How should its field winding be while starting a synchronous motor?

The correct answer to this question is B, short circuited. The short circuit allows the l. motor to be started. The synchronous motor is an AC motor, which is synchronized the a supply current's frequency. There are various types of synchronous motors, including reluctance motors, permanent-magnet motors, and DC excited motors.

The speed of these motors is measure in revolutions per minute, by using the formula Ns = 60 f/p = 120 f/p.These motors are the most used in the AC motors. Synchronous motors can be found in a number of devices such as steppers, robots, turntables, and ball mills.