Electrical Machines
Voltage regulation can be determined by which of the following?

 Synchronous impedance method.
All of these
 MMf method.
 ZPF method.

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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, inter poles, armature.
  armature resistance, effect of armature reaction.
 armature resistance, effect of armature reaction.

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Electrical Machines
Consider the following statements : Interpoles in dc machines 1. reducearmature reaction effects in the interpolar region 2. have the same dimension as main polls 3. have their windings connected in series with the armature 4. have same number of turns as the armature 5. have the polarity same as that of the main pole ahead in a motor From these, the correct statements are

 1, 3 and 5
 1, 2 and 3
 1 and 3
 1, 2, 3 and 5

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