Electrical Machines
Ward Leonard control provides speed control

 above rated speed.
 in one direction only.
 in both direction.
 below rated speed.

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Electrical Machines
The synchronous reactance( Xs) is the

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

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