Synchronous Motors The back e.m.f. of a synchronous motor depends on speed load All of these load angle speed load All of these load angle ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Most of the synchronous motors are _______ power factor metors. 0.5 leading 0.8 lagging Unity 0.8 leading 0.5 leading 0.8 lagging Unity 0.8 leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If the field of a synchronous motor is underexcited, the power factor will be lagging leading zero unity lagging leading zero unity ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor copper losses, in a synchronous motor, are met by motor input armature input supply lines c. source motor input armature input supply lines c. source ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Slip rings in a synchronous motor carry All of the listed here No current Alternating current Direct current All of the listed here No current Alternating current Direct current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The direction of rotation of a synchronous motor can be reversed by reversing, None of the listed here Polarity of rotor poles Supply phase sequence Current to field winding None of the listed here Polarity of rotor poles Supply phase sequence Current to field winding ANSWER DOWNLOAD EXAMIANS APP