Electrical Machines
In auto transformer if the turn ratio is K, what is the power transferred inductively?

 (1-K) × input power
 both A and B
 K × input power
None of these

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

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Electrical Machines
For a given torque, reducing divertor resistance of a DC series motor

  Increase in speed demanding more armature current.
  Decrease in speed but armature current remains the same.
  Decrease in speed demanding less armature current.
  Increase in speed but armature currnet remains the same.

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Electrical Machines
Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW

 any of the above
 33.33 MW and 66.67 MW respectively
 50 MW and 50 MW respectively
 66.67 MW and 33.33 MW respectively

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