Calculate the angular frequency of the waveform y(t)=69sin(40πt+4π).(a) 40π Hz(b) 60π Hz(c) 70π Hz(d) 20π HzI got this question in final exam.I would like to ask this question from Methods to Reduce the Energy Loss During Starting in chapter Starting of Electric Drives

Calculate the angular frequency of the waveform y(t)=69sin(40πt+4π).

1.	Calculate the angular frequency of the waveform y(t)=69sin(40πt+4π).(a) 40π Hz(b) 60π Hz(c) 70π Hz(d) 20π HzI got this question in final exam.I would like to ask this question from Methods to Reduce the Energy Loss During Starting in chapter Starting of Electric Drives
Answer» The correct option is (a) 40π Hz Easy explanation: The fundamental time period of the SINE wave is 2π. The 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. Ω can be directly calculated by COMPARING the equations. Ω = 40π Hz.

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Calculate the angular frequency of the waveform y(t)=69sin(40πt+4π).(a) 40π Hz(b) 60π Hz(c) 70π Hz(d) 20π HzI got this question in final exam.I would like to ask this question from Methods to Reduce the Energy Loss During Starting in chapter Starting of Electric Drives

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