Synchronous Motors Hunting in a synchronous motor cannot be due to windage friction variable load variable frequency variable supply voltage windage friction variable load variable frequency variable supply voltage ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The magnitude of field flux in a 3-phase synchronous motor Varies with speed Remains constant at all loads Varies with the load Varies with power factor Varies with speed Remains constant at all loads Varies with the load Varies with power factor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is on no load, the torque angle is about ________ 90° electrical 45° electrical 0° electrical 30° electrical 90° electrical 45° electrical 0° electrical 30° electrical ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Change of D.C. excitation of a synchronous motor changes Power factor of power drawn by the motor Motor speed Any of the above Applied voltage of the motor Power factor of power drawn by the motor Motor speed Any of the above Applied voltage of the motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor runs at speed ranging from ______ None of the listed here 1800 to 3600 rpm 3600 to 6000 rpm 150 to 1800 rpm None of the listed here 1800 to 3600 rpm 3600 to 6000 rpm 150 to 1800 rpm ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The induced e.m.f. in a synchronous motor working on leading power factor will be None of these equal to the supply voltage less than the supply voltage more than the supply voltage None of these equal to the supply voltage less than the supply voltage more than the supply voltage ANSWER DOWNLOAD EXAMIANS APP
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