Synchronous Motors The size of a synchronous motor decreases with the increase in Horse power rating Speed Flux density All of the listed here Horse power rating Speed Flux density All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Damper winding in a synchronous motor________ Increases hunting of the motor Reduces windage losses Serves to start the motor Improve pf of the motor Increases hunting of the motor Reduces windage losses Serves to start the motor Improve pf of the motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. Remain unchanged None of the listed here Decrease Increase Remain unchanged None of the listed here Decrease Increase 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 less equal twice more less equal twice more ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as None of these pull-up torque pull-out torque pull-in torque None of these pull-up torque pull-out torque pull-in torque ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ Reduce dc field excitation to zero None of the listed here Change supply frequency Interchange any two stator lines Reduce dc field excitation to zero None of the listed here Change supply frequency Interchange any two stator lines ANSWER DOWNLOAD EXAMIANS APP
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