Electrical Machines
If the excitation of the synchronous generator fails, it acts as a/an

  induction generator.
 induction motor.
 synchronous generator.
 synchronous motor.

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Electrical Machines
The synchronous reactance( Xs) is the

 reactance due to leakage flux
 combined reactance due to armature reaction and leakage flux
 reactance due to armature reaction of the machine
 reactance either due to armature reaction or leakage flux

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