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.
Ns = 120f/P
Ns = 1000 and Nr = 960
from equation of slip, S = (1000-960)/1000
S = 0.04 or 4%
In all machine stator and rotor magnetic field rotates (stationary with respect to each other) at synchronous speed with respect to stationary observer.