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 Which of the following motors is non self starting? Dc series motor Wound rotor induction motor Synchronous motor Squirrel cage induction motor Dc series motor Wound rotor induction motor Synchronous motor Squirrel cage induction motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can develop synchronous torque below or above synchronous speed when under loaded while over-excited only at synchronous speed below or above synchronous speed when under loaded while over-excited only at synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The minimum armature current of the synchronous motor corresponds to operation at zero power factor leading 0.707 power factor lagging unity power factor 0.707 power factor leading zero power factor leading 0.707 power factor lagging unity power factor 0.707 power factor leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Mostly, synchronous motors are of Alternator type machines Salient pole type machines Induction type machines Smooth cylindrical type machines Alternator type machines Salient pole type machines Induction type machines Smooth cylindrical type machines ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is ______ stator voltage. Directly proportional to Independent of Invesely proportional to Directly proportional to square of Directly proportional to Independent of Invesely proportional to Directly proportional to square of ANSWER DOWNLOAD EXAMIANS APP
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