Synchronous Motors The shaft of synchronous motor is made of Alcino Chrome steel Stainless steel Mild steel Alcino Chrome steel Stainless steel Mild steel ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous machine with low value of short-circuit ratio has lower stability limit high stability limit good speed regulation good voltage regulation lower stability limit high stability limit good speed regulation good voltage regulation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors 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 no change of power factor leading power factor with under-excitation leading power factor with over-excitation lagging power factor with over-excitation no change of power factor leading power factor with under-excitation leading power factor with over-excitation lagging power factor with over-excitation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor of synchronous motor is excited with direct current when the motor _____ Approches synchronous speed None of the listed here Is at standstill Approches half synchronous speed Approches synchronous speed None of the listed here Is at standstill Approches half synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors While running, a synchronous motor is compelled to run at synchronous speed because of _______ Damper winding in its pole faces Magnetic locking between stator and rotor poles Compulsion due to lenz's law Induced emf in rotor field winding by stator flux Damper winding in its pole faces Magnetic locking between stator and rotor poles Compulsion due to lenz's law Induced emf in rotor field winding by stator flux ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Most of the synchronous motors are _______ power factor metors. 0.5 leading 0.8 lagging 0.8 leading Unity 0.5 leading 0.8 lagging 0.8 leading Unity ANSWER DOWNLOAD EXAMIANS APP
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