(SEM IV) THEORY EXAMINATION 2022-23 SIGNAL SYSTEM
Example Based on Your SIGNAL SYSTEM Paper (Section A)
If the exam asks:
What is the significance of ROC?
Then “WHAT DESCRIPTION” means: write a short paragraph explaining that the Region of Convergence (ROC) defines where the z-transform or Laplace transform exists, and it helps determine system stability and causality.
If the exam asks:
What is meant by anti-aliasing filter?
Then “WHAT DESCRIPTION” means: write a paragraph explaining that it is a low-pass filter used before sampling to remove high-frequency components and prevent overlap (aliasing) in the sampled signal.
Also Applies in Sections B & C
For example:
State and prove sampling theorem → You must write a descriptive explanation of the theorem, its meaning, and show the proof in a paragraph or two.
Or in Section C:
Check whether the digital systems are BIBO stable → You must describe the stability method, explain the condition, then apply it.
Extra Sample Questions
Here are more examples written according to your pattern:
1. What is cross-correlation? Explain in short.
A descriptive paragraph explaining how cross-correlation measures similarity between two signals as one is shifted over the other.
2. What is time-shifting property of Laplace transform?
A short paragraph explaining how shifting in time affects the Laplace domain by multiplying the transform by an exponential term.
3. Explain even and odd components of a signal.
A paragraph describing how any signal can be decomposed into symmetric (even) and antisymmetric (odd) parts.
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