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Calculate the phase angle of the sinusoidal waveform z(t)=.99sin(4578πt+78π÷78).(a) π÷3(b) 2π(c) π÷7(d) πI have been asked this question during a job interview.This is a very interesting question from Methods of Starting Electric Motors topic in section Starting of Electric Drives

Answer»

The correct option is (d) π

To explain: Sinusoidal waveform is generally expressed in the FORM of V=Vmsin(ωt+α) where VM represents peak VALUE, Ω represents angular frequency, α represents a PHASE difference.



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