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In relation to the synchronous machines, which on of the following statements is false ? 

(A) In salient pole machines, the direct-axis synchronous reactance is greater than the quadrature-axis synchronous reactance. (B) The damper bars help the synchronous motor self start. (C) Short circuit ratio is the ratio of the field current required to produces the rated voltage on open circuit to the rated armature current. (D) The V-cure of a synchronous motor represents the variation in the armature current with field excitation, at a given output power.

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In relation to the synchronous machines, which on of the following statements is false ? 

(A) In salient pole machines, the direct-axis synchronous reactance is greater than the quadrature-axis synchronous reactance. (B) The damper bars help the synchronous motor self start. (C) Short circuit ratio is the ratio of the field current required to produces the rated voltage on open circuit to the rated armature current. (D) The V-cure of a synchronous motor represents the variation in the armature current with field excitation, at a given output power.

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