Figure Q1b shows the voltage and current waveforms from an AC circuit. A student states that these waveforms show the output from a circuit containing only resistors in series. State clearly the error the student has made and justify your answer, describing an example of a circuit where these waveforms might arise. (i) (i) The voltage and current waveforms, v(t) and i(t), have a frequency of 60 Hz and are displaced from each other by 40 degrees. Write down the correct formulas for the voltage and current in the form; vit) = V. (sin w t + 0) and it) = 1, sin w t+o .) (iii) List the information required to draw a phasor diagram for the voltage and current waveforms and produce the phasor diagram.

Figure Q1b shows the voltage and current waveforms from an AC circuit. A student states that these waveforms show the output from a circuit containing only resistors in series. State clearly the error the student has made and justify your answer, describing an example of a circuit where these waveforms might arise. (i) (i) The voltage and current waveforms, v(t) and i(t), have a frequency of 60 Hz and are displaced from each other by 40 degrees. Write down the correct formulas for the voltage and current in the form; vit) = V. (sin w t + 0) and it) = 1, sin w t+o .) (iii) List the information required to draw a phasor diagram for the voltage and current waveforms and produce the phasor diagram.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter7: Alternating Current, Power Distribution, And Voltage Systems

Section: Chapter Questions

Problem 7RQ

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