Question 228Electricity & Electronics - Assistant Engineer

The correct answer is C) By the use of a squirrel-cage induction winding, also called an amortisseur winding. Synchronous motors are started and brought nearly to synchronous speed by using a squirrel-cage induction winding, also known as an amortisseur winding. This winding allows the motor to start as an induction motor, drawing power from the supply and developing torque to accelerate the rotor to nearly synchronous speed. Once the motor reaches near-synchronous speed, the main synchronous windings can then be connected to the supply to pull the motor into full synchronization. The other options are incorrect because they do not accurately describe how a synchronous motor is started. Compensating windings, starting capacitors, and interpoles are not the primary means used to start a synchronous motor.