Alternating current motors

[Vimalab]

what is the difference between synchronous and asynchronous motor?

 

[chuckey]

Synchronous motors lock up to the mains frequency and can only run at one speed. Asynchronous motors run at a speed determined by the load on them. Have you looked at Wikipedia?
Frank

 

[Venkadesh_M]

synchronous motor - catches ans runs in rmf
asynchronous motor - runs lesser than rmf

speed of rmf = 120 * f / p

f is frequency p is poles