Electrical Machines
In double cage induction motor, the outer cage offers

  low resistance and high reactance.
  low resistance and low reactance.
  high resistance and low reactance.
  high resistance and high reactance.

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Electrical Machines
An ideal synchronous motor has no starting torque because

 rotor winding is highly reactive.
 rotor is made up of salient poles.
  relative velocity between stator and rotor mmf’s is not zero.
 relative velocity between the stator and rotor mmf’s is zero.

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