Starting method of 1 phase I.M. Split phase starting Shaded pole starting types of 1 phase I.M. Resistor split phase motor capacitor spit phase motor Resistor split phase motors have poor starting torque capacitor split phase motor, capacitor connect series with auxiliary winding make angle 90˚ result in optimum starting torque.
due to fractional pitch EMF can be approximately made into sine wave losses due to harmonics reduced saving in conductor material mechanical strength of coil is increased.
Skin Effect: tendency of the current to crowd near the conductor surface.
Skin effect is proportional to frequency, conductor diameter and permiability. Skin effect increases effective resistance of conductor. In DC, no skin effect.
EXAMIANS