For a 400 V, 3 phase alternator gives an open circuit voltage of 380V and armature current of 38A at a field current of 20A. Then the synchronous reactance of the machine is?

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Synchronous Machines topics include: Physical concepts, Emf Polygons, power angle and power factor control of synchronous machines, excitation systems for synchronous machines, flux and mmf phasors in synchronous machines,synchronous machine applications and measurement of xd and xq. A synchronous machine is an electrical machine that operates at synchronous speed. It is an AC machine that uses a rotating magnetic field to generate power.  Here are some characteristics of synchronous machines: Rotation speed: The rotor of a synchronous machine rotates at the same speed as the rotating... Show more

For a 400 V, 3 phase alternator gives an open circuit voltage of 380V and armature current of 38A at a field current of 20A. Then the synchronous reactance of the machine is?