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Department of Electronics & Communication Engineering

This document contains a class test questions from the Unit 1 - Signals & Systems course of Digital Signal Processing for the IV Year CSE branch students at NPR College of Engineering and Technology in Dindigul, Tamil Nadu, India. It has two parts - Part A contains 15 multiple choice questions testing concepts like definitions of systems, signals, Z-transforms, sampling theorem, etc. Part B has 6 numerical questions involving classification of systems, energy/power calculation of signals, Z-transforms, circular/linear convolution, and properties of Z-transforms.

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33 views2 pages

Department of Electronics & Communication Engineering

This document contains a class test questions from the Unit 1 - Signals & Systems course of Digital Signal Processing for the IV Year CSE branch students at NPR College of Engineering and Technology in Dindigul, Tamil Nadu, India. It has two parts - Part A contains 15 multiple choice questions testing concepts like definitions of systems, signals, Z-transforms, sampling theorem, etc. Part B has 6 numerical questions involving classification of systems, energy/power calculation of signals, Z-transforms, circular/linear convolution, and properties of Z-transforms.

Uploaded by

kjairam80
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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NPR Nagar, Natham, Dindigul - 624401, Tamil Nadu, India.

Phone No: 04544- 246 500, 246501 246502


Website : www.nprcolleges.org E-mail: nprgi@nprcolleges.org
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING
YEAR/BRANCH: IV/CSE
CS2403 DIGITAL SIGNAL PROCESSING
UNIT I - SIGNALS & SYSTEMS
CLASS TEST QUESTIONS
1.
2.
3.
4.
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15.

PART A
Define system.
List out the applications of DSP.
Define Linear system.
What are the steps involved in digital signal processing?
What is an Energy signal?
Write the classifications of DT Signals.
Is the system y(n) = x (n-1) + 2nx(n-2) time-invariant?
Define Even and Odd Signals.
What is ROC in Z-Transform?
Find Z transform of x(n)={2,-8,3,7,2}.
What are the different methods of evaluating Inverse Z-transform?
Why the result of circular and linear convolution is not same?
Define sampling theorem.
Find the Z transform of the sequence x[n] = 3n u(n) and its ROC.
Determine the inverse Z transform of X(Z)=1/z-a.
PART B

1.
2.

Explain the Classification of Discrete time systems with examples.


Check whether the given system is linear or non-linear, causal or non-casual, time invariant or
time variant , static or dynamic.
y(n)=cos[x(n)]

3.

Determine the value of energy and power for each of the signals.
a. x1(n)= e

4.

j(

n
+ )
2 8

b. x2(n)=( )nu(n)
Determine Z-transform of the signal

1 n
1 n
U ( n) +
U ( n)
2
3

()

()

ii. [ cos o n U (n)

5.

Find the circular & linear convolution of the following sequence

6.

State and prove the properties of Z transform.

x1 [n] = {1,-1,2,3}
x2[n] = {2,1,2,3}

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