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 /R loss may be neglected. At a slip s= 0.06, what is the power input to the machine ?

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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, I10-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 R loss may be
neglected.
At a slip s = 0.06, what is the power input to the machine ?
(Electrical Machines-III, Indore Univ. July 1977)
Transcribed Image Text: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, I10-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 R loss may be neglected. At a slip s = 0.06, what is the power input to the machine ? (Electrical Machines-III, Indore Univ. July 1977)
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