02 May QuestionAlternating Current And Three-Phase Systems
Question
Alternating Current And Three-Phase Systems
Respond to each question with a paragraph (or two) that answers the question. If a calculation is required, you must submit equations that support your answer, not just a number.
Explain the reason root mean square is used when measuring the voltage of an AC source.
Calculate the voltage value of a sine wave at 135° whose VRMS= 1000 VAC. Show all work.
Define power factor and write the equation to calculate it.
Explain why three-phase systems are preferred over single-phase systems for power generation.
Explain the difference between wye and delta systems. Give an example of when each would be used.
Calculate the reactive power in a balanced three-phase circuit when voltage of the load is 480 VAC, current of the load is 10 Amps, and the power factor is .9.
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