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.

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