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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.

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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 2 of 15

Q11.
Which measurement considers phase as an important parameter?
Discuss
Answer: (a).Coherent
Q12.
The size of the alphabet M in symbol is calculated as?
Discuss
Answer: (b).2^k
Q13.
What is the period of a signal x(t)?
Discuss
Answer: (a).T
Discuss
Answer: (a).x(t) = 4 cos(5πt)
Q15.
Check whether the signal is periodic or not?

x(t) = cos(4t) + 2sin(8t)
Discuss
Answer: (a).Periodic with period π/2
Q16.
Find the periodicity of the following signal.

x(t)=cos((2π/7)t)sin((3π/5)t)
Discuss
Answer: (c).35
Q17.
Find the fundamental period of 1+sin^2 (3π/5)n.
Discuss
Answer: (b).5
Discuss
Answer: (a).Finite energy and zero power
Discuss
Answer: (c).Finite power and infinite energy
Q20.
Determine the periodicity and also find whether it is a power or energy signal?

e^(-at) u(t)
Discuss
Answer: (b).Non periodic and energy signal
Page 2 of 15

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