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Electrical Machines

Electrical Machines
A 4-pole generator with 16 coil has a two layer lap winding. The pole pitch is

 32.
 16.
 8.
  4.

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Electrical Machines
Inter pole winding is connected in-------------------------- ?

 parallel with armature
 parallel with main poles
 series with main poles
 series with armature

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Electrical Machines
The slip of an induction motor during DC rheostatic braking is

 1 - s.
  s.
  2 - s.
 2 + s.

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Electrical Machines
The output power of any electrical motor is taken from the

 Motor frame.
 Armature.
 Coupling mounted on the shaft.
 Field.

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Electrical Machines
What will be the eddy current loss if the supply frequency of a transformer becomes double?

 Four times.
 Remains same.
 Eight times.
 Doubled.

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Electrical Machines
What is the function of inter pole in DC generator?

 To get a superior commutation.
 To serve the economical aspects.
 To neutralize the distortion of main field flux due to armature reaction.
  Both option B and C.

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