SINUSOIDAL ALTERNATING WAVEFORMS

Alternating waveforms
-The term alternating indicates only that the wave form prescibed levels in a set time sequence.
1200px-Waveforms.svg

Polarites and Direction Polarities+and+Direction

Characteristics Sinusoidal ac Voltage

Instantaneous value

Waveform

Peak amplitude

Peak value

Peak-to-peak value

Periodic waveform

Period(T)

Cycle

Frequency

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Sinusoidal Waveform


-The velocity with which the radius vector rotates about the center,called the angular velocity,can be determined from the following equation:
images :

-The quantity π is the ratio of the circumference of a circle to its diameter
-For 180° and 360°,the two units of measurement are related as follows:
conversions again!

General Format for Sinusoidal Voltage or Current
GENERAL+FORMAT+FOR+THE+SINUSOIDAL+VOLTAGE+OR+CURRENT

Phase Relationship
-The term lead and lag are used to indicate the relationship between two sinusoidal waveforms of the same frequency plotted on the same set of axes
13.6+Phase+Relationship+Example+13.2+–+solution+(cont’d)

Effective(rms) Value
Effective+(rms)+Values

Average Value
rms14a