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At the end of the section, you should be able to:
At the end of the section, you should be able to:
Express sinusoidal waveforms as functions of time.
Function of time
Function of time
Phase angle
Phase angle
The points on a sinusoidal waveform can be obtained by projection from a rotating vector to the co-ordinate (or point) of the waveform that corresponds to the angle of rotation or phase angle θ as shown below.
The points on a sinusoidal waveform can be obtained by projection from a rotating vector to the co-ordinate (or point) of the waveform that corresponds to the angle of rotation or phase angle θ as shown below.
The video below shows how sinusoidal waveforms are formed from a rotating vector.
The video below shows how sinusoidal waveforms are formed from a rotating vector.
The initial phase angle represents a shift along the time axis.
The initial phase angle represents a shift along the time axis.
An example ...
An example ...
Phase difference & lead-lag relationship
Phase difference & lead-lag relationship
Note: You may stop at 2:50 min.
Check your understanding 2.1
Check your understanding 2.1
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