Md. samim Sk
August 20, 2017
0
Introduction to AC of Circuit Analysis
- AC stands for alternating current.
- The AC power source produces potential that varies with time.
- Creation of AC waves
- The electromechanical alternator produces voltage which switches polarity after fixed intervals of time.
- When it is represented on a graph, it looks like a sine wave
- Concept of Frequency and Period
- The horizontal axis of the graph representing AC waves is marked with time and the dimension marked with one cycle of time is measured as period.
- Another measurement that can be taken is the back and forth oscillation of the wave called frequency.
- Period and Frequency are mathematical reciprocals of each other.
- Measuring AC voltage and current
- AC voltage alters in polarity and current alters in phase.
- Hence, the peak of the amplitude of the wave is considered and the peak to peak value is taken.
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