Explain how the pulsating mmf of a singlephase induction mot

Explain how the pulsating mmf of a single-phase induction motor may be considered equivalent to two oppositely-rotating fields. Develop an expression for the torque of the motor. A 125-W, 4-pole, 110-V, 50-Hz single-phase induction motor has the no-load rotational loss of 25 watts and total rotor copper loss at rated load of 25 watts at a slip of 0.06. The rotor I2R loss may be neglected. At a slip s = 0.06, what is the power input to the machine ?

Solution

w=15W

p=4

v=110v

f=50hz

s=0.06