Spectra MCQs | Page 4 of 15

Explore more Topics under Digital Communication

Digital Communication Basics

Signal Formatting and Baseband Modulation

Baseband Demodulation and Detection

Channel Coding

Modulation and Coding Trade off

Multiplexing and Multiple Access

Spread Spectrum Techniques

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