The ball bearings in the motor probably need to be changed. If the motor does not have ball bearings then the bushings have worn out and the motor armature is dragging on the stator. Don't run this motor until the bearing have been repaired as excessive wear on the stator from armature rubbing will introduce metal filings into the stator windings which could short out and destroy the motor.
If it's the normal operating noise that you're asking about, a three phase motor has a smoothly spinning magnetic field driving it's rotor that has almost no uneven motion, and produces almost no vibration in the iron parts of the machine. A single phase motor runs with a pulsating field that swaps polarity twice per cycle, but DOESN'T actually rotate. This causes the iron in the motor to vibrate slightly whenever the AC is applied, and this vibration causes the noisier operation of a single phase motor compared to a three phase motor.
Single phase motor running noise can be reduced if the start winding li left partly energised during normal running. For instance, some room air conditioners leave a small capacitor connecting the starting winding so it delivers partial power during running to give a 'sort-of' rotating field in the single phase compressor motor, which helps to reduce the 'pulsating' component and enhance it with a 'rotating' field that quietens the compressor down while you're trying to sleep.....
The most likely reason is misalignment between the motor and its load.
Usually a bad bearing.
Split Phase Induction Motor.
capacitive start motors start by themselves however a normal single phase induction motor requires a starter motor to 'kick-start' the motor into action.
anticlockwise
Could be a single phase induction motor of 20-40 watts.
No, commutator motors as used in vaccum cleaners for example do not use a starting winding. Single-phase induction motors need a starting winding without which they will start in either direction if given an initial twist.
how reversing an ac single phase induction motor to wark as induction generator
Single phase Induction motor
revolving field theory of single phase induction motor
The single phase induction motors are made self starting by providing an additional flux by some additional means. Now depending upon these additional means the single phase induction motors are classified as: 1.Split phase induction motor. 2.Capacitor start inductor motor. 3.Capacitor start capacitor run induction motor. 4. Shaded pole induction motor.
Split Phase Induction Motor.
capacitive start motors start by themselves however a normal single phase induction motor requires a starter motor to 'kick-start' the motor into action.
You would use a single-phase induction motor if the available electric power supply is a single-phase one. That applies to the average house or small business.
single-phase induction motor is used in ceiling fan.
Single phase induction motor is used in grinder.
anticlockwise
the torque requirement of single phase induction motor is less,and it is use for low power applications upto 1 to 10 kw.like in fans,mixiers
Could be a single phase induction motor of 20-40 watts.