This raises two questions – (i) Why did the Electrical Power Industry prefer sinu-
soidal waveform to any other waveform? (ii) Why does Electronics and Communications
Engineering concern itself with sinusoidal analysis though a single-frequency sinusoid is
hardly ever employed in a communication system?
These two questions are answered first in this chapter. Subsequently, the concepts of
instantaneous power, average power, effective value of waveforms etc., are developed for
sinusoidal waveforms as well as for other ...
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