Electrical Machines
If in a sub – station there is one 132 / 33 kV transformer whose secondary is connected with primary of one 33 / 11 kV transformer, the total transformation ratio of the sub – station will be,

 7.
  12.
 4.
 3.

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Electrical Machines
In a 3 - Φ induction motor

  power factor at starting is low as compared to that while running.
  none of them.
  power factor at starting is high as compared to that while running.
  power factor at starting in the same as that while running.

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