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Calculate the frequency of the waveform i(t) = sin(πt+π÷4)+sin(πt+π÷74).(a) .5 Hz(b) .8 Hz(c) .1 Hz(d) .9 HzI got this question by my school teacher while I was bunking the class.Origin of the question is Solar Panels in section Solar and Battery Powered Drives of Electric Drives

Answer»

Right CHOICE is (a) .5 Hz

The best explanation: The FUNDAMENTAL time period of the sine wave is 2π. The time period of i(t) is L.C.M {2,2}=2 sec. The frequency of the waveform is 1/2 = .5 Hz. The time period is INDEPENDENT of phase SHIFTING and time-shifting.


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