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Periodic & Non Periodic Signals Video Lecture | Signals and Systems - Electrical Engineering (EE)

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FAQs on Periodic & Non Periodic Signals Video Lecture - Signals and Systems - Electrical Engineering (EE)

1. What is a periodic signal?
Ans. A periodic signal is a signal that repeats itself after a certain interval of time. It follows a specific pattern and can be represented by a mathematical function with a fixed period.
2. Can you give an example of a periodic signal?
Ans. Yes, an example of a periodic signal is a sine wave. It repeats itself over regular intervals of time and can be represented by the equation y = A sin(2πft + φ), where A is the amplitude, f is the frequency, t is the time, and φ is the phase shift.
3. What is a non-periodic signal?
Ans. A non-periodic signal is a signal that does not repeat itself after any fixed interval of time. It does not follow a specific pattern and cannot be represented by a mathematical function with a fixed period.
4. Can you give an example of a non-periodic signal?
Ans. Yes, an example of a non-periodic signal is a random noise signal. It does not exhibit any regular pattern and its values are unpredictable. Another example is a transient signal, which occurs for a short duration and then disappears.
5. How can we distinguish between periodic and non-periodic signals?
Ans. To distinguish between periodic and non-periodic signals, we can analyze their time domain representations. If a signal repeats itself after a certain interval, it is periodic. On the other hand, if a signal does not exhibit any repetition or pattern, it is non-periodic. Additionally, mathematical analysis techniques such as Fourier transform can also be used to determine the periodicity of a signal.
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