Synchronous Motors When the synchronous motor runs at synchronous speed, the voltage induced in the damper winding is _____ None of the listed here Zero minimum Maximum None of the listed here Zero minimum Maximum ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor runs at speed ranging from ______ 150 to 1800 rpm 1800 to 3600 rpm 3600 to 6000 rpm None of the listed here 150 to 1800 rpm 1800 to 3600 rpm 3600 to 6000 rpm None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the magnitude of stator back emf depends on _____ Speed of the rotor Load on the motor Dc excitation only Both the speed and rotor flux Speed of the rotor Load on the motor Dc excitation only Both the speed and rotor flux ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An over excited synchronous motor behaves as _____ None of the listed here A resistor A capacitor An inductor None of the listed here A resistor A capacitor An inductor 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 over-excitation leading power factor with under-excitation lagging power factor with over-excitation no change of power factor leading power factor with over-excitation leading power factor with under-excitation lagging power factor with over-excitation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors While starting a salient pole synchronous motor by induction motor action and connecting field discharge resistance across field, starting and accelerting torque is produced by induction motor torque in field winding induction motor torque in damper winding eddy current and hysteresis torque in pole faces All of the listed here induction motor torque in field winding induction motor torque in damper winding eddy current and hysteresis torque in pole faces All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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