Synchronous Motors When a unity pf synchronous motor is operated at a leading pf, it results in _______ More than rated horseppwer output More than rated rotor current None of the listed here Less than rated horsepower output More than rated horseppwer output More than rated rotor current None of the listed here Less than rated horsepower output ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor of synchronous motor is excited with direct current when the motor _____ Approches half synchronous speed Is at standstill None of the listed here Approches synchronous speed Approches half synchronous speed Is at standstill None of the listed here Approches synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the synchronous motor runs at synchronous speed, the voltage induced in the damper winding is _____ Zero None of the listed here minimum Maximum Zero None of the listed here minimum Maximum ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed of a synchronous motor can be changed by varying _______ Supply frequency Field excitation None of the listed here Mechanical load Supply frequency Field excitation None of the listed here Mechanical load ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If a synchronous motor is operating at a supply frequency of 50 cycles/second, then, rotor revolves at ______ 50 cycles/second None of the listed here 25 cycles/ second 100 cycles/second 50 cycles/second None of the listed here 25 cycles/ second 100 cycles/second ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS