AC1 Fundamentals Unit 2 – AC Measurements
The second type of measurement is the time-related measurement of frequency. Frequency is the
number of cycles of a given waveform that occur in one second.
The last measurement, phase angle, is a time-related measurement used to compare two sine
waves of identical frequency.
The sine wave bears a direct relationship to circular rotation. Like a circle, it is divided into 360
degrees. Each cycle of the sine wave equals one complete circular rotation.
As in a circle, one complete cycle of a sine wave equals 360 degrees.