When excitation given to a 3-phase alternator is equal to terminal voltage then ____________(a) the absorbed reactive power is zero(b) the absorbed real power is zero(c) the delivered real power is zero(d) any of the mentionedI have been asked this question in an interview for job.My enquiry is from Power Flow Through an Inductive Impedance in chapter Efficiency and Regulation of Electrical Machines

When excitation given to a 3-phase alternator is equal to terminal vol

1.	When excitation given to a 3-phase alternator is equal to terminal voltage then ____________(a) the absorbed reactive power is zero(b) the absorbed real power is zero(c) the delivered real power is zero(d) any of the mentionedI have been asked this question in an interview for job.My enquiry is from Power Flow Through an Inductive Impedance in chapter Efficiency and Regulation of Electrical Machines
Answer» CORRECT choice is (a) the absorbed reactive POWER is zero The explanation is: When EXCITATION is EQUAL to the terminal voltage there will not be any net flow of energy across the system.

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