An engineer is required to analyse a sinusoidal waveform for the voltage and current using oscilloscope. The voltage waveform produced Root Mean Square (RMS) value at 75 V with positive-going zero crossing at 30°. While the RMS value of current is 66.71 A with negative-going zero crossing at 0.349 rad. Assume the frequency of both waveforms is 50 Hz. (i) Sketch the voltage and current waveform in the same axis by showing the important point. (ii) Determine instantaneous voltage when t = 8ms - (iii) Determine phase relationship between voltage and current waveform.
An engineer is required to analyse a sinusoidal waveform for the voltage and current using oscilloscope. The voltage waveform produced Root Mean Square (RMS) value at 75 V with positive-going zero crossing at 30°. While the RMS value of current is 66.71 A with negative-going zero crossing at 0.349 rad. Assume the frequency of both waveforms is 50 Hz. (i) Sketch the voltage and current waveform in the same axis by showing the important point. (ii) Determine instantaneous voltage when t = 8ms - (iii) Determine phase relationship between voltage and current waveform.
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Transcribed Image Text:(b)
An engineer is required to analyse a sinusoidal waveform for the voltage and current
using oscilloscope. The voltage waveform produced Root Mean Square (RMS) value
at 75 V with positive-going zero crossing at 30°. While the RMS value of current is
66.71 A with negative-going zero crossing at 0.349 rad. Assume the frequeney of both
waveforms is 50 Hz.
(i)
Sketch the voltage and current waveform in the same axis by showing the
important point.
(ii)
Determine instantaneous voltage when t = 8ms .
(iii)
Determine phase relationship between voltage and current waveform.
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