Synchronous Motors The magnitude of field flux in a 3-phase synchronous motor Varies with the load Varies with speed Remains constant at all loads Varies with power factor Varies with the load Varies with speed Remains constant at all loads Varies with power factor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Which of the following motors is non self starting? Synchronous motor Dc series motor Squirrel cage induction motor Wound rotor induction motor Synchronous motor Dc series motor Squirrel cage induction motor Wound rotor induction motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor is cheaper than 3-phase induction motor for _____ High speed, low output None of the listed here High speed, high output Low speed, high output High speed, low output None of the listed here High speed, high output Low speed, high output ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. None of the listed here Increase Remain unchanged Decrease None of the listed here Increase Remain unchanged Decrease ANSWER DOWNLOAD EXAMIANS APP
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 by shifting its phase backward causes motor to take more current The rotor strengthens the rotating field causing more motor current The increased load has to take more current The back e.m.f. decreases causing an increase in motor current The rotor by shifting its phase backward causes motor to take more current The rotor strengthens the rotating field causing more motor current The increased load has to take more current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the synchronous motor runs at synchronous speed, the voltage induced in the damper winding is _____ None of the listed here Maximum minimum Zero None of the listed here Maximum minimum Zero ANSWER DOWNLOAD EXAMIANS APP
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