91.
In a synchronous motor it the back e.m.f. generated in the armature at noload is approximately equal to the applied voltage, then

93.
A synchronous motor connected to infinite bus-bars has at constant full load, 100% excitation and unity power factor. On changing the excitation only, the armature current will have

94.
The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as

Read More Section(Synchronous Motors)

Each Section contains maximum 100 MCQs question on Synchronous Motors. To get more questions visit other sections.