Synchronous Motors If one phase of a 3 phase synchronous motor is short circuited, motor Will fail to pull into step Will refused ro start Will not come upto speed Will overheat in spots Will fail to pull into step Will refused ro start Will not come upto speed Will overheat in spots ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of a synchronous motor will be minimum for ______ power factor. 0.8 leading None of the listed here Unity 0.8 lagging 0.8 leading None of the listed here Unity 0.8 lagging ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Synchronous motor always run at Less than synchronous speed None of the listed here The synchronous speed More than synchronous speed Less than synchronous speed None of the listed here The synchronous speed More than synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The back emf in the stator of a synchronous motor depends on None of the listed here Rotor excitation Flux density Rotor speed None of the listed here Rotor excitation Flux density Rotor speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ Interchange any two stator lines Reduce dc field excitation to zero Change supply frequency None of the listed here Interchange any two stator lines Reduce dc field excitation to zero Change supply frequency None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An over excited synchronous motor behaves as _____ An inductor None of the listed here A capacitor A resistor An inductor None of the listed here A capacitor A resistor ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS