As these rotor windings or bars rotate within the magnetic field created by the stator magnetizing currents, voltages are induced in them. If the rotor is in standstill, then the induced voltages would be very similar to those induced in the stator windings-　　　As these rotor windings or bars rotate within the magnetic field created by the stator magnetizing currents, voltages are induced in them. If the rotor is in standstill, then the induced voltages would be very similar to those induced in the stator windings