Time-frequency analysis of non-sinusoidal periodic signals

1. How do you find the frequency of a non periodic signal?
2. How can the effective value of a non-sinusoidal wave be determined?
3. What is non-sinusoidal current?

How do you find the frequency of a non periodic signal?

A truly non-periodic signal doesn't have a repeating pattern and as a result the signal only occurs once over any stretch of time. So its frequency is 1 occurence/infinite time or practically 0 Hz.

How can the effective value of a non-sinusoidal wave be determined?

RMS Voltage Equivalent

Graphical Method – which can be used to find the RMS value of any non-sinusoidal time-varying waveform by drawing a number of mid-ordinates onto the waveform. Analytical Method – is a mathematical procedure for finding the effective or RMS value of any periodic voltage or current using calculus.

What is non-sinusoidal current?

A non-sinusoidal waveform is one that is not a sine wave and is also not sinusoidal (sine-like). This may sound like a minor distinction but actually there are some substantive implications. A simple sine wave display. A sine wave is the graph of the sine function, usually with time as the independent variable.