EC202 SIGNALS & SYSTEMS Module1 QUESTION BANK

1. NEHRU COLLEGE OF ENGINEERING AND RESEARCH CENTRE
QUESTION BANK
EC 202: SIGNALS & SYSTEMS
MODULE 1
1. Check whether the signal x(t)= 10sin50Пt + cos 100Пt is periodic or not. Find the
fundamental period if periodic.
2. Plot the signal x(t)=2u(t+1)+2u(t)-3u(t-3)-2u(t-5)
3. Check whether the following signals are energy or power signals
(a) x(t)= e-3|t|
(b) x(n)= (1/4)n u(n)
(c)x(t)=e3tu(t-2)
(d) x(n)= (1/2)n u(n-2)
(e) x(t)= e-2tu( -t)
4. Determine whether the system, y(n)=x(n)+ 5/x(n-5) is Time invariant,
Linear,Static,Stable and Causal.
5. Show that the product of 2 odd signals is an even signal
6. What are signals? Explain the classification of signals.
7. Explain about the different properties of system.
8. Define static and dynamic system.
9. Define odd and even signal.
10. Find the odd and even components of the signal x(n)= {1,2,-1}