Electric Circuits
A balanced delta connected load has an impedance of 9∠30o Ω per phase. What is the impedance per phase of its equivalent star?

 3∠30o Ω.
 30∠30o Ω.
 27∠30o Ω
None of these

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Electric Circuits
What is referred as the average value in AC opearation?

 Average of all values of the (+)ve and (-)ve half.
  Average of all values of an alternating quantity over a complete cycle.
 Average of all values of the phase sequences.
 Average of all values of an alternating quantity.

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