Synchronous Motors In a synchronous motor, the rotor copper loss are met by ______ Armature input Motor input Supply lines Dc source Armature input Motor input Supply lines Dc source ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If a synchronous motor is operating at a supply frequency of 50 cycles/second, then, rotor revolves at ______ None of the listed here 25 cycles/ second 50 cycles/second 100 cycles/second None of the listed here 25 cycles/ second 50 cycles/second 100 cycles/second ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor runs at only one speed because it ______ Has no losses Has a damper winding Is a doubly fed machine None of the listed here Has no losses Has a damper winding Is a doubly fed machine None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When load on an over-excited or under excited synchronous motor is increased, rate of change of its armature current as compared with that of power factor is equal twice less more equal twice less more ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The ratio of starting torque to running torque in a synchronous motor is Zero One Two Infinity Zero One Two Infinity ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. Decrease None of the listed here Remain unchanged Increase Decrease None of the listed here Remain unchanged Increase ANSWER DOWNLOAD EXAMIANS APP
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