Synchronous Motors The efficiency of a properly designed synchronous motor will usually fall in range 75 to 80% 99 to 99.5% 60 to 70% 85 to 95% 75 to 80% 99 to 99.5% 60 to 70% 85 to 95% ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor is cheaper than 3-phase induction motor for _____ High speed, high output None of the listed here High speed, low output Low speed, high output High speed, high output None of the listed here High speed, low output Low speed, high output ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An under excited synchronous motor behaves as_______ A resistor An inductor None of the listed here A capacitor A resistor An inductor None of the listed here A capacitor ANSWER DOWNLOAD EXAMIANS APP
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 Less than rated horsepower output None of the listed here More than rated horseppwer output More than rated rotor current Less than rated horsepower output None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An over excited synchronous motor is used for Variable speed loads Fluctuating loads Low torque loads Power factor corrections Variable speed loads Fluctuating loads Low torque loads Power factor corrections ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When pull-out torque occurs in a synchronous motor, the poles of the rotor are _______ None of the listed here Coincident with statorbpoles 45° (electrical) behind stator poles Mid way between N and S poles of stator None of the listed here Coincident with statorbpoles 45° (electrical) behind stator poles Mid way between N and S poles of stator ANSWER DOWNLOAD EXAMIANS APP
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