Electrical Machines
In 3 - Φ induction motor some times copper bars are placed deep in the rotor to

  improve power factor.
  improve efficiency.
  improve starting torque.
  reduce copper loss.

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Electrical Machines
For a single phase capacitor start induction motor which of the following is valid?

 Rotation can be changed by interchanging supply terminals.
 Direction of rotation cannot be changed.
  Rotation can be changed by reversing main winding terminals.
 None of these.

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