What happens to the stator winding of a single-phase motor when voltage is applied?

What happens to the stator winding of a single-phase motor when voltage is applied?

• A. It rotates
• B. It remains stationary
• C. It overheats
• D. It disconnects

Answer: (B)

When voltage is applied to the stator winding of a single-phase motor, the stator does not rotate; instead, it remains stationary. The stator winding creates a magnetic field when energized, but because the motor is single-phase, this field does not create a rotating effect like it would in a three-phase motor. In single-phase motors, the magnetic field produced by the stator is pulsating rather than rotating. This pulsating magnetic field does not exert a continuous rotating force on the rotor. To initiate motion, additional components like a starting mechanism or a capacitor are required to create a rotating magnetic field and produce torque on the rotor. Thus, with just the application of voltage, the stator itself stays stationary and awaits further action to convert electrical energy into mechanical motion.

When voltage is applied to the stator winding of a single-phase motor, the stator does not rotate; instead, it remains stationary. The stator winding creates a magnetic field when energized, but because the motor is single-phase, this field does not create a rotating effect like it would in a three-phase motor.

In single-phase motors, the magnetic field produced by the stator is pulsating rather than rotating. This pulsating magnetic field does not exert a continuous rotating force on the rotor. To initiate motion, additional components like a starting mechanism or a capacitor are required to create a rotating magnetic field and produce torque on the rotor. Thus, with just the application of voltage, the stator itself stays stationary and awaits further action to convert electrical energy into mechanical motion.