29-11-2013, 01:06 PM
Anna University
Department of Electronics and Communication Engineering
Third Semester
EC2204 Signals and Systems
Nov / Dec 2013 Important Questions
(Regulation 2008)
Unit 1
1. Sketch out the signals
2. Check whether the signal is energy or power signal.
3. Check whether the signal is periodic or non-periodic.
4. Basic properties of system (static/dynamic, causal/non-causal, ….)
5. Properties of LTI system (causality,stability).
Unit 2
1. Find the F.S & F.T of periodic signals (triangle, rectangle).
2. Half wave & Full wave rectifier signals.
3. Properties of F.T with problems.
4. Convolution problems.
5. Properties of L.T.
6. Find inverse L.T of X(s).
Unit 3
1. Find a.)transfer function b.)impulse response c.)response of the system from the given differential equation.
2. Find the response of the system whose input is x(t) & the impulse response is h(t).
3. Convolution Integral problems (triangle & u(t)).
4. Matrix representation problems.
Unit 4
1. State & Derive Sampling theorem.
2. Explain in detail about aliasing effect.
3. Find highest sampling frequency & NyQuist rate for x(t).
4. Properties of DTFT.
5. Properties of Z.T.
Unit 5
1. Problems on Convolution sum.
2. Find a.)transfer function b.)impulse response c.)response of the system from given Difference equation.
3. Find the response of the system whose input is x(n) & the impulse response is h(n).
4. Matrix Representation problems.