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
DC Motor

  dc series motor.
  dc shunt motor with field weakening.
  dc shunt with armature resistance control.
  dc compound motor.

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