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Electrical Machines

Electrical Machines
From no load to full load the slip will

 slightly decrease.
 not change.
 slightly increase.
None of these

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Electrical Machines
Armature reaction depends on which of the following?

None of these
 power factor of load
 both 1 and 2
 magnitude of load current

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Electrical Machines
The ___________________ generator has the poorest voltage regulation.

  over compounded.
  under-compounded.
  shunt.
  differential compounded.

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Electrical Machines
In a 3 - φ induction motor running at full load which of these parameters is stationary with respect to the stator mmf wave?

  Rotor mmf wave.
  Both rotor and stator winding.
  Stator winding.
  Rotor winding.

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Electrical Machines
For high current and low current rating which winding is employed to DC machine?

 Lap winding
 Both lap and wave winding
 None of above
 Wave winding

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Electrical Machines
The voltmeter connected across a generator reads voltage same at no load and at full load (rated). The generator is of the type

  short - shunt generator.
  level compound.
 series generator.
  shunt generator.

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