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What is the period of a dc signal?
Time period is the time taken for the signal to complete one cycle. It is measured in seconds (s) but time periods tend to be short so milliseconds (ms) and microseconds (µs) are often used. 1ms = 0.001s and 1µs = 0.000001s. Frequency is the number of cycles per second.
How are frequency and period defined for a periodic signal?
The frequency of a signal tells us how many times the signal repeats itself during one second. Units of frequency are in cycles per second, or Hertz (abbreviated as Hz). Therefore, a signal with a frequency of 100Hz goes through 100 cycles (periods) in one second—the period of the signal is 0.01 seconds.
Which of the following is used to analyze a periodic signal in frequency domain?
A spectrum analyzer is a tool commonly used to visualize electronic signals in the frequency domain.
What is the fundamental period?
Explanation: The first time interval of a periodic signal after which it repeats itself is called a fundamental period. It should be noted that the fundamental period is the first positive value of frequency for which the signal repeats itself. It is constant at any time, it is aperiodic.
Can a flat zero be a periodic signal?
Yes you can treat an infinite line as a repeating segment of some arbitrary wavelength to obtain a periodic signal. However, the function within this period is a flat zero. So if we look into the frequency domain of this periodic signal, we will see that it has no amplitude at its fundamental, nor any harmonics.
How is frequency for DC zero Hz determined?
Sampling any input waveform at a particular rate N will yield a result which the amplitude of any frequency component f will be the sum of the amplitudes of all frequency components kN+f and kN-f for all integer k. Thus, when sampling at rate N, a DC component will be indistinguishable from AC components at frequencies (2k+1)N/2.
Which is the only frequency which is constant in DC?
Since the only “frequency” which is an integer multiple of both 1.0Hz and πHz is 0, there is nothing other than DC which would yield a constant voltage on both samples. Frequency is how often an event repeats itself over a set amount of time.
When is the frequency of a continuous periodic signal large?
When the frequency of a continuous periodic signal is large, you can expect to see a very spiky graph, as f → ∞ the graph seems to sweep the entire area. As you can see it does not seem like high frequencies have anything to do with DC which is the complete opposite.