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?

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

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

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

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