Electrical Machines
Which of the following motor has negative speed regulation?

 Differential compound motor
 Series motor
 Shunt motor
 Cumulative compound motors

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Electrical Machines
The synchronous reactance( Xs) is the

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

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