Autotransformer starter working, wiring and control diagram:  There are various  starter used to start induction motor like Direct online starter, Soft starter,star delta starter,auto transformer starter,auto transformer starter is used for large HP motor. Auto transformer control diagram :–Fig:auto transformer motor starter control...

why single-phase induction motor is not self-starting?A single phase induction motor is very similar to a 3-phase squirrel cage induction motorIt has(i)  a squirrel-cage rotor as to a 3-phase motor and(ii)  a single-phase winding on the stator Unlike a 3-phase induction motor,a single-phase induction motor is not self-starting but requires...