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Q#1 Synchronous Machines GATE EE 1993 MCQ +2 marks -0.66 marks

A synchronous motor operates at 0.8 p.f. lagging. If the field current of the motor is continuously increased

The power factor decreases upto a certain value of field current and thereafter it increases

The armature current increases upto a certain value of field current and thereafter it decreases

The power factor increases upto a certain value of field current and thereafter it decreases

The armature current decreases upto a certain value of field current and thereafter it increases.

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