Synchronous Motors The rotor copper losses, in a synchronous motor, are met by supply lines motor input c. source armature input supply lines motor input c. source armature input ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The efficiency of a properly designed synchronous motor will usually fall in range 85 to 95% 75 to 80% 60 to 70% 99 to 99.5% 85 to 95% 75 to 80% 60 to 70% 99 to 99.5% ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor is generally ______ times its full-load torque. 0.5 6 to 9 1.25 to 3.5 5 to 10 0.5 6 to 9 1.25 to 3.5 5 to 10 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When load on a synchronous motor is increased, its armature current is increased provided, it is ______ Under-excited Normally excited All of these Over-excited Under-excited Normally excited All of these Over-excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The construction of a synchronous motor resembles an alternator a series motor an induction motor a rotary converter an alternator a series motor an induction motor a rotary converter ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the field of a synchronous motor is under-excited, the power factor will be unity leading zero lagging unity leading zero lagging ANSWER DOWNLOAD EXAMIANS APP
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