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DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING
YEAR/BRANCH: IV/CSE CS2403 DIGITAL SIGNAL PROCESSING
UNIT I - SIGNALS & SYSTEMS
CLASS TEST QUESTIONS
PART A1. Define system.2. List out the applications of DSP.3.
Define Linear system.4. What are the steps involved in digital
signal processing?5. What is an Energy signal?6. Write the
classifications of DT Signals.7. Is the system y(n) = x (n-1) +
2nx(n-2) time-invariant?8. Define Even and Odd Signals.9. What is
ROC in Z-Transform?10. Find Z transform of x(n)={2,-8,3,7,2}.11.
What are the different methods of evaluating Inverse
Z-transform?12. Why the result of circular and linear convolution
is not same?13. Define sampling theorem.14. Find the Z transform of
the sequence x[n] = 3n u(n) and its ROC.15. Determine the inverse Z
transform of X(Z)=1/z-a.
PART B
1. Explain the Classification of Discrete time systems with
examples.2. 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)=b. x2(n)=( )nu(n)4. Determine
Z-transform of the signal
ii. [ 5. Find the circular & linear convolution of the
following sequence x1 [n] = {1,-1,2,3} x2[n] = {2,1,2,3}6. State
and prove the properties of Z transform.
