In single-phase induction motors, relays serve the purpose of starting and protecting windings.
Both the voltage starting relay and the hot wire relay are types of starting relays that connect in series with the running winding.
These relays monitor the motor's operational state and facilitate the disconnection of the starting winding once the motor achieves the necessary speed.
The voltage starting relay operates in response to the back EMF produced in the running winding.
The hot wire relay utilizes the heat generated by current to activate a bimetal strip or wire.
The current starting relay is typically connected in series with the starting winding, not the running winding.
Consequently, both (A) and (B) are accurate.