For a single phase induction motor you can start if there is

For a single phase induction motor you can start if there is a capacitor in series with one winding you can start if there is a High R and low I on one winding and low R and High L on the other you do not need a start coil if you can get it up to speed all of the above

Solution

by improving power factor we can start the single phase induction motor. because it is not a self stating machine. so its starting torque is zero but it having running torque once it is started and and rotates in a certain direction.

a)

so when capacitor is connected in series the power factor is improved and and motor gains a starting torque and rotates in a particular direction corresponding to the torque developed.

b)

when we are introducing two windings the starting torque developes and rotates.

c)

we do not need a start coil once we get it up to speed. because single phase motor can develope running torque by its own.