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

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

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Electrical Machines
In a DC shunt generator working on load, the brushes are moved forward in the direction of rotation, as a result of this, commutation will

 improve but terminal voltage will fall.
  worsen and terminal voltage will rise.
  worsen and terminal voltage will fall
  improve and terminal voltage will rise .

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