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Electrical Machines

Electrical Machines
Swinburne test is conducted under which of the following condition?

 any of the above
 half load
 full load
 no load

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Electrical Machines
Compensating windings is placed in which part of a D.C motor?

  On yoke in the pole faces.
 On armature.
 On yoke in the inter pole gap.
None of these

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Electrical Machines
The slip of an induction motor normally does not depend on which of the following?

  Core loss component.
 Rotor speed.
 Synchronous speed.
 Shaft torque.

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Electrical Machines
For a fault at the terminal of a synchronous generator, the fault current is maximum for a

 3 - phase to ground fault.
 3 - phase fault.
  line to ground fault.
 line to line fault.

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Electrical Machines
Damper winding is used to

 both 1 and 2.
 suppress the hunting.
 increase the load current.
 decrease the load current.

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Electrical Machines
The output power of a dc motor is given by

  EbIa.
  EbIa2.
  none of these.
  EIa.

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