This is the electronics and communication engineering questions and answers section on " Signals and Systems " with an explanation for various interview, competitive examination and entrance test. Solved examples with detailed answer description, explanation are given and it would be easy to understand. This Signals and Systems ECE Quiz is designed for all the students and enthusiastic learners. Aspirants who are willing to learn Signals and Systems ECE Questions and Answers in simple and easy steps must refer to this article. This web page will give you a deep understanding of Signals and Systems ECE MCQ Questions concepts. After completing this Signals and Systems Questions Online Test, individuals will be at an intermediate level from where you can take yourself to a higher level. To know more data regarding Signals and Systems ECE Multiple Choice Questions check the below sections of this page.

## Signals and Systems ECE Questions - Signals and Systems ECE Quiz Details

Before proceeding with this Signals and Systems ECE Quiz, wannabes must have a basic understanding of differential and integral calculus, limits and knowledge of mathematics. If candidates practice all the provided Signals and Systems ECE questions and answer it will be beneficial to ace any type of competitive exams or core based interviews or government exams like APGENCO. So practice well and get a dream job.

### Signals and Systems ECE Quiz Topics Covered

Signals Classification, Signals Basic Operations, Signals Sampling Techniques, Systems Classification, Signals Analysis, Fourier Series, Fourier Series Properties, Fourier Series Types, Fourier Transforms, Fourier Transforms Properties, Region of Convergence, Distortion Less Transmission, Hilbert Transform, Convolution and Correlation, Signals Sampling Theorem, Laplace Transforms, Laplace Transforms Properties, Z-Transforms (ZT), Z-Transforms Properties are the main topics in the Signals and Systems ECE Quiz. If postulate wants to score more marks, then need to practice the questions and answers based on the Signals and Systems.
### Signals and Systems ECE MCQ Quiz Answers With Solutions

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Online Test Name |
Signals and Systems |

Exam Type |
Multiple Choice Questions |

Category |
Electronics and Communication Engineering Quiz |

Number of Questions |
30 Questions |

Before proceeding with this Signals and Systems ECE Quiz, wannabes must have a basic understanding of differential and integral calculus, limits and knowledge of mathematics. If candidates practice all the provided Signals and Systems ECE questions and answer it will be beneficial to ace any type of competitive exams or core based interviews or government exams like APGENCO. So practice well and get a dream job.

21. For a band pass signal extends from 1 KHz to 2 KHz. Then the minimum sampling frequency that needed to retain all information of the sampled signal is
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Answer: Option B

Explanation:

Minimum sampling frequency = 2(Bandwidth)= 2(2-1)=2KHz

22. A continuous-time periodic signal x(t), having a period T, is convolved with itself. Then the resulting signal is
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Answer: Option C

Explanation:

Convolution of a periodic signal of a period T when convoluted with itself will give the same period T

23. Determine the Fourier transform of unit step x(t) = u(t)
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24. The Fourier transform of u(t) is B(jÏ‰) & the laplace transform of u(t ) is A(s), then which of the following equation is satisfied
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Answer: Option B

Explanation:

Laplace Transform of
u(t)

U(t) Ã A(s)
= 1/s

Fourier Transform of
u(t)

U(t) Ã
B(jÏ‰) =( 1/jÏ‰) + Ï€ Î´(Ï‰)

Therefore A(s) = 1/s
but B(jÏ‰) â‰ 1/jÏ‰ is satisfied.

25. The Inverse Fourier Transform of u(Ï‰) is
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Answer: Option A

Explanation:

x(t) = u(t) ÃŸÃ X(jÏ‰) =( Ï€
Î´(Ï‰)/ J Ï‰ ) + 1

Duality Property: X(jt) ÃŸÃ 2Ï€ x(-Ï‰)

U(Ï‰) ÃŸÃ
(½) Î´(t) + 1/Ï€t