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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 | |
A. | increases continuously. [Wrong Answer] |
B. | first increases and then decreases steeply. [Correct Answer] |
C. | first decreases and then increases steeply. [Wrong Answer] |
D. | remains constant. [Wrong Answer] |