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Ect204 Final

This document outlines the first internal evaluation for the Signals and Systems course (ECT204) for B.Tech students in the Department of Electronics and Communication Engineering at John Cox Memorial C.S.I Institute of Technology. It includes general instructions, a breakdown of Part A and Part B questions, and specifies the total marks and time allotted for the evaluation. The questions cover various topics such as standard signals, system properties, Fourier Series, and Laplace Transform.

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55 views1 page

Ect204 Final

This document outlines the first internal evaluation for the Signals and Systems course (ECT204) for B.Tech students in the Department of Electronics and Communication Engineering at John Cox Memorial C.S.I Institute of Technology. It includes general instructions, a breakdown of Part A and Part B questions, and specifies the total marks and time allotted for the evaluation. The questions cover various topics such as standard signals, system properties, Fourier Series, and Laplace Transform.

Uploaded by

lijirf1216
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Reg No.

: Name :

John Cox Memorial C.S.I Institute Of Technology


DEPARTMENT OF ELECTRONICS AND COMMUNICATION
ENGINEERING
IVth Semester - B.Tech
FIRST INTERNAL EVALUATION, FEBRUARY 2025
Course : ECT204 - SIGNALS AND SYSTEMS
Total Mark: 50 Total Time: 1 Hrs : 30 Mins
General Instructions
1. Answer ALL questions from Part A and One full question from each module of Part B
CO BL MARK

PART A

1. Write short note about the standard signals a) Unit Step Signal. b) Delta orUnit
CO1 3 (3)
Impulse function .
2. Check whether the following systems are time-invariant or time -variant y(t) = x(t)
CO1 3 (3)
Cos200
3. Sketch the signal 2u(t-1) CO1 6 (3)

4. Explain GIbb's phenomenon CO2 1 (3)

5. State and prove Parsevel's theorem in Fourier Series. CO2 1 (3)

6. Prove Differentiation in Frequency of Fourier Transform CO2 1 (3)

PART B
Answer Any Two Question(s)
MODULE 1
7. Check whether the following systems are a) static or dynamic, b) linear or non-linear,
c) causal or non-causal, d) time invariant or time-variant. i) y(t) = y(T) + 3t
CO1 3 (16)
y(t) +y(t) = x(t) . ii) y(n) = cos[x(n)]

OR
8. a) Check whether the signal is energy signal, power signal, neither energy nor power
CO1 2 (8)
signal. x(t) = cos t
b) Check whether the signal is cuasal or non-causal i) u(t) ii) iii) x(t) = sinct CO1 3 (8)
MODULE 2
9. a) Prove the time scaling property of FT and hence find FT of x(t) = CO2 3 (8)

b) Find the FS coefficients fo the continous time periodic signal


x(t) = 1.5 for 0< t<1 CO2 3 (8)
x(t) = --1.5 fot 1<t<2
OR

10. a) What are the properties of ROC? CO2 1 (8)

b) A signal has Laplace Transform X(s) = . Find LT Y(s) of the signal y(t) =
CO2 3 (8)
t.x(t).

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