The net armature voltage of a synchronous motor is equal to the

Related MCQs

• A synchronous motor installed at the receiving end substation operates with such an excitation that it takes power at lagging power factor. Now if the applied voltage of the synchronous motor goes down, the power factor of the synchronous motor will
• In a synchronous motor it the back e.m.f. generated in the armature at noload is approximately equal to the applied voltage, then
• As the load is applied to a synchronous motor, the motor takes more armature current because
• The minimum armature current of the synchronous motor corresponds to operation at
• When load on an over-excited or under excited synchronous*motor is increased, rate of change of its armature current as compared with that of power factor is
• The armature current of the synchronous motor has higher values for
• If excitation of a synchronous motor running with a constant load is decreased from its normal value, ignoring effects of armature reaction, it leads to
• A synchronous motor is running with normal excitation. When the load is increased, the armature current drawn by it increases because
• 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
• In a synchronous motor, the armature current has large values for