In a relation to the synchronous machines, which of the following statement is false

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