Synchronous Motors As the load is applied to a synchronous motor, the motor takes more armature current because The back e.m.f. decreases causing an increase in motor current The rotor strengthens the rotating field causing more motor current The rotor by shifting its phase backward causes motor to take more current The increased load has to take more current The back e.m.f. decreases causing an increase in motor current The rotor strengthens the rotating field causing more motor current The rotor by shifting its phase backward causes motor to take more current The increased load has to take more current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Synchronous capacitor is None of the listed here An over excited synchronous motor driving mechanical load An ordinary static capacitor bank An over excited synchronous motor running without mechanical load None of the listed here An over excited synchronous motor driving mechanical load An ordinary static capacitor bank An over excited synchronous motor running without mechanical load ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Leading power factor synchronous motors cost ______ the unity pf motors. Less than About the same as More than None of the listed here Less than About the same as More than None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The shaft of synchronous motor is made of Stainless steel Mild steel Alcino Chrome steel Stainless steel Mild steel Alcino Chrome steel ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors For the same active power consumed, the stator current of a synchronous motor is ______ that of a 3 phase induction motor. More than Less than The same as None of the listed here More than Less than The same as None of the listed here 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 lagging power factor with over-excitation leading power factor with over-excitation leading power factor with under-excitation no change of power factor lagging power factor with over-excitation leading power factor with over-excitation leading power factor with under-excitation ANSWER DOWNLOAD EXAMIANS APP
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