Electrical Machines
No load saturation characteristics are plotted between

 no load voltage and field current
 short circuit current and armature current
 short circuit current and field current
 no load voltage and armature current

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Electrical Machines
Skewing of the rotor in a 3 - Φ squirrel cage induction motor reduces

  noise and pullout torque, but increase parasitic and starting torque.
  noise, parasitic torque, starting torque and pull out torque.
  noise and parasitic torque, but increase starting and pull-out torque.
  noise, parasitic and starting torque, but increase pull out torque.

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