Electrical Machines
Which of the following DC motors has got maximum relieving property?

 Differentical compound.
  Series.
 Cummulative compound.
 Shunt.

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Electrical Machines
In a step down transformer which one of the following statements is true?

 Secondary power is less than primary power.
 Secondary current is less than primary current.
 Number of secondary turns is more than that of primary.
  Number of secondary turns is less than primary turns.

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Electrical Machines
For a single phase capacitor start induction motor which of the following is valid?

 None of these.
 Direction of rotation cannot be changed.
 Rotation can be changed by interchanging supply terminals.
  Rotation can be changed by reversing main winding terminals.

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Electrical Machines
The factors that are responsible for decrease in terminal voltage of a shunt generator are

  reduction in field current, effect of armature reaction, armature.
 armature resistance, effect of armature reaction.
  armature resistance, effect of armature reaction.
 armature resistance, inter poles, armature.

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