Electrical Machines
In an alternator, voltage drops occurs in

  armature resistance, leakage reactance, armature reaction and earth connection.
  armature resistance only.
  armature resistance, leakage reactance and armature reaction.
  armature resistance and leakage reactance.

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Electrical Machines
Which of the following represents the commutator pitch?

 Number of conductors spanned by one coil at the front end of the armature.
 Number of commutator segments between two successive coils.
 The distance between the staring of first coil and its next successive coil
 Number of conductors spanned by one coil at the back end of the armature.

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