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Q#1 Synchronous Machines GATE EE 2011 MCQ +1 mark -0.33 marks

A three-phase, salient pole synchronous motor is connected to an infinite bus. It is operated at no load at normal excitation. The field excitation of the motor is first reduced to zero and then increased in the reverse direction gradually. Then the armature current

Increase continuously

First increases and then decreases steeply

First decreases and then increases steeply

Remains constant

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