V and Inverted V curves of Synchronous Motor
A synchronous motor is a useful industrial machine on account of which of the following reasons? I. It improves the power factor of the complete installation II. Its speed is constant at all loads, provided mains frequency remains constant III. It can always be adjusted to operate at unity power factor for optimum efficiency and economy.
In a synchronous motor if the back emf generated in the armature at no load is approximately equal to the applied voltage, then
A synchronous motor working on leading power factor and not driving any mechanical, is known
The constant speed of a synchronous motor can be changed to new fixed value by
A synchronous machine has its field winding on the stator and armature winding on the rotor. Under steady running conditions, the air-gap field