Electric Circuits
An electrical motor has rating of 10 MVA at 0.8 lag, represented as series RL circuit at a 50 MVA base. Find the impedance value?

 (3 + j4) pu
 (4 + j3) pu
 (2 + j4) pu
 (4 + j2 ) pu

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Electric Circuits
A pole of driving point impedance is

 zero current for a finite value of driving voltage.
 zero voltage for a finite value of driving voltage.
 zero current for a finite value of driving current.
 zero voltage for a finite value of driving current.

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